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因为买的飞x家的开发板，但是他们家的uboot是不开源的，所以想着从全志的公版SDK中的u-boot-2018试着将uboot驱动起来替换掉他家的uboot。
核心板用的是江波龙的EMMC（8G）和力积的A3T4GF40BBF（四片，共2GB）。
烧飞x的固件，boot0日志如下：
[87]HELLO! BOOT0 is starting!
[90]BOOT0 commit : 75fd24e
[93]set pll start
[95]periph0 has been enabled
[98]set pll end
[101]PMU: AXP858
[106]dram return write ok
[108]board init ok
[110]debug:rtc h-m-s value:0x32325
[114]DRAM BOOT DRIVE INFO: V0.648
[117]the chip id is 0x7c00
[120]chip id check OK
[123]DRAM_VCC set to 1500 mv
[126]DRAM CLK =672 MHZ
[128]DRAM Type =3 (3:DDR3,4:DDR4,7:LPDDR3,8:LPDDR4)
[137]Actual DRAM SIZE =2048 M
[140]DRAM SIZE =2048 MBytes, para1 = 30fa, para2 = 8001000, dram_tpr13 = 6041
[153]DRAM simple test OK.
[155]rtc standby flag is 0x0, super standby flag is 0x0
[161]dram size =2048
[164]Use rtc to store dram tuning para
[168]card no is 2
[169]sdcard 2 line count 8
[172][mmc]: mmc driver ver 2020-07-21-202106151039
[183][mmc]: Wrong media type 0x0, but host is sdc2, try mmc first
[189][mmc]: Try MMC card 2
[213][mmc]: RMCA OK!
[215][mmc]: bias 4
[219][mmc]: MMC 5.1
[221][mmc]: HSSDR52/SDR25 8 bit
[224][mmc]: 50000000 Hz
[227][mmc]: 7456 MB
[229][mmc]: SD/MMC 2 init OK!!!
[263]Loading boot-pkg Succeed(index=0).
[266]Entry_name = u-boot
[276]Entry_name = monitor
[280]Entry_name = dtb
[283]tunning data addr:0x4a0003e8
[287]Jump to second Boot.
NOTICE: BL3-1: v1.0(debug):be96482
NOTICE: BL3-1: Built : 18:32:32, 2021-04-21
NOTICE: BL3-1 commit: 8
NOTICE: cpuidle init version V2.0
ERROR: Error initializing runtime service tspd_fast
NOTICE: BL3-1: Preparing for EL3 exit to normal world
NOTICE: BL3-1: Next image address = 0x4a000000
▒OTICE: BL3-1: Next image spsr = 0x1d3

U-Boot 2018.05 (Jul 25 2024 - 12:28:34 +0800) Allwinner Technology

现在直接烧写evb板子的固件，日志如下：
[118]HELLO! BOOT0 is starting!
[121]BOOT0 commit : c52ec7a
[124]set pll start
[127]periph0 has been enabled
[130]set pll end
[132]PMU: AXP858
[142]vaild para:1 select dram para0
[146]board init ok

[148]DRAM BOOT DRIVE INFO: V0.651
[151]the chip id is 0x7c00
[154]chip id check OK
[156]DRAM_VCC set to 1500 mv
[159]DRAM CLK =672 MHZ
[162]DRAM Type =3 (3:DDR3,4:DDR4,7:LPDDR3,8:LPDDR4)
[170]Actual DRAM SIZE =128 M
[173]DRAM SIZE =128 MBytes, para1 = 20f7, para2 = 801000, dram_tpr13 = 6041
[186]DRAM simple test OK.
[189]rtc standby flag is 0x0, super standby flag is 0x0
[194]dram size =128
[197]Use rtc to store dram tuning para
[201]card no is 2
[203]sdcard 2 line count 8
[206][mmc]: mmc driver ver 2020-07-21-202106151039
[216][mmc]: Wrong media type 0x0, but host is sdc2, try mmc first
[222][mmc]: Try MMC card 2
[247][mmc]: RMCA OK!
[249][mmc]: bias 4
[253][mmc]: MMC 5.1
[255][mmc]: HSSDR52/SDR25 8 bit
[258][mmc]: 50000000 Hz
[260][mmc]: 7456 MB
[262][mmc]: SD/MMC 2 init OK!!!
[294]Loading boot-pkg Succeed(index=0).
[298]Entry_name = u-boot
[307]Entry_name = monitor
[311]Entry_name = dtb
[315]tunning data addr:0x4a0003e8
[318]Jump to second Boot.
NOTICE: BL3-1: v1.0(debug):f0130ea
NOTICE: BL3-1: Built : 10:23:13, 2022-04-14
NOTICE: BL3-1 commit: 8
NOTICE: cpuidle init version V2.0
ERROR: Error initializing runtime service tspd_fast
NOTICE: BL3-1: Preparing for EL3 exit to normal world
NOTICE: BL3-1: Next image address = 0x4a000000
▒OTICE: BL3-1: Next image spsr = 0x1d3

从日志可以看出，evb的固件DRAM SIZE识别到的有问题，所以刷机之后无法启动。
请教各位大神，这个要怎么修改呢？

需求：全志T507，把PI12、PI13复用为PWM2、PWM3，想要让PWM2、3互补输出。

T507手册上支持pwm互补输出

看源码需要在设备树里面配置"bind_pwm"和"dead_time"，获取死区时间和“互补输出绑定的pwm？？”，这里的bind_pwm不是很理解。

static int sunxi_pwm_get_config(struct platform_device *pdev, struct sunxi_pwm_config *config)
{
	struct device_node *np = pdev->dev.of_node;
	int ret = 0;

	/* read register config */
	pr_info("sunxi_pwm_get_config %s\n", np->name);

	ret = of_property_read_u32(np, "bind_pwm", &config->bind_pwm);
	if (ret < 0) {
		/*if there is no bind pwm,set 255, dual pwm invalid!*/
		config->bind_pwm = 255;
		ret = 0;
	}

	ret = of_property_read_u32(np, "dead_time", &config->dead_time);
	if (ret < 0) {
		/*if there is  bind pwm, but not set dead time,set bind pwm 255,dual pwm invalid!*/
		config->bind_pwm = 255;
		ret = 0;
	}

	pr_info("bind_pwm=%d,dead_time=%d\n", config->bind_pwm, config->dead_time);
	ret = of_property_read_u32(np, "clk_bypass_output", &config->clk_bypass_output);
	if (ret < 0) {
		/*if use pwm as the internal clock source!*/
		config->clk_bypass_output = 0;
		ret = 0;
	}

	of_node_put(np);

	return ret;
}

static int sunxi_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
		int duty_ns, int period_ns)
{
	int bind_num;

	struct sunxi_pwm_chip *pc = to_sunxi_pwm_chip(chip);

        //这里可以根据bind_num选择是否互补输出
	bind_num = pc->config[pwm->pwm - chip->base].bind_pwm;
	if (bind_num == 255)
		sunxi_pwm_config_single(chip, pwm, duty_ns, period_ns);
	else
		sunxi_pwm_config_dual(chip, pwm, duty_ns, period_ns, bind_num);

	return 0;
}

但是按照源码里面增加“bind_pwm”和“dead_time”

		pwm2: pwm2@0300a000 {
			pinctrl-names = "active", "sleep";
			pinctrl-0 = <&pwm2_pin_a>;
			pinctrl-1 = <&pwm2_pin_b>;
			bind_pwm = 2;
			dead_time = 1000;
			status = "okay";
		};

编译报错

Error: arch/arm64/boot/dts/sunxi/CII-Common.dtsi:543.15-16 syntax error
FATAL ERROR: Unable to parse input tree
make[2]: *** [scripts/Makefile.lib:313: arch/arm64/boot/dts/sunxi/board.dtb] Error 1
make[1]: *** [scripts/Makefile.build:648: arch/arm64/boot/dts/sunxi] Error 2
make: *** [arch/arm64/Makefile:153: dtbs] Error 2
make: *** Waiting for unfinished jobs....
  CHK     kernel/config_data.h
ERROR: build kernel Failed
INFO: mkkernel failed

请问怎么配置才能让pwm互补输出？

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怎么拉取公版SDK？