关于linux下SPI驱动的问题

mysteryli · 2023-04-11 22:42:07

各位大佬好，本人在V851S平台调试驱动一块ST7789V的屏幕，发现SPI驱动无法挂载，跟踪调试发现fbtft-core.c中的fbtft_probe_common都没有得到调用，设备树和内核配置已打开，代码贴图如下
tips：另外还有一个线索就是之前有一块MIPI的屏幕，初始化代码也是正确的，同样无法点亮，大佬docker里面的代码可以点亮，由于内核代码量较大，实在无法比较查分，仅对比了Driver文件夹和设备树，发现是相同的

QQ截图20230411224447.jpg
修改的设备树是这个目录下的，不清楚是否正确

...
&spi1 {
	clock-frequency = <10000000>;
	pinctrl-0 = <&spi1_pins_a &spi1_pins_b>;
	pinctrl-1 = <&spi1_pins_c>;
	pinctrl-names = "default", "sleep";
	spi_slave_mode = <0>;
	spi_dbi_enable = <1>;
	spi1_cs_number = <1>;
	status = "okay";

	st7789v@0 {
		status = "okay";
		compatible = "sitronix,st7789v";
		reg = <0>;
		spi-max-frequency =<10000000>;        //SPI时钟32M
		rotate =<0>;                    //屏幕旋转90度
		spi-cpol;
		spi-cpha;
		rgb;                           //颜色格式RGB
		fps =<30>;                      //刷新30帧率
		buswidth =<8>;                   //总线宽度8
		reset-gpios=<&pio PD 5 1 0 1 0>;   //GPIOE4
		dc-gpios  =<&pio PD 6 1 0 1 0>;   //GPIOE5
		debug =<1>;                     //不开启调试
	};
};
...

...

static struct fbtft_display display = {
	.regwidth = 8,
	.width = 240,
	.height = 280,
	.gamma_num = 2,
	.gamma_len = 14,
	.gamma = DEFAULT_GAMMA,
	.fbtftops = {
		.init_display = init_display,
		.set_var = set_var,
		.set_gamma = set_gamma,
		.blank = blank,
	},
};

FBTFT_REGISTER_DRIVER(DRVNAME, "sitronix,st7789v", &display);

MODULE_ALIAS("spi:" DRVNAME);
MODULE_ALIAS("platform:" DRVNAME);
MODULE_ALIAS("spi:st7789v");
MODULE_ALIAS("platform:st7789v");

MODULE_DESCRIPTION("FB driver for the ST7789V LCD Controller");
MODULE_AUTHOR("Dennis Menschel");
MODULE_LICENSE("GPL");

QQ截图20230411224103.jpg

最近编辑记录 mysteryli (2023-04-11 22:45:58)

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关于linux下SPI驱动的问题

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