最近调试imx6的屏幕显示,笔记记录于此. 官方文档关于uboot参数的介绍: sin和dul参数已经测试过,sep和spl还没有验证成功. 1 单屏显示 说明:输入命令并按确定键, 观察系统启动过程中显示屏的显示内容,即可看到 Linux Logo. 1.1 LVDS1 setenv bootargs console=ttymxc0,115200 ip=none root=/dev/mmcblk0p1 rootwait video=mxcfb0:dev=ldb,LDB-XGA,if=RGB66…

发现个USB ID站点,对于做设备管理识别的小伙伴特别实用 http://www.linux-usb.org/usb.ids 附录: # # List of USB ID's # # Maintained by Stephen J. Gowdy <linux.usb.ids@gmail.com> # If you have any new entries, please submit them via # http://www.linux-usb.org/usb-ids.html # or s…

imx6 kernel中使用18bit的lcd,uboot中bootargs参数bpp=32,lcd才能够正常显示. "bootargs=console=ttymxc0,115200 init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:off video=mxcfb2:off fbmem=40M vmalloc=400M androidboot.console=ttymxc0 androidboot.hardware=freescale\0&q…

本文记录imx6 uboot中关于lcd初始化的过程. uboot中相关的文件: cpu/arm_cortexa8/start.S lib_arm/board.c board/freescale/mx6q_sabresd/mx6q_sabresd.c common/stdio.c common/lcd.c drivers/video/ipu_common.c /* 汇编调用C语言 */ ./cpu/arm_cortexa8/start.S: ldr pc, _start_armboot @ ju…

查看imx6 kernel中lvds设备和驱动的初始化过程. 相关文档: arm/arm/mach-mx6/board-mx6q_sabresd.c kernel/drivers/video/mxc/ldb.c 设备初始化 arm/arm/mach-mx6/board-mx6q_sabresd.c MACHINE_START(MX6Q_SABRESD, "Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board") /* Maintainer:…

/*********************************************************************************** * I.MX6 U-boot lvds display hacking * 声明: * 本文主要是为了跟踪I.MX6中的U-boot中显示部分代码,查看是否支持24bit显示. * * 2015-10-8 晴 深圳 南山平山村 曾剑锋 ***********************************************…

imx6dl需要支持lcd接口的屏,imx6dl的datasheet并没有明确的说明lcd相关的配置,只在Display Content Integrity Checker (DCIC)一章中介绍.本文记录imx6支持lcd的方法. 参考链接 http://developer.toradex.com/knowledge-base/display-output-resolution-and-timings-linux https://community.nxp.com/thread/307613…

分析imx6 framebuffer设备和驱动的注册过程. Tony Liu, 2016-8-31, Shenzhen 相关文件: arch/arm/mach-mx6/board-mx6q_sabresd.c kernel/video/mxc/mxc_ipuv3_fb.c mm/memblock.c | drivers/video/fbmem.c | 设备注册 MACHINE_START(MX6Q_SABRESD, "Freescale i.MX 6Quad/DualLite/Solo Sabr…

 Change default resolution on BeagleBone modesetting vs fbdev digiteltlc May 7th, 2014, 03:28 PM Hi I'm running a BeagleBone with a 5,7" LCD Touchscreen with a native resolution of 640x480 However, the system recognizes monitor as a LCD7 Cape with 80…

跟踪uboot代码,了解imx6 splash image的生成过程. 涉及文件: ./cpu/arm_cortexa8/start.S ./board/freescale/mx6q_sabresd/mx6q_sabresd.c ./board/freescale/commom/fsl_bmp_reversed_600x400.c /* 汇编调用C语言 */ ./cpu/arm_cortexa8/start.S: ldr pc, _start_armboot @ jump to C code -…