第一次调试D1 MIPI DSI 发现一些奇怪问题，也不知道到底是哪里出了问题。。。
-
最近想给D1配一款MIPI显示屏，但是在调试过程中出现了一些很奇怪得现象，因为是第一次接触MIPI显示屏，所以有点不知所以。。
其中屏幕使用的是 ILI9806E DSI接口分辨率为480x800
目前认为主要是 屏幕时序不对导致的问题，但是屏厂能提供的资料非常有限，还是需要慢慢排查....
- 设备树节点定义
&lcd0 { lcd_used = <1>; lcd_driver_name = "tft08006"; lcd_backlight = <100>; lcd_if = <4>; lcd_x = <480>; lcd_y = <800>; lcd_width = <52>; lcd_height = <52>; lcd_dclk_freq = <25>; lcd_pwm_used = <1>; lcd_pwm_ch = <2>; lcd_pwm_freq = <1000>; lcd_pwm_pol = <0>; lcd_pwm_max_limit = <255>; lcd_hbp = <20>; lcd_ht = <835>; lcd_hspw = <10>; lcd_vbp = <20>; lcd_vt = <510>; lcd_vspw = <5>; lcd_dsi_if = <0>; lcd_dsi_lane = <2>; lcd_lvds_if = <0>; lcd_lvds_colordepth = <0>; lcd_lvds_mode = <0>; lcd_frm = <0>; lcd_hv_clk_phase = <0>; lcd_hv_sync_polarity= <0>; lcd_io_phase = <0x0000>; lcd_gamma_en = <0>; lcd_bright_curve_en = <0>; lcd_cmap_en = <0>; lcd_fsync_en = <0>; lcd_fsync_act_time = <1000>; lcd_fsync_dis_time = <1000>; lcd_fsync_pol = <0>; deu_mode = <0>; lcdgamma4iep = <22>; smart_color = <90>; lcd_gpio_0 = <&pio PG 13 GPIO_ACTIVE_HIGH>; pinctrl-0 = <&dsi4lane_pins_a>; pinctrl-1 = <&dsi4lane_pins_b>; };- 驱动示例定义
/* drivers/video/sunxi/disp2/disp/lcd/tft08006.c * * Copyright (c) 2021 Allwinnertech Co., Ltd. * * tft08006 panel driver * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include "tft08006.h" static void lcd_power_on(u32 sel); static void lcd_power_off(u32 sel); static void lcd_bl_open(u32 sel); static void lcd_bl_close(u32 sel); static void lcd_panel_init(u32 sel); static void lcd_panel_exit(u32 sel); #define panel_reset(sel, val) sunxi_lcd_gpio_set_value(sel, 0, val) static void lcd_cfg_panel_info(struct panel_extend_para *info) { u32 i = 0, j = 0; u32 items; u8 lcd_gamma_tbl[][2] = { {0, 0}, {15, 15}, {30, 30}, {45, 45}, {60, 60}, {75, 75}, {90, 90}, {105, 105}, {120, 120}, {135, 135}, {150, 150}, {165, 165}, {180, 180}, {195, 195}, {210, 210}, {225, 225}, {240, 240}, {255, 255}, }; u32 lcd_cmap_tbl[2][3][4] = { { {LCD_CMAP_G0, LCD_CMAP_B1, LCD_CMAP_G2, LCD_CMAP_B3}, {LCD_CMAP_B0, LCD_CMAP_R1, LCD_CMAP_B2, LCD_CMAP_R3}, {LCD_CMAP_R0, LCD_CMAP_G1, LCD_CMAP_R2, LCD_CMAP_G3}, }, { {LCD_CMAP_B3, LCD_CMAP_G2, LCD_CMAP_B1, LCD_CMAP_G0}, {LCD_CMAP_R3, LCD_CMAP_B2, LCD_CMAP_R1, LCD_CMAP_B0}, {LCD_CMAP_G3, LCD_CMAP_R2, LCD_CMAP_G1, LCD_CMAP_R0}, }, }; items = sizeof(lcd_gamma_tbl) / 2; for (i = 0; i < items - 1; i++) { u32 num = lcd_gamma_tbl[i + 1][0] - lcd_gamma_tbl[i][0]; for (j = 0; j < num; j++) { u32 value = 0; value = lcd_gamma_tbl[i][1] + ((lcd_gamma_tbl[i + 1][1] - lcd_gamma_tbl[i][1]) * j) / num; info->lcd_gamma_tbl[lcd_gamma_tbl[i][0] + j] = (value << 16) + (value << 8) + value; } } info->lcd_gamma_tbl[255] = (lcd_gamma_tbl[items - 1][1] << 16) + (lcd_gamma_tbl[items - 1][1] << 8) + lcd_gamma_tbl[items - 1][1]; memcpy(info->lcd_cmap_tbl, lcd_cmap_tbl, sizeof(lcd_cmap_tbl)); } static s32 lcd_open_flow(u32 sel) { LCD_OPEN_FUNC(sel, lcd_power_on, 10); LCD_OPEN_FUNC(sel, lcd_panel_init, 10); LCD_OPEN_FUNC(sel, sunxi_lcd_tcon_enable, 50); LCD_OPEN_FUNC(sel, lcd_bl_open, 0); return 0; } static s32 lcd_close_flow(u32 sel) { LCD_CLOSE_FUNC(sel, lcd_bl_close, 0); LCD_CLOSE_FUNC(sel, sunxi_lcd_tcon_disable, 0); LCD_CLOSE_FUNC(sel, lcd_panel_exit, 200); LCD_CLOSE_FUNC(sel, lcd_power_off, 500); return 0; } static void lcd_power_on(u32 sel) { panel_reset(sel, 1); sunxi_lcd_delay_ms(10); panel_reset(sel, 0); sunxi_lcd_delay_ms(5); panel_reset(sel, 1); sunxi_lcd_delay_ms(5); sunxi_lcd_pin_cfg(sel, 1); } static void lcd_power_off(u32 sel) { sunxi_lcd_pin_cfg(sel, 0); sunxi_lcd_delay_ms(20); panel_reset(sel, 0); sunxi_lcd_delay_ms(5); } static void lcd_bl_open(u32 sel) { sunxi_lcd_pwm_enable(sel); } static void lcd_bl_close(u32 sel) { sunxi_lcd_pwm_disable(sel); } #define REGFLAG_DELAY 0XFC #define REGFLAG_END_OF_TABLE 0xFD /* END OF REGISTERS MARKER */ struct LCM_setting_table { u8 cmd; u32 count; u8 para_list[32]; }; static struct LCM_setting_table lcm_tft08006_setting[] = { {0xFF, 3, {0x98, 0x81, 0x03} }, {0x01, 1, {0x00} }, {0x02, 1, {0x00} }, {0x03, 1, {0x53} }, {0x04, 1, {0x53} }, {0x05, 1, {0x13} }, {0x06, 1, {0x04} }, {0x07, 1, {0x02} }, {0x08, 1, {0x02} }, {0x09, 1, {0x00} }, {0x0a, 1, {0x00} }, {0x0b, 1, {0x00} }, {0x0c, 1, {0x00} }, {0x0d, 1, {0x00} }, {0x0e, 1, {0x00} }, {0x0f, 1, {0x00} }, {0x10, 1, {0x00} }, {0x11, 1, {0x00} }, {0x12, 1, {0x00} }, {0x13, 1, {0x00} }, {0x14, 1, {0x00} }, {0x15, 1, {0x00} }, {0x16, 1, {0x00} }, {0x17, 1, {0x00} }, {0x18, 1, {0x00} }, {0x19, 1, {0x00} }, {0x1a, 1, {0x00} }, {0x1b, 1, {0x00} }, {0x1c, 1, {0x00} }, {0x1d, 1, {0x00} }, {0x1e, 1, {0xc0} }, {0x1f, 1, {0x80} }, {0x20, 1, {0x02} }, {0x21, 1, {0x09} }, {0x22, 1, {0x00} }, {0x23, 1, {0x00} }, {0x24, 1, {0x00} }, {0x25, 1, {0x00} }, {0x26, 1, {0x00} }, {0x27, 1, {0x00} }, {0x28, 1, {0x55} }, {0x29, 1, {0x03} }, {0x2a, 1, {0x00} }, {0x2b, 1, {0x00} }, {0x2c, 1, {0x00} }, {0x2d, 1, {0x00} }, {0x2e, 1, {0x00} }, {0x2f, 1, {0x00} }, {0x30, 1, {0x00} }, {0x31, 1, {0x00} }, {0x32, 1, {0x00} }, {0x33, 1, {0x00} }, {0x34, 1, {0x00} }, {0x35, 1, {0x00} }, {0x36, 1, {0x00} }, {0x37, 1, {0x00} }, {0x38, 1, {0x3C} }, {0x39, 1, {0x00} }, {0x3a, 1, {0x00} }, {0x3b, 1, {0x00} }, {0x3c, 1, {0x00} }, {0x3d, 1, {0x00} }, {0x3e, 1, {0x00} }, {0x3f, 1, {0x00} }, {0x40, 1, {0x00} }, {0x41, 1, {0x00} }, {0x42, 1, {0x00} }, {0x43, 1, {0x00} }, {0x44, 1, {0x00} }, {0x50, 1, {0x01} }, {0x51, 1, {0x23} }, {0x52, 1, {0x45} }, {0x53, 1, {0x67} }, {0x54, 1, {0x89} }, {0x55, 1, {0xab} }, {0x56, 1, {0x01} }, {0x57, 1, {0x23} }, {0x58, 1, {0x45} }, {0x59, 1, {0x67} }, {0x5a, 1, {0x89} }, {0x5b, 1, {0xab} }, {0x5c, 1, {0xcd} }, {0x5d, 1, {0xef} }, {0x5e, 1, {0x01} }, {0x5f, 1, {0x08} }, {0x60, 1, {0x02} }, {0x61, 1, {0x02} }, {0x62, 1, {0x0A} }, {0x63, 1, {0x15} }, {0x64, 1, {0x14} }, {0x65, 1, {0x02} }, {0x66, 1, {0x11} }, {0x67, 1, {0x10} }, {0x68, 1, {0x02} }, {0x69, 1, {0x0F} }, {0x6a, 1, {0x0E} }, {0x6b, 1, {0x02} }, {0x6c, 1, {0x0D} }, {0x6d, 1, {0x0C} }, {0x6e, 1, {0x06} }, {0x6f, 1, {0x02} }, {0x70, 1, {0x02} }, {0x71, 1, {0x02} }, {0x72, 1, {0x02} }, {0x73, 1, {0x02} }, {0x74, 1, {0x02} }, {0x75, 1, {0x06} }, {0x76, 1, {0x02} }, {0x77, 1, {0x02} }, {0x78, 1, {0x0A} }, {0x79, 1, {0x15} }, {0x7a, 1, {0x14} }, {0x7b, 1, {0x02} }, {0x7c, 1, {0x10} }, {0x7d, 1, {0x11} }, {0x7e, 1, {0x02} }, {0x7f, 1, {0x0C} }, {0x80, 1, {0x0D} }, {0x81, 1, {0x02} }, {0x82, 1, {0x0E} }, {0x83, 1, {0x0F} }, {0x84, 1, {0x08} }, {0x85, 1, {0x02} }, {0x86, 1, {0x02} }, {0x87, 1, {0x02} }, {0x88, 1, {0x02} }, {0x89, 1, {0x02} }, {0x8A, 1, {0x02} }, {0xFF, 3, {0x98, 0x81, 0x04} }, // {0x2D, 1, {0xFF} }, //BIST // {0x2F, 1, {0x01} }, //BIST {0x6C, 1, {0x15} }, {0x6E, 1, {0x30} }, {0x6F, 1, {0x37} }, //3VSP 3VSN {0x8D, 1, {0x1F} }, {0x87, 1, {0xBA} }, {0x26, 1, {0x76} }, {0xB2, 1, {0xD1} }, {0xB5, 1, {0x07} }, {0x35, 1, {0x17} }, {0x33, 1, {0x14} }, {0x31, 1, {0x75} }, {0x3A, 1, {0x85} }, {0x3B, 1, {0x98} }, {0x38, 1, {0x01} }, {0x39, 1, {0x00} }, {0x7A, 1, {0x10} }, {0xFF, 3, {0x98, 0x81, 0x01} }, {0x22, 1, {0x0A} }, {0x31, 1, {0x00} }, {0x50, 1, {0xCF} }, //5.2V {0x51, 1, {0xCA} }, //-5.2V {0x53, 1, {0x45} }, //45 41 {0x55, 1, {0x48} }, {0x60, 1, {0x28} }, {0x2E, 1, {0xC8} }, {0x34, 1, {0x01} }, //{0x56, 1, {0x00} }, {0xA0, 1, {0x00} }, //VP255 Gamma P {0xA1, 1, {0x08} }, //VP251 {0xA2, 1, {0x18} }, //VP247 {0xA3, 1, {0x15} }, //VP243 {0xA4, 1, {0x19} }, //VP239 {0xA5, 1, {0x2D} }, //VP231 {0xA6, 1, {0x21} }, //VP219 {0xA7, 1, {0x23} }, //VP203 {0xA8, 1, {0x74} }, //VP175 {0xA9, 1, {0x1C} }, //VP144 {0xAA, 1, {0x26} }, //VP111 {0xAB, 1, {0x64} }, //VP80 {0xAC, 1, {0x1A} }, //VP52 {0xAD, 1, {0x1C} }, //VP36 {0xAE, 1, {0x50} }, //VP24 {0xAF, 1, {0x25} }, //VP16 {0xB0, 1, {0x2A} }, //VP12 {0xB1, 1, {0x4C} }, //VP8 {0xB2, 1, {0x5D} }, //VP4 {0xB3, 1, {0x23} }, //VP0 {0xC0, 1, {0x00} }, //VN255 GAMMA N {0xC1, 1, {0x1B} }, //VN251 {0xC2, 1, {0x27} }, //VN247 {0xC3, 1, {0x13} }, //VN243 {0xC4, 1, {0x16} }, //VN239 {0xC5, 1, {0x28} }, //VN231 {0xC6, 1, {0x1E} }, //VN219 {0xC7, 1, {0x20} }, //VN203 {0xC8, 1, {0x7D} }, //VN175 {0xC9, 1, {0x19} }, //VN144 {0xCA, 1, {0x27} }, //VN111 {0xCB, 1, {0x65} }, //VN80 {0xCC, 1, {0x1D} }, //VN52 {0xCD, 1, {0x1D} }, //VN36 {0xCE, 1, {0x52} }, //VN24 {0xCF, 1, {0x26} }, //VN16 {0xD0, 1, {0x2C} }, //VN12 {0xD1, 1, {0x4E} }, //VN8 {0xD2, 1, {0x59} }, //VN4 {0xD3, 1, {0x23} }, //VN0 //{0xFF, 3, {0x98, 0x81, 0x04} }, //{0x2F, 1, {0x01} }, {0xFF, 3, {0x98, 0x81, 0x00} }, {0x35, 1, {0x00} }, {0x11, 0, {}}, {REGFLAG_DELAY, REGFLAG_DELAY, {120}}, {0x29, 0, {}}, {REGFLAG_DELAY, REGFLAG_DELAY, {20}}, {REGFLAG_END_OF_TABLE, REGFLAG_END_OF_TABLE, {}} }; static void lcd_panel_init(u32 sel) { __u32 i; sunxi_lcd_dsi_clk_enable(sel); sunxi_lcd_delay_ms(20); for (i = 0;; i++) { if (lcm_tft08006_setting[i].count == REGFLAG_END_OF_TABLE) break; else if (lcm_tft08006_setting[i].count == REGFLAG_DELAY) { sunxi_lcd_delay_ms(lcm_tft08006_setting[i].para_list[0]); } else { dsi_gen_wr(sel, lcm_tft08006_setting[i].cmd, lcm_tft08006_setting[i].para_list, lcm_tft08006_setting[i].count); } /* break; */ } } static void lcd_panel_exit(u32 sel) { sunxi_lcd_dsi_dcs_write_0para(sel, 0x10); sunxi_lcd_delay_ms(80); sunxi_lcd_dsi_dcs_write_0para(sel, 0x28); sunxi_lcd_delay_ms(50); } /*sel: 0:lcd0; 1:lcd1*/ static s32 lcd_user_defined_func(u32 sel, u32 para1, u32 para2, u32 para3) { return 0; } struct __lcd_panel tft08006_panel = { /* panel driver name, must mach the name of * lcd_drv_name in sys_config.fex */ .name = "tft08006", .func = { .cfg_panel_info = lcd_cfg_panel_info, .cfg_open_flow = lcd_open_flow, .cfg_close_flow = lcd_close_flow, .lcd_user_defined_func = lcd_user_defined_func, }, }; -
把MIPI的时钟线用示波器测一下看看有没有输出
-
我前面驱动mipi屏也出现这个问题，后来发现是排线拔插次数多废了，换一根新排线就好了。
-
没遇到过，坐等结论。
-
gamma偏差太大，导致液晶“极化”
-
- 亮屏成功，这个时钟和时序真的是离谱，错一个都不行，试了两天，自己粗心误把HBP认为HeightBP，另外接下来我们将提供 带电容触摸版本 以及 不带电容触摸版本，可直接连接到 MangoPI MQ-Pro AW-OL NeZha公板，T113等版本，为大家提供一个高性价比的双LANE 480x800的MIPI屏模块。
- 亮屏成功，这个时钟和时序真的是离谱，错一个都不行，试了两天，自己粗心误把HBP认为HeightBP，另外接下来我们将提供 带电容触摸版本 以及 不带电容触摸版本，可直接连接到 MangoPI MQ-Pro AW-OL NeZha公板，T113等版本，为大家提供一个高性价比的双LANE 480x800的MIPI屏模块。
-
@allwinnertech 666
Copyright © 2024 深圳全志在线有限公司 粤ICP备2021084185号 粤公网安备44030502007680号