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uboot启动时默认选择LCD屏幕显示
在uboot启动时默认选择LCD屏幕显示这个问题我一直在想如何去实现，在经过不断地实验过后，我找到了解决办法，下面就分享给有需要的朋友们吧！ 修改/uboot/board/freescale/mx6sabresd/mx6sabresd.c文件，如图所示： 修改如下部分： struct display_info_t const displays[] = {{ .bus = -1, .addr = 0, .pixfmt = IPU_PIX_FMT_RGB24, .detect = NULL, .enable = enable_lvds, .mode = { .name = "Hannstar-XGA", .refresh = 60, .xres = 1920, .yres = 1080, .pixclock = 6734, .left_margin = 90, .right_margin = 50, .upper_margin = 30, .lower_margin = 6, .hsync_len = 24, .vsync_len = 3, .sync = FB_SYNC_EXT, .vmode = FB_VMODE_NONINTERLACED } }, { .bus = -1, .addr = 0, .pixfmt = IPU_PIX_FMT_RGB24, .detect = NULL, .enable = do_enable_hdmi, .mode = { .name = "HDMI", .refresh = 60, .xres = 640, .yres = 480, .pixclock = 39721, .left_margin = 48, .right_margin = 16, .upper_margin = 33, .lower_margin = 10, .hsync_len = 96, .vsync_len = 2, .sync = 0, .vmode = FB_VMODE_NONINTERLACED } }, { .bus = 0, .addr = 0, .pixfmt = IPU_PIX_FMT_RGB24, .detect = NULL, .enable = enable_rgb, .mode = { .name = "SEIKO-WVGA", .refresh = 60, .xres = 800, .yres = 480, .pixclock = 29850, .left_margin = 89, .right_margin = 164, .upper_margin = 23, .lower_margin = 10, .hsync_len = 10, .vsync_len = 10, .sync = 0, .vmode = FB_VMODE_NONINTERLACED } } }; size_t display_count =ARRAY_SIZE(displays); 修改完成后如下图所示： struct display_info_t const displays[] = {{ .bus = 0, .addr = 0, .pixfmt = IPU_PIX_FMT_RGB24, .detect = NULL, .enable = enable_rgb, .mode = { .name = "CLAA-WVGA", .refresh =57, .xres = 800, .yres = 480, .pixclock = 37037, .left_margin = 40, .right_margin = 60, .upper_margin = 10, .lower_margin = 10, .hsync_len = 20, .vsync_len = 10, .sync = 0, .vmode = FB_VMODE_NONINTERLACED } },{ .bus = -1, .addr = 0, .pixfmt = IPU_PIX_FMT_RGB666, .detect = NULL, .enable = enable_lvds, .mode = { .name = "Hannstar-XGA", .refresh = 60, .xres = 1024, .yres = 768, .pixclock = 15385, .left_margin = 220, .right_margin = 40, .upper_margin = 21, .lower_margin = 7, .hsync_len = 60, .vsync_len = 10, .sync = FB_SYNC_EXT, .vmode = FB_VMODE_NONINTERLACED } }, { .bus = -1, .addr = 0, .pixfmt = IPU_PIX_FMT_RGB24, .detect = NULL, .enable = do_enable_hdmi, .mode = { .name = "HDMI", .refresh = 60, .xres = 640, .yres = 480, .pixclock = 39721, .left_margin = 48, .right_margin = 16, .upper_margin = 33, .lower_margin = 10, .hsync_len = 96, .vsync_len = 2, .sync = 0, .vmode = FB_VMODE_NONINTERLACED } } }; size_t display_count =ARRAY_SIZE(displays);
这样就实现了我们的目的，被这个问题所困扰的朋友们可以去试试啦，希望能够帮助到大家！
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