IC697MEM715
IC697MEM715
IC697MEM715
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wvga-rgb即之前在structdisplay_info_tconst displays[] 中添加的成员名字，其对应的分辨率是800*480.
b).Colibri iMX7
由于 iMX7SoC没有 IPU显示控制器，因此无法像 iMX6一样直接在 U-Boot中配置 panel参数。 Enhanced LCD Interface (eLCDIF)在iMX7上控制器液晶显示屏的输出，因此我们查看lcdif在U-Boot的驱动mxsfb.c。函数video_hw_init(void)实现lcdif的初始化，这里我们看到可以通过‘videomode’将显示参数传给 lcdif驱动。因此，在U-Boot进行如下配置
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setenvvideomode‘video=ctfb:x:800,y:480,depth:18,pclk:29851,le:89,ri:164,up:23,lo:10,hs:10,vs:10,sync:0,vmode:0’
saveenv
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同时配置背光亮度 PWM的输出。在colibri_imx7.c中，将 GPIO_PWM_A设置为0或者1.
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gpio_direction_output(GPIO_PWM_A, 1);
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然后重新编译 U-Boot，并用其更新Colibri iMX7模块上的U-Boot文件。重启后配置上面videomode参数。
按照上面的方法，可以实现在U-Boot中配置LCD输出，并显示你需要的图案，你可以参考这篇文章修改U-Boot启动时的图片。
c).Apalis iMX6
ToradexApalis系列模块定义了 LVDS，由于不同的SoC，Apalis系列模块采用不同的方式实现。Tegra 3 由于本身没有 LVDS功能，因此Apalis T30模块采用了额外的芯片输出。而iMX6和Tegra K1则原生支持 LVDS，可以直接使用芯片自身的控制器。下面在Apalis iMX6上以24bit SPWG LVDS输出为例进行说明。
修改apalis_imx6.c文件，你可能需要根据实际使用的屏幕调整下面像素格式和时序等参数，这些信息一般可以从屏幕的白皮书中获得。
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