本篇內(nèi)容主要講解“uboot啟動時為什么默認選擇LCD屏幕顯示”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學(xué)習(xí)“uboot啟動時為什么默認選擇LCD屏幕顯示”吧!
成都創(chuàng)新互聯(lián)長期為千余家客戶提供的網(wǎng)站建設(shè)服務(wù)，團隊從業(yè)經(jīng)驗10年，關(guān)注不同地域、不同群體，并針對不同對象提供差異化的產(chǎn)品和服務(wù)；打造開放共贏平臺，與合作伙伴共同營造健康的互聯(lián)網(wǎng)生態(tài)環(huán)境。為右江企業(yè)提供專業(yè)的做網(wǎng)站、網(wǎng)站設(shè)計，右江網(wǎng)站改版等技術(shù)服務(wù)。擁有10余年豐富建站經(jīng)驗和眾多成功案例,為您定制開發(fā)。
uboot啟動時默認選擇LCD屏幕顯示
關(guān)于uboot啟動屏幕顯示問題困擾了我很久，想必大家也有類似這樣的問題，我思考良久，在電魚電子工作的這段時間終于搞明白這個問題，現(xiàn)在分享給大家：
修改/uboot/board/freescale/mx6sabresd/mx6sabresd.c文件，如下所示：
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);
修改完成后如下圖所示：
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);
到此，相信大家對“uboot啟動時為什么默認選擇LCD屏幕顯示”有了更深的了解，不妨來實際操作一番吧！這里是創(chuàng)新互聯(lián)網(wǎng)站，更多相關(guān)內(nèi)容可以進入相關(guān)頻道進行查詢，關(guān)注我們，繼續(xù)學(xué)習(xí)！
重慶分公司
重慶分公司
