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    T113-s3 CAN linux 下已调通

    创龙科技专区
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    • L
      liukia LV 3 last edited by whycan

      看到有朋友裸板调通T113-s3的CAN, 我以调通linux 下的CAN驱动,与君共享

      dtsi 中加入

      can0: can@02504000 {
      			compatible = "allwinner,sunxi-t113-can";
      			reg = <0x0 0x02504000 0x0 0x400>;
      			interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>;// 21+32 =53
      			clocks = <&ccu CLK_BUS_CAN0>;
      			clock-names = "can0";
      			resets = <&ccu RST_BUS_CAN0>;
      			status = "disabled";
      		};
      		can1: can@02504400 {
      			compatible = "allwinner,sunxi-t113-can";
      			reg = <0x0 0x02504400 0x0 0x400>;
      			interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>;// 22+32 =54
      			clocks = <&ccu CLK_BUS_CAN1>;
      			clock-names = "can1";
      			resets = <&ccu RST_BUS_CAN1>;
      			status = "disabled";
      		};
      

      dts 中 加入

      can0_pins_a: can0_pins@0 {
      		pins = "PB2", "PB3";
      		function = "can0";
      		drive-strength = <10>;
      		bias-pull-up;
      	};
      	can0_pins_b: can0_pins@1 {
      		pins = "PB2", "PB3";
      		function = "gpio_in";
      			};
      
      	can1_pins_a: can1_pins@0 {
      		pins = "PB4", "PB5";
      		function = "can1";
      		drive-strength = <10>;
      		bias-pull-up;
      	};		
      	can1_pins_b: can1_pins@1 {
      		pins = "PB4", "PB5";
      		function = "gpio_in";
      			};
      

      。。

      &can0 {
      	pinctrl-names = "default";
      	pinctrl-0 = <&can0_pins_a>;
      	pinctrl-1 = <&can0_pins_b>;
      	status = "okay";
      };
      
      &can1 {
      	pinctrl-names = "default";
      	pinctrl-0 = <&can1_pins_a>;
      	pinctrl-1 = <&can1_pins_b>;
      	status = "okay";
      };
      

      驱动文件 放入 drivers/net/can/sun4i_can.c 这个文件是我改的

      /*
       * sun4i_can.c - CAN bus controller driver for Allwinner SUN4I&SUN7I based SoCs
       *
       * Copyright (C) 2013 Peter Chen
       * Copyright (C) 2015 Gerhard Bertelsmann
       * All rights reserved.
       *
       * Parts of this software are based on (derived from) the SJA1000 code by:
       *   Copyright (C) 2014 Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
       *   Copyright (C) 2007 Wolfgang Grandegger <wg@grandegger.com>
       *   Copyright (C) 2002-2007 Volkswagen Group Electronic Research
       *   Copyright (C) 2003 Matthias Brukner, Trajet Gmbh, Rebenring 33,
       *   38106 Braunschweig, GERMANY
       *
       * Redistribution and use in source and binary forms, with or without
       * modification, are permitted provided that the following conditions
       * are met:
       * 1. Redistributions of source code must retain the above copyright
       *    notice, this list of conditions and the following disclaimer.
       * 2. Redistributions in binary form must reproduce the above copyright
       *    notice, this list of conditions and the following disclaimer in the
       *    documentation and/or other materials provided with the distribution.
       * 3. Neither the name of Volkswagen nor the names of its contributors
       *    may be used to endorse or promote products derived from this software
       *    without specific prior written permission.
       *
       * Alternatively, provided that this notice is retained in full, this
       * software may be distributed under the terms of the GNU General
       * Public License ("GPL") version 2, in which case the provisions of the
       * GPL apply INSTEAD OF those given above.
       *
       * The provided data structures and external interfaces from this code
       * are not restricted to be used by modules with a GPL compatible license.
       *
       * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
       * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
       * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
       * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
       * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
       * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
       * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
       * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
       * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
       * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
       * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
       * DAMAGE.
       *
       */
      
      #include <linux/netdevice.h>
      #include <linux/can.h>
      #include <linux/can/dev.h>
      #include <linux/can/error.h>
      #include <linux/can/led.h>
      #include <linux/clk.h>
      #include <linux/reset.h>
      #include <linux/delay.h>
      #include <linux/interrupt.h>
      #include <linux/init.h>
      #include <linux/io.h>
      #include <linux/module.h>
      #include <linux/of.h>
      #include <linux/of_device.h>
      #include <linux/platform_device.h>
      
      #define DRV_NAME "sunxi_can"
      
      /* Registers address (physical base address 0x01C2BC00) */
      #define SUN4I_REG_MSEL_ADDR	0x0000	/* CAN Mode Select */
      #define SUN4I_REG_CMD_ADDR	0x0004	/* CAN Command */
      #define SUN4I_REG_STA_ADDR	0x0008	/* CAN Status */
      #define SUN4I_REG_INT_ADDR	0x000c	/* CAN Interrupt Flag */
      #define SUN4I_REG_INTEN_ADDR	0x0010	/* CAN Interrupt Enable */
      #define SUN4I_REG_BTIME_ADDR	0x0014	/* CAN Bus Timing 0 */
      #define SUN4I_REG_TEWL_ADDR	0x0018	/* CAN Tx Error Warning Limit */
      #define SUN4I_REG_ERRC_ADDR	0x001c	/* CAN Error Counter */
      #define SUN4I_REG_RMCNT_ADDR	0x0020	/* CAN Receive Message Counter */
      #define SUN4I_REG_RBUFSA_ADDR	0x0024	/* CAN Receive Buffer Start Address */
      #define SUN4I_REG_BUF0_ADDR	0x0040	/* CAN Tx/Rx Buffer 0 */
      #define SUN4I_REG_BUF1_ADDR	0x0044	/* CAN Tx/Rx Buffer 1 */
      #define SUN4I_REG_BUF2_ADDR	0x0048	/* CAN Tx/Rx Buffer 2 */
      #define SUN4I_REG_BUF3_ADDR	0x004c	/* CAN Tx/Rx Buffer 3 */
      #define SUN4I_REG_BUF4_ADDR	0x0050	/* CAN Tx/Rx Buffer 4 */
      #define SUN4I_REG_BUF5_ADDR	0x0054	/* CAN Tx/Rx Buffer 5 */
      #define SUN4I_REG_BUF6_ADDR	0x0058	/* CAN Tx/Rx Buffer 6 */
      #define SUN4I_REG_BUF7_ADDR	0x005c	/* CAN Tx/Rx Buffer 7 */
      #define SUN4I_REG_BUF8_ADDR	0x0060	/* CAN Tx/Rx Buffer 8 */
      #define SUN4I_REG_BUF9_ADDR	0x0064	/* CAN Tx/Rx Buffer 9 */
      #define SUN4I_REG_BUF10_ADDR	0x0068	/* CAN Tx/Rx Buffer 10 */
      #define SUN4I_REG_BUF11_ADDR	0x006c	/* CAN Tx/Rx Buffer 11 */
      #define SUN4I_REG_BUF12_ADDR	0x0070	/* CAN Tx/Rx Buffer 12 */
      #define SUN4I_REG_ACPC_ADDR	0x0028	/* CAN Acceptance Code 0 */
      #define SUN4I_REG_ACPM_ADDR	0x002c	/* CAN Acceptance Mask 0 */
      #define SUN4I_REG_RBUF_RBACK_START_ADDR	0x0180	/* CAN transmit buffer start */
      #define SUN4I_REG_RBUF_RBACK_END_ADDR	0x01b0	/* CAN transmit buffer end */
      
      /* Controller Register Description */
      
      /* mode select register (r/w)
       * offset:0x0000 default:0x0000_0001
       */
      #define SUN4I_MSEL_SLEEP_MODE		(0x01 << 4) /* write in reset mode */
      #define SUN4I_MSEL_WAKE_UP		(0x00 << 4)
      #define SUN4I_MSEL_SINGLE_FILTER	(0x01 << 3) /* write in reset mode */
      #define SUN4I_MSEL_DUAL_FILTERS		(0x00 << 3)
      #define SUN4I_MSEL_LOOPBACK_MODE	BIT(2)
      #define SUN4I_MSEL_LISTEN_ONLY_MODE	BIT(1)
      #define SUN4I_MSEL_RESET_MODE		BIT(0)
      
      /* command register (w)
       * offset:0x0004 default:0x0000_0000
       */
      #define SUN4I_CMD_BUS_OFF_REQ	BIT(5)
      #define SUN4I_CMD_SELF_RCV_REQ	BIT(4)
      #define SUN4I_CMD_CLEAR_OR_FLAG	BIT(3)
      #define SUN4I_CMD_RELEASE_RBUF	BIT(2)
      #define SUN4I_CMD_ABORT_REQ	BIT(1)
      #define SUN4I_CMD_TRANS_REQ	BIT(0)
      
      /* status register (r)
       * offset:0x0008 default:0x0000_003c
       */
      #define SUN4I_STA_BIT_ERR	(0x00 << 22)
      #define SUN4I_STA_FORM_ERR	(0x01 << 22)
      #define SUN4I_STA_STUFF_ERR	(0x02 << 22)
      #define SUN4I_STA_OTHER_ERR	(0x03 << 22)
      #define SUN4I_STA_MASK_ERR	(0x03 << 22)
      #define SUN4I_STA_ERR_DIR	BIT(21)
      #define SUN4I_STA_ERR_SEG_CODE	(0x1f << 16)
      #define SUN4I_STA_START		(0x03 << 16)
      #define SUN4I_STA_ID28_21	(0x02 << 16)
      #define SUN4I_STA_ID20_18	(0x06 << 16)
      #define SUN4I_STA_SRTR		(0x04 << 16)
      #define SUN4I_STA_IDE		(0x05 << 16)
      #define SUN4I_STA_ID17_13	(0x07 << 16)
      #define SUN4I_STA_ID12_5	(0x0f << 16)
      #define SUN4I_STA_ID4_0		(0x0e << 16)
      #define SUN4I_STA_RTR		(0x0c << 16)
      #define SUN4I_STA_RB1		(0x0d << 16)
      #define SUN4I_STA_RB0		(0x09 << 16)
      #define SUN4I_STA_DLEN		(0x0b << 16)
      #define SUN4I_STA_DATA_FIELD	(0x0a << 16)
      #define SUN4I_STA_CRC_SEQUENCE	(0x08 << 16)
      #define SUN4I_STA_CRC_DELIMITER	(0x18 << 16)
      #define SUN4I_STA_ACK		(0x19 << 16)
      #define SUN4I_STA_ACK_DELIMITER	(0x1b << 16)
      #define SUN4I_STA_END		(0x1a << 16)
      #define SUN4I_STA_INTERMISSION	(0x12 << 16)
      #define SUN4I_STA_ACTIVE_ERROR	(0x11 << 16)
      #define SUN4I_STA_PASSIVE_ERROR	(0x16 << 16)
      #define SUN4I_STA_TOLERATE_DOMINANT_BITS	(0x13 << 16)
      #define SUN4I_STA_ERROR_DELIMITER	(0x17 << 16)
      #define SUN4I_STA_OVERLOAD	(0x1c << 16)
      #define SUN4I_STA_BUS_OFF	BIT(7)
      #define SUN4I_STA_ERR_STA	BIT(6)
      #define SUN4I_STA_TRANS_BUSY	BIT(5)
      #define SUN4I_STA_RCV_BUSY	BIT(4)
      #define SUN4I_STA_TRANS_OVER	BIT(3)
      #define SUN4I_STA_TBUF_RDY	BIT(2)
      #define SUN4I_STA_DATA_ORUN	BIT(1)
      #define SUN4I_STA_RBUF_RDY	BIT(0)
      
      /* interrupt register (r)
       * offset:0x000c default:0x0000_0000
       */
      #define SUN4I_INT_BUS_ERR	BIT(7)
      #define SUN4I_INT_ARB_LOST	BIT(6)
      #define SUN4I_INT_ERR_PASSIVE	BIT(5)
      #define SUN4I_INT_WAKEUP	BIT(4)
      #define SUN4I_INT_DATA_OR	BIT(3)
      #define SUN4I_INT_ERR_WRN	BIT(2)
      #define SUN4I_INT_TBUF_VLD	BIT(1)
      #define SUN4I_INT_RBUF_VLD	BIT(0)
      
      /* interrupt enable register (r/w)
       * offset:0x0010 default:0x0000_0000
       */
      #define SUN4I_INTEN_BERR	BIT(7)
      #define SUN4I_INTEN_ARB_LOST	BIT(6)
      #define SUN4I_INTEN_ERR_PASSIVE	BIT(5)
      #define SUN4I_INTEN_WAKEUP	BIT(4)
      #define SUN4I_INTEN_OR		BIT(3)
      #define SUN4I_INTEN_ERR_WRN	BIT(2)
      #define SUN4I_INTEN_TX		BIT(1)
      #define SUN4I_INTEN_RX		BIT(0)
      
      /* error code */
      #define SUN4I_ERR_INRCV		(0x1 << 5)
      #define SUN4I_ERR_INTRANS	(0x0 << 5)
      
      /* filter mode */
      #define SUN4I_FILTER_CLOSE	0
      #define SUN4I_SINGLE_FLTER_MODE	1
      #define SUN4I_DUAL_FILTER_MODE	2
      
      /* message buffer flags */
      #define SUN4I_MSG_EFF_FLAG	BIT(7)
      #define SUN4I_MSG_RTR_FLAG	BIT(6)
      
      /* max. number of interrupts handled in ISR */
      #define SUN4I_CAN_MAX_IRQ	20
      #define SUN4I_MODE_MAX_RETRIES	200
      
      struct sun4ican_priv {
      	struct can_priv can;
      	void __iomem *base;
      	struct clk *clk;
      	struct reset_control *reset;
      	spinlock_t cmdreg_lock;	/* lock for concurrent cmd register writes */
      };
      
      static const struct can_bittiming_const sun4ican_bittiming_const = {
      	.name = DRV_NAME,
      	.tseg1_min = 1,
      	.tseg1_max = 16,
      	.tseg2_min = 1,
      	.tseg2_max = 8,
      	.sjw_max = 4,
      	.brp_min = 1,
      	.brp_max = 64,
      	.brp_inc = 1,
      };
      
      static void sun4i_can_write_cmdreg(struct sun4ican_priv *priv, u8 val)
      {
      	unsigned long flags;
      
      	spin_lock_irqsave(&priv->cmdreg_lock, flags);
      	writel(val, priv->base + SUN4I_REG_CMD_ADDR);
      	spin_unlock_irqrestore(&priv->cmdreg_lock, flags);
      }
      
      static int set_normal_mode(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	int retry = SUN4I_MODE_MAX_RETRIES;
      	u32 mod_reg_val = 0;
      
      	do {
      		mod_reg_val = readl(priv->base + SUN4I_REG_MSEL_ADDR);
      		mod_reg_val &= ~SUN4I_MSEL_RESET_MODE;
      		writel(mod_reg_val, priv->base + SUN4I_REG_MSEL_ADDR);
      	} while (retry-- && (mod_reg_val & SUN4I_MSEL_RESET_MODE));
      
      	if (readl(priv->base + SUN4I_REG_MSEL_ADDR) & SUN4I_MSEL_RESET_MODE) {
      		netdev_err(dev,
      			   "setting controller into normal mode failed!\n");
      		return -ETIMEDOUT;
      	}
      
      	return 0;
      }
      
      static int set_reset_mode(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	int retry = SUN4I_MODE_MAX_RETRIES;
      	u32 mod_reg_val = 0;
      
      	do {
      		mod_reg_val = readl(priv->base + SUN4I_REG_MSEL_ADDR);
      		mod_reg_val |= SUN4I_MSEL_RESET_MODE;
      		writel(mod_reg_val, priv->base + SUN4I_REG_MSEL_ADDR);
      
      	} while (retry-- && !(mod_reg_val & SUN4I_MSEL_RESET_MODE));
      	
      	if (!(readl(priv->base + SUN4I_REG_MSEL_ADDR) &
      	      SUN4I_MSEL_RESET_MODE)) {
      		netdev_err(dev, "setting controller into reset mode failed!\n");
      		return -ETIMEDOUT;
      	}
      
      	return 0;
      }
      
      /* bittiming is called in reset_mode only */
      static int sun4ican_set_bittiming(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	struct can_bittiming *bt = &priv->can.bittiming;
      	u32 cfg;
      
      	cfg = ((bt->brp - 1) & 0x3FF) |
      	     (((bt->sjw - 1) & 0x3) << 14) |
      	     (((bt->prop_seg + bt->phase_seg1 - 1) & 0xf) << 16) |
      	     (((bt->phase_seg2 - 1) & 0x7) << 20);
      	if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES)
      		cfg |= 0x800000;
      
      	netdev_dbg(dev, "setting BITTIMING=0x%08x\n", cfg);
      	writel(cfg, priv->base + SUN4I_REG_BTIME_ADDR);
      
      	return 0;
      }
      
      static int sun4ican_get_berr_counter(const struct net_device *dev,
      				     struct can_berr_counter *bec)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	u32 errors;
      	int err;
      
      	err = clk_prepare_enable(priv->clk);
      	if (err) {
      		netdev_err(dev, "could not enable clock\n");
      		return err;
      	}
      
      	errors = readl(priv->base + SUN4I_REG_ERRC_ADDR);
      
      	bec->txerr = errors & 0xFF;
      	bec->rxerr = (errors >> 16) & 0xFF;
      
      	clk_disable_unprepare(priv->clk);
      
      	return 0;
      }
      
      static int sun4i_can_start(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	int err;
      	u32 mod_reg_val;
      
      	/* we need to enter the reset mode */
      	err = set_reset_mode(dev);
      	if (err) {
      		netdev_err(dev, "could not enter reset mode\n");
      		return err;
      	}
      
      	/* set filters - we accept all */
      	writel(0x00000000, priv->base + SUN4I_REG_ACPC_ADDR);
      	writel(0xFFFFFFFF, priv->base + SUN4I_REG_ACPM_ADDR);
      
      	/* clear error counters and error code capture */
      	writel(0, priv->base + SUN4I_REG_ERRC_ADDR);
      
      	/* enable interrupts */
      	if (priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
      		writel(0xFF, priv->base + SUN4I_REG_INTEN_ADDR);
      	else
      		writel(0xFF & ~SUN4I_INTEN_BERR,
      		       priv->base + SUN4I_REG_INTEN_ADDR);
      
      	/* enter the selected mode */
      	mod_reg_val = readl(priv->base + SUN4I_REG_MSEL_ADDR);
      	if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
      		mod_reg_val |= SUN4I_MSEL_LOOPBACK_MODE;
      	else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
      		mod_reg_val |= SUN4I_MSEL_LISTEN_ONLY_MODE;
      	writel(mod_reg_val, priv->base + SUN4I_REG_MSEL_ADDR);
      
      	err = sun4ican_set_bittiming(dev);
      	if (err)
      		return err;
      
      	/* we are ready to enter the normal mode */
      	err = set_normal_mode(dev);
      	if (err) {
      		netdev_err(dev, "could not enter normal mode\n");
      		return err;
      	}
      
      	priv->can.state = CAN_STATE_ERROR_ACTIVE;
      
      	return 0;
      }
      
      static int sun4i_can_stop(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	int err;
      
      	priv->can.state = CAN_STATE_STOPPED;
      	/* we need to enter reset mode */
      	err = set_reset_mode(dev);
      	if (err) {
      		netdev_err(dev, "could not enter reset mode\n");
      		return err;
      	}
      
      	/* disable all interrupts */
      	writel(0, priv->base + SUN4I_REG_INTEN_ADDR);
      
      	return 0;
      }
      
      static int sun4ican_set_mode(struct net_device *dev, enum can_mode mode)
      {
      	int err;
      
      	switch (mode) {
      	case CAN_MODE_START:
      		err = sun4i_can_start(dev);
      		if (err) {
      			netdev_err(dev, "starting CAN controller failed!\n");
      			return err;
      		}
      		if (netif_queue_stopped(dev))
      			netif_wake_queue(dev);
      		break;
      
      	default:
      		return -EOPNOTSUPP;
      	}
      	return 0;
      }
      
      /* transmit a CAN message
       * message layout in the sk_buff should be like this:
       * xx xx xx xx         ff         ll 00 11 22 33 44 55 66 77
       * [ can_id ] [flags] [len] [can data (up to 8 bytes]
       */
      static netdev_tx_t sun4ican_start_xmit(struct sk_buff *skb, struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	struct can_frame *cf = (struct can_frame *)skb->data;
      	u8 dlc;
      	u32 dreg, msg_flag_n;
      	canid_t id;
      	int i;
      
      	if (can_dropped_invalid_skb(dev, skb))
      		return NETDEV_TX_OK;
      
      	netif_stop_queue(dev);
      
      	id = cf->can_id;
      	dlc = cf->can_dlc;
      	msg_flag_n = dlc;
      
      	if (id & CAN_RTR_FLAG)
      		msg_flag_n |= SUN4I_MSG_RTR_FLAG;
      
      	if (id & CAN_EFF_FLAG) {
      		msg_flag_n |= SUN4I_MSG_EFF_FLAG;
      		dreg = SUN4I_REG_BUF5_ADDR;
      		writel((id >> 21) & 0xFF, priv->base + SUN4I_REG_BUF1_ADDR);
      		writel((id >> 13) & 0xFF, priv->base + SUN4I_REG_BUF2_ADDR);
      		writel((id >> 5)  & 0xFF, priv->base + SUN4I_REG_BUF3_ADDR);
      		writel((id << 3)  & 0xF8, priv->base + SUN4I_REG_BUF4_ADDR);
      	} else {
      		dreg = SUN4I_REG_BUF3_ADDR;
      		writel((id >> 3) & 0xFF, priv->base + SUN4I_REG_BUF1_ADDR);
      		writel((id << 5) & 0xE0, priv->base + SUN4I_REG_BUF2_ADDR);
      	}
      
      	for (i = 0; i < dlc; i++)
      		writel(cf->data[i], priv->base + (dreg + i * 4));
      
      	writel(msg_flag_n, priv->base + SUN4I_REG_BUF0_ADDR);
      
      	can_put_echo_skb(skb, dev, 0);
      
      	if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
      		sun4i_can_write_cmdreg(priv, SUN4I_CMD_SELF_RCV_REQ);
      	else
      		sun4i_can_write_cmdreg(priv, SUN4I_CMD_TRANS_REQ);
      
      	return NETDEV_TX_OK;
      }
      
      static void sun4i_can_rx(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	struct net_device_stats *stats = &dev->stats;
      	struct can_frame *cf;
      	struct sk_buff *skb;
      	u8 fi;
      	u32 dreg;
      	canid_t id;
      	int i;
      
      	/* create zero'ed CAN frame buffer */
      	skb = alloc_can_skb(dev, &cf);
      	if (!skb)
      		return;
      
      	fi = readl(priv->base + SUN4I_REG_BUF0_ADDR);
      	cf->can_dlc = get_can_dlc(fi & 0x0F);
      	if (fi & SUN4I_MSG_EFF_FLAG) {
      		dreg = SUN4I_REG_BUF5_ADDR;
      		id = (readl(priv->base + SUN4I_REG_BUF1_ADDR) << 21) |
      		     (readl(priv->base + SUN4I_REG_BUF2_ADDR) << 13) |
      		     (readl(priv->base + SUN4I_REG_BUF3_ADDR) << 5)  |
      		    ((readl(priv->base + SUN4I_REG_BUF4_ADDR) >> 3)  & 0x1f);
      		id |= CAN_EFF_FLAG;
      	} else {
      		dreg = SUN4I_REG_BUF3_ADDR;
      		id = (readl(priv->base + SUN4I_REG_BUF1_ADDR) << 3) |
      		    ((readl(priv->base + SUN4I_REG_BUF2_ADDR) >> 5) & 0x7);
      	}
      
      	/* remote frame ? */
      	if (fi & SUN4I_MSG_RTR_FLAG)
      		id |= CAN_RTR_FLAG;
      	else
      		for (i = 0; i < cf->can_dlc; i++)
      			cf->data[i] = readl(priv->base + dreg + i * 4);
      
      	cf->can_id = id;
      
      	sun4i_can_write_cmdreg(priv, SUN4I_CMD_RELEASE_RBUF);
      
      	stats->rx_packets++;
      	stats->rx_bytes += cf->can_dlc;
      	netif_rx(skb);
      
      	can_led_event(dev, CAN_LED_EVENT_RX);
      }
      
      static int sun4i_can_err(struct net_device *dev, u8 isrc, u8 status)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	struct net_device_stats *stats = &dev->stats;
      	struct can_frame *cf;
      	struct sk_buff *skb;
      	enum can_state state = priv->can.state;
      	enum can_state rx_state, tx_state;
      	unsigned int rxerr, txerr, errc;
      	u32 ecc, alc;
      
      	/* we don't skip if alloc fails because we want the stats anyhow */
      	skb = alloc_can_err_skb(dev, &cf);
      
      	errc = readl(priv->base + SUN4I_REG_ERRC_ADDR);
      	rxerr = (errc >> 16) & 0xFF;
      	txerr = errc & 0xFF;
      
      	if (skb) {
      		cf->data[6] = txerr;
      		cf->data[7] = rxerr;
      	}
      
      	if (isrc & SUN4I_INT_DATA_OR) {
      		/* data overrun interrupt */
      		netdev_dbg(dev, "data overrun interrupt\n");
      		if (likely(skb)) {
      			cf->can_id |= CAN_ERR_CRTL;
      			cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
      		}
      		stats->rx_over_errors++;
      		stats->rx_errors++;
      
      		/* reset the CAN IP by entering reset mode
      		 * ignoring timeout error
      		 */
      		set_reset_mode(dev);
      		set_normal_mode(dev);
      
      		/* clear bit */
      		sun4i_can_write_cmdreg(priv, SUN4I_CMD_CLEAR_OR_FLAG);
      	}
      	if (isrc & SUN4I_INT_ERR_WRN) {
      		/* error warning interrupt */
      		netdev_dbg(dev, "error warning interrupt\n");
      
      		if (status & SUN4I_STA_BUS_OFF)
      			state = CAN_STATE_BUS_OFF;
      		else if (status & SUN4I_STA_ERR_STA)
      			state = CAN_STATE_ERROR_WARNING;
      		else
      			state = CAN_STATE_ERROR_ACTIVE;
      	}
      	if (isrc & SUN4I_INT_BUS_ERR) {
      		/* bus error interrupt */
      		netdev_dbg(dev, "bus error interrupt\n");
      		priv->can.can_stats.bus_error++;
      		stats->rx_errors++;
      
      		if (likely(skb)) {
      			ecc = readl(priv->base + SUN4I_REG_STA_ADDR);
      
      			cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
      
      			switch (ecc & SUN4I_STA_MASK_ERR) {
      			case SUN4I_STA_BIT_ERR:
      				cf->data[2] |= CAN_ERR_PROT_BIT;
      				break;
      			case SUN4I_STA_FORM_ERR:
      				cf->data[2] |= CAN_ERR_PROT_FORM;
      				break;
      			case SUN4I_STA_STUFF_ERR:
      				cf->data[2] |= CAN_ERR_PROT_STUFF;
      				break;
      			default:
      				cf->data[3] = (ecc & SUN4I_STA_ERR_SEG_CODE)
      					       >> 16;
      				break;
      			}
      			/* error occurred during transmission? */
      			if ((ecc & SUN4I_STA_ERR_DIR) == 0)
      				cf->data[2] |= CAN_ERR_PROT_TX;
      		}
      	}
      	if (isrc & SUN4I_INT_ERR_PASSIVE) {
      		/* error passive interrupt */
      		netdev_dbg(dev, "error passive interrupt\n");
      		if (state == CAN_STATE_ERROR_PASSIVE)
      			state = CAN_STATE_ERROR_WARNING;
      		else
      			state = CAN_STATE_ERROR_PASSIVE;
      	}
      	if (isrc & SUN4I_INT_ARB_LOST) {
      		/* arbitration lost interrupt */
      		netdev_dbg(dev, "arbitration lost interrupt\n");
      		alc = readl(priv->base + SUN4I_REG_STA_ADDR);
      		priv->can.can_stats.arbitration_lost++;
      		stats->tx_errors++;
      		if (likely(skb)) {
      			cf->can_id |= CAN_ERR_LOSTARB;
      			cf->data[0] = (alc >> 8) & 0x1f;
      		}
      	}
      
      	if (state != priv->can.state) {
      		tx_state = txerr >= rxerr ? state : 0;
      		rx_state = txerr <= rxerr ? state : 0;
      
      		if (likely(skb))
      			can_change_state(dev, cf, tx_state, rx_state);
      		else
      			priv->can.state = state;
      		if (state == CAN_STATE_BUS_OFF)
      			can_bus_off(dev);
      	}
      
      	if (likely(skb)) {
      		stats->rx_packets++;
      		stats->rx_bytes += cf->can_dlc;
      		netif_rx(skb);
      	} else {
      		return -ENOMEM;
      	}
      
      	return 0;
      }
      
      static irqreturn_t sun4i_can_interrupt(int irq, void *dev_id)
      {
      	struct net_device *dev = (struct net_device *)dev_id;
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	struct net_device_stats *stats = &dev->stats;
      	u8 isrc, status;
      	int n = 0;
      
      	while ((isrc = readl(priv->base + SUN4I_REG_INT_ADDR)) &&
      	       (n < SUN4I_CAN_MAX_IRQ)) {
      		n++;
      		status = readl(priv->base + SUN4I_REG_STA_ADDR);
      
      		if (isrc & SUN4I_INT_WAKEUP)
      			netdev_warn(dev, "wakeup interrupt\n");
      
      		if (isrc & SUN4I_INT_TBUF_VLD) {
      			/* transmission complete interrupt */
      			stats->tx_bytes +=
      			    readl(priv->base +
      				  SUN4I_REG_RBUF_RBACK_START_ADDR) & 0xf;
      			stats->tx_packets++;
      			can_get_echo_skb(dev, 0);
      			netif_wake_queue(dev);
      			can_led_event(dev, CAN_LED_EVENT_TX);
      		}
      		if ((isrc & SUN4I_INT_RBUF_VLD) &&
      		    !(isrc & SUN4I_INT_DATA_OR)) {
      			/* receive interrupt - don't read if overrun occurred */
      			while (status & SUN4I_STA_RBUF_RDY) {
      				/* RX buffer is not empty */
      				sun4i_can_rx(dev);
      				status = readl(priv->base + SUN4I_REG_STA_ADDR);
      			}
      		}
      		if (isrc &
      		    (SUN4I_INT_DATA_OR | SUN4I_INT_ERR_WRN | SUN4I_INT_BUS_ERR |
      		     SUN4I_INT_ERR_PASSIVE | SUN4I_INT_ARB_LOST)) {
      			/* error interrupt */
      			if (sun4i_can_err(dev, isrc, status))
      				netdev_err(dev, "can't allocate buffer - clearing pending interrupts\n");
      		}
      		/* clear interrupts */
      		writel(isrc, priv->base + SUN4I_REG_INT_ADDR);
      		readl(priv->base + SUN4I_REG_INT_ADDR);
      	}
      	if (n >= SUN4I_CAN_MAX_IRQ)
      		netdev_dbg(dev, "%d messages handled in ISR", n);
      
      	return (n) ? IRQ_HANDLED : IRQ_NONE;
      }
      
      static int sun4ican_open(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      	int err;
      
      	/* common open */
      	err = open_candev(dev);
      	if (err)
      		return err;
      
      	/* register interrupt handler */
      	err = request_irq(dev->irq, sun4i_can_interrupt, 0, dev->name, dev);
      	if (err) {
      		netdev_err(dev, "request_irq err: %d\n", err);
      		goto exit_irq;
      	}
      
      	err = reset_control_assert(priv->reset);
      	if (err) {
      		netdev_err(dev, "[CAN] Unable to assert reset clock return %x\n", PTR_RET(priv->clk));
      		goto exit_clock;
      	}
      	err =reset_control_deassert(priv->reset) ;
      	if (err) {
      		netdev_err(dev,"[CAN] Unable to deassert reset clock return %x\n", PTR_RET(priv->clk));
      		goto exit_clock;
      	}
      
      	/* turn on clocking for CAN peripheral block */
      	err = clk_prepare_enable(priv->clk);
      	if (err) {
      		netdev_err(dev, "could not enable CAN peripheral clock\n");
      		goto exit_clock;
      	}
      
      	err = sun4i_can_start(dev);
      	if (err) {
      		netdev_err(dev, "could not start CAN peripheral\n");
      		goto exit_can_start;
      	}
      
      	can_led_event(dev, CAN_LED_EVENT_OPEN);
      	netif_start_queue(dev);
      
      	return 0;
      
      exit_can_start:
      	clk_disable_unprepare(priv->clk);
      exit_clock:
      	free_irq(dev->irq, dev);
      exit_irq:
      	close_candev(dev);
      	return err;
      }
      
      static int sun4ican_close(struct net_device *dev)
      {
      	struct sun4ican_priv *priv = netdev_priv(dev);
      
      	netif_stop_queue(dev);
      	sun4i_can_stop(dev);
      	clk_disable_unprepare(priv->clk);
      
      	free_irq(dev->irq, dev);
      	close_candev(dev);
      	can_led_event(dev, CAN_LED_EVENT_STOP);
      
      	return 0;
      }
      
      static const struct net_device_ops sun4ican_netdev_ops = {
      	.ndo_open = sun4ican_open,
      	.ndo_stop = sun4ican_close,
      	.ndo_start_xmit = sun4ican_start_xmit,
      };
      
      static const struct of_device_id sun4ican_of_match[] = {
      	{.compatible = "allwinner,sunxi-t113-can"},
      	{},
      };
      
      MODULE_DEVICE_TABLE(of, sun4ican_of_match);
      
      static int sun4ican_remove(struct platform_device *pdev)
      {
      	struct net_device *dev = platform_get_drvdata(pdev);
      
      	unregister_netdev(dev);
      	free_candev(dev);
      
      	return 0;
      }
      
      static int sun4ican_probe(struct platform_device *pdev)
      {
      	struct device_node *np = pdev->dev.of_node;
      	struct resource *mem_res;
      	struct clk *clk;
      	void __iomem *addr;
      	int err, irq;
      	struct net_device *dev;
      	struct sun4ican_priv *priv;
      	struct reset_control *reset;
      	clk = of_clk_get(np, 0);
      	if (IS_ERR(clk)) {
      		dev_err(&pdev->dev, "unable to request clock\n");
      		err = -ENODEV;
      		goto exit;
      	}
      
      	irq = platform_get_irq(pdev, 0);
      	if (irq < 0) {
      		dev_err(&pdev->dev, "could not get a valid irq\n");
      		err = -ENODEV;
      		goto exit;
      	}
      
      	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
      	//dev_info(&pdev->dev, "CAN device phy_addr 0x%x)\n",(u32)mem_res->start);
      	addr = devm_ioremap_resource(&pdev->dev, mem_res);
      
      	if (IS_ERR(addr)) {
      		err = -EBUSY;
      		goto exit;
      	}
      
      	reset=devm_reset_control_get(&pdev->dev, NULL);
      		if (IS_ERR_OR_NULL(reset)) {
      				dev_err(&pdev->dev,"[can] Unable to acquire reset clock , return %x\n",PTR_RET(reset));
      			err =  -ENXIO;
      			goto  exit;
      		}
      
      	dev = alloc_candev(sizeof(struct sun4ican_priv), 1);
      	if (!dev) {
      		dev_err(&pdev->dev,"could not allocate memory for CAN device\n");
      		err = -ENOMEM;
      		goto exit;
      	}
      
      	dev->netdev_ops = &sun4ican_netdev_ops;
      	dev->irq = irq;
      	dev->flags |= IFF_ECHO;
      
      	priv = netdev_priv(dev);
      	priv->can.clock.freq = clk_get_rate(clk);
      	priv->can.bittiming_const = &sun4ican_bittiming_const;
      	priv->can.do_set_mode = sun4ican_set_mode;
      	priv->can.do_get_berr_counter = sun4ican_get_berr_counter;
      	priv->can.ctrlmode_supported = CAN_CTRLMODE_BERR_REPORTING |
      				       CAN_CTRLMODE_LISTENONLY |
      				       CAN_CTRLMODE_LOOPBACK |
      				       CAN_CTRLMODE_3_SAMPLES;
      	priv->base = addr;
      	priv->clk = clk;
      	priv->reset= reset;
      	spin_lock_init(&priv->cmdreg_lock);
      
      	platform_set_drvdata(pdev, dev);
      	SET_NETDEV_DEV(dev, &pdev->dev);
      
      	err = register_candev(dev);
      	if (err) {
      		dev_err(&pdev->dev, "registering %s failed (err=%d)\n",
      			DRV_NAME, err);
      		goto exit_free;
      	}
      	devm_can_led_init(dev);
      
      	dev_info(&pdev->dev, "device registered ( base=%p, irq=%d )\n",
      		 priv->base, dev->irq);
      
      	return 0;
      
      exit_free:
      	free_candev(dev);
      exit:
      	return err;
      }
      
      static struct platform_driver sun4i_can_driver = {
      	.driver = {
      		.name = DRV_NAME,
      		.of_match_table = sun4ican_of_match,
      	},
      	.probe = sun4ican_probe,
      	.remove = sun4ican_remove,
      };
      
      module_platform_driver(sun4i_can_driver);
      
      MODULE_AUTHOR("Peter Chen <xingkongcp@gmail.com>");
      MODULE_AUTHOR("Gerhard Bertelsmann <info@gerhard-bertelsmann.de>");
      MODULE_LICENSE("Dual BSD/GPL");
      MODULE_DESCRIPTION("CAN driver for Allwinner SoCs (T113-s3)");
      
      

      drivers/net/can/Kconfig 加入
      粗体字

      config CAN_SUN8I
              tristate "Sun8i CAN bus controller"
              default n
              help
              This is the Sun8i CAN BUS driver for android system by peter chen.
      

      drivers/net/can/Makefile 加入

      obj-$(CONFIG_CAN_SUN8I)		+= sun4i_can.o
      
      A L 3 Replies Last reply Reply Quote Share 9
      • Moved from 公告 by  q1215200171 q1215200171 
      • A
        a892755772 LV 5 @liukia last edited by

        @liukia 大侠 有应用的测试程序吗 贴上来看看吧 想知道怎么初始化 发送 接收 数据

        L 1 Reply Last reply Reply Quote Share 2
        • L
          linsen LV 7 @a892755772 last edited by

          @a892755772 6ad8fb50-d634-4dbc-8f37-ff469bfee22f-lQLPJxabzkM18HzNAzbNBgewfnFcmqcitrEDAFag9MB1AA_1543_822.png

          A M 2 Replies Last reply Reply Quote Share 1
          • A
            a892755772 LV 5 @lansecd last edited by

            @lansecd 读取压力测试怎么样 我这边1M速度 8000多帧会出现丢帧 2500帧才稳定

            L 1 Reply Last reply Reply Quote Share 0
            • L
              linsen LV 7 @a892755772 last edited by

              @a892755772 压力测试没啥问题,老哥USB1用了没,配置CAN工作后,USB1做HOST没反应了,有遇到不

              A 1 Reply Last reply Reply Quote Share 0
              • Referenced by  L liukia 
              • A
                a892755772 LV 5 @lansecd last edited by

                @lansecd USB1 没有用啊

                L 1 Reply Last reply Reply Quote Share 0
                • L
                  Observer LV 2 @a892755772 last edited by

                  @a892755772 有解决吗,我也遇到类似的问题

                  L 1 Reply Last reply Reply Quote Share 0
                  • L
                    linsen LV 7 @Lizh023 last edited by

                    @lizh023 还没有找到问题,CAN0会影响USB1,CAN1没事

                    L 2 Replies Last reply Reply Quote Share 0
                    • L
                      Observer LV 2 @lansecd last edited by

                      This post is deleted!
                      1 Reply Last reply Reply Quote Share 0
                      • L
                        Observer LV 2 @lansecd last edited by

                        @lansecd @a892755772 刚刚没有描述清楚我的问题,我也遇到压力测试会丢帧的问题,这边1M速度 75%总线负载下测试!有时候也会出现CAN掉线异常状态。你们有思路可以分享一下吗

                        A 1 Reply Last reply Reply Quote Share 0
                        • A
                          a892755772 LV 5 @Lizh023 last edited by

                          @lizh023 我发现禁用网络就没有问题 就是不连接WiFi 把掉网线。猜测是CAN在Linux这边认为是网络设备 其他网络设备通讯导致丢帧

                          1 Reply Last reply Reply Quote Share 0
                          • M
                            msh410278586 LV 5 @lansecd last edited by

                            @lansecd
                            你好,我按照上面修改,执行cansend can0 123#1122334455667788会报错,跪求大佬给看看吧!

                            root@TinaLinux:/# cansend can0 123#1122334455667788
                            interface = can0, family = 29, type = 3, proto = 1[   55.350220] sunxi_can 2504000.can can0: error warning interrupt
                            [   55.360888] sunxi_can 2504000.can can0: bus error interrupt
                            [   55.367103] sunxi_can 2504000.can can0: New error state: 1
                            root@TinaLinux:/# ifconfig can0
                            can0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
                                      UP RUNNING NOARP  MTU:16  Metric:1
                                      RX packets:1 errors:1 dropped:0 overruns:0 frame:0
                                      TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
                                      collisions:0 txqueuelen:10 
                                      RX bytes:8 (8.0 B)  TX bytes:0 (0.0 B)
                                      Interrupt:45 
                            root@TinaLinux:/# ip -detail link show can0
                            2: can0: <NOARP,UP,LOWER_UP,ECHO> mtu 16 qdisc pfifo_fast state UP mode DEFAULT group default qlen 10
                                link/can  promiscuity 0 minmtu 0 maxmtu 0 
                                can state ERROR-WARNING (berr-counter tx 183 rx 0) restart-ms 0 
                            	  bitrate 125000 sample-point 0.875
                            	  tq 500 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1 brp 12
                            	  sunxi_can: tseg1 1..16 tseg2 1..8 sjw 1..4 brp 1..64 brp_inc 1
                            	  clock 24000000 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535 
                            
                            

                            下面是启动信息

                            [    0.000000] Booting Linux on physical CPU 0x0
                            [    0.000000] Linux version 5.4.61 (t113@t113) (arm-openwrt-linux-muslgnueabi-gcc.bin (OpenWrt/CodeSourcery GCC 8.3.0 2021.08) 8.3.0, GNU ld (GNU Binutils) 2.28) #269 SMP PREEMPT Mon Oct 17 08:37:45 UTC 2022
                            [    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=10c5387d
                            [    0.000000] CPU: div instructions available: patching division code
                            [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
                            [    0.000000] OF: fdt: Machine model: sun8iw20
                            [    0.000000] printk: bootconsole [earlycon0] enabled
                            [    0.000000] Memory policy: Data cache writealloc
                            [    0.000000] cma: Reserved 4 MiB at 0x47c00000
                            [    0.000000] On node 0 totalpages: 32768
                            [    0.000000]   Normal zone: 256 pages used for memmap
                            [    0.000000]   Normal zone: 0 pages reserved
                            [    0.000000]   Normal zone: 32768 pages, LIFO batch:7
                            [    0.000000] psci: probing for conduit method from DT.
                            [    0.000000] psci: PSCIv1.0 detected in firmware.
                            [    0.000000] psci: Using standard PSCI v0.2 function IDs
                            [    0.000000] psci: MIGRATE_INFO_TYPE not supported.
                            [    0.000000] psci: SMC Calling Convention v1.0
                            [    0.000000] percpu: Embedded 15 pages/cpu s30412 r8192 d22836 u61440
                            [    0.000000] pcpu-alloc: s30412 r8192 d22836 u61440 alloc=15*4096
                            [    0.000000] pcpu-alloc: [0] 0 [0] 1 
                            [    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 32512
                            [    0.000000] Kernel command line: earlyprintk=sunxi-uart,0x02500C00 clk_ignore_unused initcall_debug=0 console=ttyS3,115200 rootdelay=2 loglevel=8 root=/dev/mmcblk0p5 init=/pseudo_init partitions=boot-resource@mmcblk0p1:env@mmcblk0p2:env-redund@mmcblk0p3:boot@mmcblk0p4:rootfs@mmcblk0p5:private@mmcblk0p6:rootfs_data@mmcblk0p7:UDISK@mmcblk0p8 cma=4M snum= mac_addr= wifi_mac= bt_mac= specialstr= gpt=1 androidboot.mode=normal androidboot.hardware=sun8iw20p1 boot_type=2 androidboot.boot_type=2 gpt=1 uboot_message=2018.05-g2a1965a-dirty(07/10/2022-02:50:57) mbr_offset=1032192 disp_reserve=2457600,0x43f06000 androidboot.dramsize=128 
                            [    0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes, linear)
                            [    0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes, linear)
                            [    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
                            [    0.000000] Memory: 104088K/131072K available (6144K kernel code, 281K rwdata, 1624K rodata, 1024K init, 1168K bss, 22888K reserved, 4096K cma-reserved)
                            [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
                            [    0.000000] rcu: Preemptible hierarchical RCU implementation.
                            [    0.000000] 	Tasks RCU enabled.
                            [    0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
                            [    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
                            [    0.000000] random: get_random_bytes called from start_kernel+0x258/0x3dc with crng_init=0
                            [    0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (phys).
                            [    0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
                            [    0.000005] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
                            [    0.008007] Switching to timer-based delay loop, resolution 41ns
                            [    0.014187] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
                            [    0.023900] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
                            [    0.034266] pid_max: default: 32768 minimum: 301
                            [    0.039007] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
                            [    0.046346] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear)
                            [    0.054661] CPU: Testing write buffer coherency: ok
                            [    0.059860] /cpus/cpu@0 missing clock-frequency property
                            [    0.065202] /cpus/cpu@1 missing clock-frequency property
                            [    0.070539] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
                            [    0.076701] Setting up static identity map for 0x40100000 - 0x40100060
                            [    0.083355] rcu: Hierarchical SRCU implementation.
                            [    0.088557] smp: Bringing up secondary CPUs ...
                            [    0.094199] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
                            [    0.094322] smp: Brought up 1 node, 2 CPUs
                            [    0.104142] SMP: Total of 2 processors activated (96.00 BogoMIPS).
                            [    0.110337] CPU: All CPU(s) started in SVC mode.
                            [    0.115403] devtmpfs: initialized
                            [    0.130531] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
                            [    0.138635] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
                            [    0.148749] pinctrl core: initialized pinctrl subsystem
                            [    0.154915] NET: Registered protocol family 16
                            [    0.160898] DMA: preallocated 256 KiB pool for atomic coherent allocations
                            [    0.195317] rtc_ccu: sunxi ccu init OK
                            [    0.201339] ccu: sunxi ccu init OK
                            [    0.205167] r_ccu: sunxi ccu init OK
                            [    0.228353] iommu: Default domain type: Translated 
                            [    0.233437] sunxi iommu: irq = 24
                            [    0.237604] SCSI subsystem initialized
                            [    0.241619] usbcore: registered new interface driver usbfs
                            [    0.247147] usbcore: registered new interface driver hub
                            [    0.252569] usbcore: registered new device driver usb
                            [    0.258353] Advanced Linux Sound Architecture Driver Initialized.
                            [    0.265176] Bluetooth: Core ver 2.22
                            [    0.268801] NET: Registered protocol family 31
                            [    0.273237] Bluetooth: HCI device and connection manager initialized
                            [    0.279633] Bluetooth: HCI socket layer initialized
                            [    0.284524] Bluetooth: L2CAP socket layer initialized
                            [    0.289593] Bluetooth: SCO socket layer initialized
                            [    0.294730] pwm module init!
                            [    0.298757] g2d 5410000.g2d: Adding to iommu group 0
                            [    0.304012] G2D: rcq version initialized.major:251
                            [    0.309628] clocksource: Switched to clocksource arch_sys_counter
                            [    0.324253] sun8iw20-pinctrl 2000000.pinctrl: initialized sunXi PIO driver
                            [    0.332880] sunxi udc is no enable
                            [    0.336514] NET: Registered protocol family 2
                            [    0.341638] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear)
                            [    0.350072] TCP established hash table entries: 1024 (order: 0, 4096 bytes, linear)
                            [    0.357739] TCP bind hash table entries: 1024 (order: 1, 8192 bytes, linear)
                            [    0.364819] TCP: Hash tables configured (established 1024 bind 1024)
                            [    0.371276] UDP hash table entries: 256 (order: 1, 8192 bytes, linear)
                            [    0.377835] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear)
                            [    0.385028] NET: Registered protocol family 1
                            [    0.391574] workingset: timestamp_bits=30 max_order=15 bucket_order=0
                            [    0.403041] squashfs: version 4.0 (2009/01/31) Phillip Lougher
                            [    0.409014] ntfs: driver 2.1.32 [Flags: R/W].
                            [    0.448760] io scheduler mq-deadline registered
                            [    0.453322] io scheduler kyber registered
                            [    0.458352] [DISP]disp_module_init
                            [    0.462326] disp 5000000.disp: Adding to iommu group 0
                            [    0.467981] [DISP] disp_init,line:2386:
                            [    0.467986] smooth display screen:0 type:1 mode:4
                            [    0.493181] display_fb_request,fb_id:0
                            [    0.502267] Freeing logo buffer memory: 2400K
                            [    0.507097] disp_al_manager_apply ouput_type:1
                            [    0.509886] [DISP]disp_module_init finish
                            [    0.511722] [DISP] lcd_clk_config,line:744:
                            [    0.511733] disp 0, clk: pll(364000000),clk(364000000),dclk(52000000) dsi_rate(364000000)
                            [    0.511733]      clk real:pll(360000000),clk(360000000),dclk(51428571) dsi_rate(0)
                            [    0.516494] sunxi_sid_init()551 - insmod ok
                            [    0.520032] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pd not found, using dummy regulator
                            [    0.536495] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pe not found, using dummy regulator
                            [    0.559881] uart uart0: uart0 supply uart not found, using dummy regulator
                            [    0.567000] uart0: ttyS0 at MMIO 0x2500000 (irq = 34, base_baud = 1500000) is a SUNXI
                            [    0.575522] uart uart3: uart3 supply uart not found, using dummy regulator
                            [    0.582711] uart3: ttyS3 at MMIO 0x2500c00 (irq = 35, base_baud = 1500000) is a SUNXI
                            [    0.590609] sw_console_setup()1808 - console setup baud 115200 parity n bits 8, flow n
                            ÿ[    0.598592] printk: console [ttyS3] enabled
                            [    0.598592] printk: console [ttyS3] enabled
                            [    0.607514] printk: bootconsole [earlycon0] disabled
                            [    0.607514] printk: bootconsole [earlycon0] disabled
                            [    0.618662] uart uart4: uart4 supply uart not found, using dummy regulator
                            [    0.626640] uart4: ttyS4 at MMIO 0x2501000 (irq = 36, base_baud = 1500000) is a SUNXI
                            [    0.635984] uart uart5: uart5 supply uart not found, using dummy regulator
                            [    0.643957] uart5: ttyS5 at MMIO 0x2501400 (irq = 37, base_baud = 1500000) is a SUNXI
                            [    0.653437] misc dump reg init
                            [    0.658160] dma-buf: Running sanitycheck
                            [    0.662578] dma-buf: Running dma_fence
                            [    0.666755] sizeof(dma_fence)=48
                            [    0.670458] dma-buf: Running dma_fence/sanitycheck
                            [    0.675832] dma-buf: Running dma_fence/test_signaling
                            [    0.681480] dma-buf: Running dma_fence/test_add_callback
                            [    0.687402] dma-buf: Running dma_fence/test_late_add_callback
                            [    0.693829] dma-buf: Running dma_fence/test_rm_callback
                            [    0.699668] dma-buf: Running dma_fence/test_late_rm_callback
                            [    0.705984] dma-buf: Running dma_fence/test_status
                            [    0.711336] dma-buf: Running dma_fence/test_error
                            [    0.716579] dma-buf: Running dma_fence/test_wait
                            [    0.721738] dma-buf: Running dma_fence/test_wait_timeout
                            [    0.759643] dma-buf: Running dma_fence/test_stub
                            [    0.764809] dma-buf: Running dma_fence/race_signal_callback
                            [    0.839640] thread_signal_callback[0] completed 36602 passes, 50 misses
                            [    0.847046] thread_signal_callback[1] completed 36579 passes, 27 misses
                            [    0.919646] thread_signal_callback[0] completed 40641 passes, 40638 misses
                            [    0.927340] thread_signal_callback[1] completed 40629 passes, 40628 misses
                            [    0.935570] libphy: Fixed MDIO Bus: probed
                            [    0.940183] CAN device driver interface
                            [    0.944573] usbcore: registered new interface driver usb_8dev
                            [    0.951066] usbcore: registered new interface driver ems_usb
                            [    0.957409] usbcore: registered new interface driver esd_usb2
                            [    0.963883] usbcore: registered new interface driver gs_usb
                            [    0.970206] usbcore: registered new interface driver kvaser_usb
                            [    0.976838] usbcore: registered new interface driver mcba_usb
                            [    0.983303] usbcore: registered new interface driver peak_usb
                            [    0.989756] usbcore: registered new interface driver ucan
                            [    0.996084] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pb not found, using dummy regulator
                            [    1.007874] sunxi_can 2504000.can: device registered ( base=(ptrval), irq=45 )
                            [    1.016713] sunxi_can 2504400.can: device registered ( base=(ptrval), irq=46 )
                            [    1.025225] usbcore: registered new interface driver cdc_ether
                            [    1.031806] usbcore: registered new interface driver rndis_host
                            [    1.038444] usbcore: registered new interface driver qmi_wwan
                            [    1.044864] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
                            [    1.052153] sunxi-ehci: EHCI SUNXI driver
                            [    1.057031] get ehci0-controller wakeup-source is fail.
                            [    1.062881] sunxi ehci0-controller is no enable
                            [    1.067934] sunxi-ehci 4101000.ehci0-controller: init_sunxi_hci is fail
                            [    1.075342] sunxi-ehci: probe of 4101000.ehci0-controller failed with error -1
                            [    1.083470] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
                            [    1.090403] sunxi-ohci: OHCI SUNXI driver
                            [    1.095277] get ohci0-controller wakeup-source is fail.
                            [    1.101126] sunxi ohci0-controller is no enable
                            [    1.106178] sunxi-ohci 4101400.ohci0-controller: init_sunxi_hci is fail
                            [    1.113586] sunxi-ohci: probe of 4101400.ohci0-controller failed with error -1
                            [    1.121771] usbcore: registered new interface driver cdc_wdm
                            [    1.128143] usbcore: registered new interface driver usb-storage
                            [    1.134970] usbcore: registered new interface driver usbserial_generic
                            [    1.142291] usbserial: USB Serial support registered for generic
                            [    1.149016] usbcore: registered new interface driver option
                            [    1.155266] usbserial: USB Serial support registered for GSM modem (1-port)
                            [    1.163182] i2c /dev entries driver
                            [    1.167142] sunxi cedar version 1.1
                            [    1.171223] sunxi-cedar 1c0e000.ve: Adding to iommu group 0
                            [    1.177457] VE: failed to get alias ve id
                            [    1.177457] 
                            [    1.183585] VE: sunxi_cedar_probe power-domain init!!!
                            [    1.189316] VE: install start!!!
                            [    1.189316] 
                            [    1.194830] VE: cedar-ve the get irq is 43
                            [    1.194830] 
                            [    1.201248] VE: ve_debug_proc_info:(ptrval), data:(ptrval), lock:(ptrval)
                            [    1.201248] 
                            [    1.210485] VE: install end!!!
                            [    1.210485] 
                            [    1.215531] VE: sunxi_cedar_probe
                            [    1.219411] Bluetooth: HCI UART driver ver 2.3
                            [    1.224381] Bluetooth: HCI UART protocol H4 registered
                            [    1.230132] Bluetooth: HCI UART protocol BCSP registered
                            [    1.236052] Bluetooth: HCI UART protocol (null) registered
                            [    1.242176] Bluetooth: HCI Realtek H5 protocol initialized
                            [    1.249722] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pc not found, using dummy regulator
                            [    1.260910] sunxi-mmc 4022000.sdmmc: SD/MMC/SDIO Host Controller Driver(v4.22 2021-12-20 15:40)
                            [    1.270826] sunxi-mmc 4022000.sdmmc: ***ctl-spec-caps*** 308
                            [    1.277195] sunxi-mmc 4022000.sdmmc: No vmmc regulator found
                            [    1.283527] sunxi-mmc 4022000.sdmmc: No vqmmc regulator found
                            [    1.289954] sunxi-mmc 4022000.sdmmc: No vdmmc regulator found
                            [    1.296359] sunxi-mmc 4022000.sdmmc: No vd33sw regulator found
                            [    1.302873] sunxi-mmc 4022000.sdmmc: No vd18sw regulator found
                            [    1.309381] sunxi-mmc 4022000.sdmmc: No vq33sw regulator found
                            [    1.315895] sunxi-mmc 4022000.sdmmc: No vq18sw regulator found
                            [    1.322450] sunxi-mmc 4022000.sdmmc: Cann't get pin bias hs pinstate,check if needed
                            [    1.331891] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 0Hz bm PP pm UP vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.355582] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.379760] sunxi-mmc 4022000.sdmmc: detmode:alway in(non removable)
                            [    1.386864] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.399545] sunxi-mmc 4020000.sdmmc: SD/MMC/SDIO Host Controller Driver(v4.22 2021-12-20 15:40)
                            [    1.401471] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.409459] sunxi-mmc 4020000.sdmmc: ***ctl-spec-caps*** 8
                            [    1.422177] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.426970] sunxi-mmc 4020000.sdmmc: No vmmc regulator found
                            [    1.444805] sunxi-mmc 4020000.sdmmc: No vqmmc regulator found
                            [    1.451222] sunxi-mmc 4020000.sdmmc: No vdmmc regulator found
                            [    1.457627] sunxi-mmc 4020000.sdmmc: No vd33sw regulator found
                            [    1.464152] sunxi-mmc 4020000.sdmmc: No vd18sw regulator found
                            [    1.464594] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.470666] sunxi-mmc 4020000.sdmmc: No vq33sw regulator found
                            [    1.470672] sunxi-mmc 4020000.sdmmc: No vq18sw regulator found
                            [    1.482289] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.489147] sunxi-mmc 4020000.sdmmc: Got CD GPIO
                            [    1.498271] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm OD pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.523957] sunxi-mmc 4020000.sdmmc: sdc set ios:clk 0Hz bm PP pm UP vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.535074] sunxi-mmc 4020000.sdmmc: no vqmmc,Check if there is regulator
                            [    1.538929] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.555182] sunxi-mmc 4020000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.566564] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
                            [    1.576457] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
                            [    1.579543] sunxi-mmc 4020000.sdmmc: detmode:gpio irq
                            [    1.586190] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
                            [    1.591848] sunxi-mmc 4020000.sdmmc: sdc set ios:clk 0Hz bm PP pm OFF vdd 0 width 1 timing LEGACY(SDR12) dt B
                            [    1.601536] sunxi-mmc 4022000.sdmmc: avoid to switch power_off_notification to POWERED_ON(0x01)
                            [    1.613112] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pg not found, using dummy regulator
                            [    1.622681] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing MMC-HS(SDR20) dt B
                            [    1.633572] sunxi-mmc 4021000.sdmmc: SD/MMC/SDIO Host Controller Driver(v4.22 2021-12-20 15:40)
                            [    1.645285] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 1 timing MMC-HS(SDR20) dt B
                            [    1.654762] sunxi-mmc 4021000.sdmmc: ***ctl-spec-caps*** 8
                            [    1.666549] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 4 timing MMC-HS(SDR20) dt B
                            [    1.672482] sunxi-mmc 4021000.sdmmc: No vmmc regulator found
                            [    1.684415] sunxi-mmc 4022000.sdmmc: sdc set ios:clk 50000000Hz bm PP pm ON vdd 21 width 4 timing MMC-DDR52 dt B
                            [    1.690522] sunxi-mmc 4021000.sdmmc: No vqmmc regulator found
                            [    1.690527] sunxi-mmc 4021000.sdmmc: No vdmmc regulator found
                            [    1.690534] sunxi-mmc 4021000.sdmmc: No vd33sw regulator found
                            [    1.702072] mmc0: new DDR MMC card at address 0001
                            [    1.708284] sunxi-mmc 4021000.sdmmc: No vd18sw regulator found
                            [    1.708292] sunxi-mmc 4021000.sdmmc: No vq33sw regulator found
                            [    1.715679] mmcblk0: mmc0:0001 4FTE4R 3.64 GiB 
                            [    1.721249] sunxi-mmc 4021000.sdmmc: No vq18sw regulator found
                            [    1.726849] mmcblk0rpmb: mmc0:0001 4FTE4R partition 3 512 KiB, chardev (247:0)
                            [    1.733136] sunxi-mmc 4021000.sdmmc: Cann't get pin bias hs pinstate,check if needed
                            [    1.746127]  mmcblk0: p1 p2 p3 p4 p5 p6 p7 p8
                            [    1.773500] sunxi-mmc 4021000.sdmmc: sdc set ios:clk 0Hz bm PP pm UP vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.784638] sunxi-mmc 4021000.sdmmc: no vqmmc,Check if there is regulator
                            [    1.804764] sunxi-mmc 4021000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.828936] sunxi-mmc 4021000.sdmmc: detmode:manually by software
                            [    1.836047] sunxi-mmc 4021000.sdmmc: smc 2 p1 err, cmd 52, RE !!
                            [    1.836357] exFAT: Version 1.3.0
                            [    1.846646] sunxi-mmc 4021000.sdmmc: smc 2 p1 err, cmd 52, RE !!
                            [    1.853377] sunxi-mmc 4021000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.865528] NET: Registered protocol family 10
                            [    1.871414] Segment Routing with IPv6
                            [    1.875614] NET: Registered protocol family 17
                            [    1.880699] NET: Registered protocol family 15
                            [    1.885759] can: controller area network core (rev 20170425 abi 9)
                            [    1.892756] NET: Registered protocol family 29
                            [    1.897740] sunxi-mmc 4021000.sdmmc: sdc set ios:clk 400000Hz bm PP pm ON vdd 21 width 1 timing LEGACY(SDR12) dt B
                            [    1.899658] can: raw protocol (rev 20170425)
                            [    1.914065] sunxi-mmc 4021000.sdmmc: smc 2 p1 err, cmd 5, RE !!
                            [    1.920694] sunxi-mmc 4021000.sdmmc: smc 2 p1 err, cmd 5, RE !!
                            [    1.927307] sunxi-mmc 4021000.sdmmc: smc 2 p1 err, cmd 5, RE !!
                            [    1.933936] sunxi-mmc 4021000.sdmmc: smc 2 p1 err, cmd 5, RE !!
                            [    1.933963] sunxi-mmc 4021000.sdmmc: sdc set ios:clk 0Hz bm PP pm OFF vdd 0 width 1 timing LEGACY(SDR12) dt B
                            [    1.940698] Bluetooth: RFCOMM TTY layer initialized
                            [    1.957102] Bluetooth: RFCOMM socket layer initialized
                            [    1.962874] Bluetooth: RFCOMM ver 1.11
                            [    1.967671] Registering SWP/SWPB emulation handler
                            [    1.987180] sunxi-i2c sunxi-i2c2: sunxi-i2c2 supply twi not found, using dummy regulator
                            [    1.997141] sunxi-i2c sunxi-i2c2: probe success
                            [    2.003092] sunxi udc is no enable
                            [    2.007224] get ehci0-controller wakeup-source is fail.
                            [    2.013104] sunxi ehci0-controller is no enable
                            [    2.018157] sunxi-ehci 4101000.ehci0-controller: init_sunxi_hci is fail
                            [    2.025575] sunxi-ehci: probe of 4101000.ehci0-controller failed with error -1
                            [    2.033909] get ohci0-controller wakeup-source is fail.
                            [    2.039786] sunxi ohci0-controller is no enable
                            [    2.044840] sunxi-ohci 4101400.ohci0-controller: init_sunxi_hci is fail
                            [    2.052248] sunxi-ohci: probe of 4101400.ohci0-controller failed with error -1
                            [    2.063396] clk: Not disabling unused clocks
                            [    2.068167] ALSA device list:
                            [    2.071684] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
                            [    2.081332]   No soundcards found.
                            [    2.081359] alloc_fd: slot 0 not NULL!
                            [    2.085154] cfg80211: failed to load regulatory.db
                            [    2.094907] Waiting 2 sec before mounting root device...
                            [    4.121191] random: fast init done
                            [    4.126824] VFS: Mounted root (squashfs filesystem) readonly on device 179:5.
                            [    4.136498] devtmpfs: mounted
                            [    4.140960] Freeing unused kernel memory: 1024K
                            [    4.159792] Run /pseudo_init as init process
                            mount: mounting none on /dev failed: Resource busy
                            [    4.418421] EXT4-fs: Warning: mounting with data=journal disables delayed allocation and O_DIRECT support!
                            [    4.431816] EXT4-fs (mmcblk0p7): mounted filesystem with journalled data mode. Opts: data=journal
                            can't run '/etc/preinit': No such file or directory
                            mount: mounting proc on /proc failed: Resource busy
                            mount: mounting tmpfs on /run failed: No such file or directory
                            hostname: can't open '/etc/hostname': No such file or directory
                            ------run rc.preboot file-----
                            [    4.586990] EXT4-fs (mmcblk0p8): mounted filesystem with ordered data mode. Opts: (null)
                            ------run rc.modules file-----
                            insmod: can't insert '/lib/modules/5.4.61/usb-storage.ko': No such file or directory
                            [    4.611946] sunxi_gpadc_init,2151, success
                            [    4.616831] sunxi_gpadc_setup: get channel scan data failed
                            [    4.623430] input: sunxi-gpadc0 as /devices/virtual/input/input0
                            insmod: can't insert '/lib/modules/5.4.61/8723ds.ko': Operation not permitted
                            [    9.173522] random: wpa_supplicant: uninitialized urandom read (3 bytes read)
                            [    9.181533] random: wpa_supplicant: uninitialized urandom read (1024 bytes read)
                            Successfully initialized wpa_supplicant
                            Could not read interface wlan0 flags: No such device
                            nl80211: Driver does not support authentication/association or connect commands
                            nl80211: deinit ifname=wlan0 disabled_11b_rates=0
                            Could not read interface wlan0 flags: No such device
                            wlan0: Failed to initialize driver interface
                            ------run rc.final file-----
                            Trying to connect to SWUpdate...
                            mount: mounting /dev/mmcblk0p1 on /mnt/extsd failed: No such file or directory
                            
                            
                            BusyBox v1.27.2 () built-in shell (ash)
                            
                            ------run profile file-----
                             _____  _              __     _
                            |_   _||_| ___  _ _   |  |   |_| ___  _ _  _ _
                              | |   _ |   ||   |  |  |__ | ||   || | ||_'_|
                              | |  | || | || _ |  |_____||_||_|_||___||_,_|
                              |_|  |_||_|_||_|_|  Tina is Based on OpenWrt!
                             ----------------------------------------------
                             Tina Linux (Neptune, 5C1C9C53)
                             ----------------------------------------------
                            nodev	debugfs
                            [    9.347500] get ctp_name is fail, -22
                            [    9.351865] get ctp_power is fail, -22
                            [    9.356191] get ctp_power_ldo_vol is fail, -22
                            [    9.361883] sunxi_ctp_startup: ctp_power_io is invalid.
                            [    9.367829] get ctp_gesture_wakeup fail, no gesture wakeup
                            [    9.374269] gt9xxnew_ts 2-005d: 2-005d supply ctp not found, using dummy regulator
                            [    9.379695] file system registered
                            swu_param: ####
                            swu_software: ####
                            swu_mode: ####
                            no swupdate_cmd to run, wait for next swupdate
                            sh: write error: No such device
                            [    9.420072] read descriptors
                            [    9.423300] read strings
                            [    9.545816] sunxi-i2c sunxi-i2c2: drv-mode: dma read data end
                            [    9.579879] input: gt9xxnew_ts as /devices/virtual/input/input1
                            [    9.639084] sunxi_can 2504000.can can0: setting BITTIMING=0x001c000b
                            [    9.646388] IPv6: ADDRCONF(NETDEV_CHANGE): can0: link becomes ready
                            root@TinaLinux:/# [   16.193296] random: crng init done
                            
                            root@TinaLinux:/# 
                            root@TinaLinux:/# 
                            root@TinaLinux:/# cansend can0 123#1122334455667788
                            interface = can0, family = 29, type = 3, proto = 1[   30.130429] sunxi_can 2504000.can can0: error warning interrupt
                            [   30.141054] sunxi_can 2504000.can can0: bus error interrupt
                            [   30.147269] sunxi_can 2504000.can can0: New error state: 1
                            
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                              msh410278586 LV 5 @msh410278586 last edited by

                              @msh410278586 已经调通了,can芯片的电压不正常,正常后就没问题了。

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                                one001 LV 4 @liukia last edited by

                                @liukia 你好,我是按照你方法配置can的,ifconfig里面有can0和can1,但是使用ifconfig can0 up就会报错,似乎跟波特率相关,难道我还有其他的配置要做吗
                                fb413b6f-b63e-4320-ad23-3468db1e9c1b-image.png

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                                  xiongxinjian LV 3 last edited by

                                  你好!200K的波特率有没有测试过?我现在用创龙的开发板测试,200K的收发都不正常,发送会提示BUS-OFF。100K,500K则工作正常。

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                                    a892755772 LV 5 @liukia last edited by

                                    @liukia 你好 我在《T113-S3_Datasheet_V1.5.pdf》与 《T113-S3_User_Manual_V1.2.pdf》找不到相关的CAN 寄存器说明,请问你是哪里查到的啊?

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                                    • Moved from MR Series by  xiaowenge xiaowenge 
                                    • Referenced by  W wjp2547532 
                                    • Q
                                      qqqlb LV 6 last edited by qinlinbin

                                      大佬,想问一下,你有测试过80k以下波特率的吗?我试了一下,会报这个错误。
                                      ip link set can0 type can bitrate 50000
                                      sunxi_can 2504000.can can0: bitrate error 8589934.5% too high。你有遇到过吗?

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                                        zH834773979 LV 2 @msh410278586 last edited by

                                        @msh410278586 内核需要进行什么设置吗?用的是不是百闻网提供的tina?

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                                          caoniu LV 2 last edited by

                                          你好,我的不晓得为啥ifconfig -a 都没有can显示出来,用的TINA配置的

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                                            mysteryli LV 7 @qinlinbin last edited by

                                            @qinlinbin 在 T113-s3 CAN linux 下已调通 中说:

                                            大佬,想问一下,你有测试过80k以下波特率的吗?我试了一下,会报这个错误。
                                            ip link set can0 type can bitrate 50000
                                            sunxi_can 2504000.can can0: bitrate error 8589934.5% too high。你有遇到过吗?

                                            看起来是驱动不支持这么低波特率?

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                                            • radxiaohe
                                              radxiaohe LV 4 last edited by

                                              感谢博主的分享,已在T113下把CAN调通,谢谢👍
                                              IMG-20240517153738685.png

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                                                Zhengjb963 LV 3 last edited by

                                                我来补一下,不让更多人浪费时间;
                                                在 sun8iw20-ccu.h 添加
                                                #define CLK_BUS_CAN0 73
                                                #define CLK_BUS_CAN1 74

                                                #define RST_BUS_CAN0 28
                                                #define RST_BUS_CAN1 29

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                                                  xlq123 LV 3 last edited by

                                                  This post is deleted!
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                                                    allbluecom LV 1 last edited by

                                                    今天也要调这个CANBUS,按照步骤写好后,ip link set can0 up,可以看到 can0 ready。
                                                    但是,一调用cansend can0 123#11223344556677,就不行,跳了一个中断错误。
                                                    大佬给看看,什么情况?!微信图片_20250331174230.jpg

                                                    Z 2 Replies Last reply Reply Quote Share 0
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                                                      z15612417860 LV 4 @allbluecom last edited by

                                                      @allbluecom 我遇到了同样的错误,请问解决了吗?

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                                                        z15612417860 LV 4 @allbluecom last edited by

                                                        @allbluecom 我遇到了同样的错误,请问解决了吗?是怎么解决的呀

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                                                          z15612417860 LV 4 @msh410278586 last edited by

                                                          @msh410278586n您好,can的问题您解决了吗

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