How to set the HDMI output 1920*1080p,my imx6q now is 1024*768p

[michaelhan]

How to modify the codes?

My android version is 6.0.1

[wuwenbing]

replace a display that supports 1080P

[Rita_Wang]

Hi michael,

If you want to set the HDMI display 1920*1080p, you can set the Kernel command line (bootargs) in the u-boot.

video=mxcfb1:dev=hdmi,1920x1080M@60,

Hope this can help you

Best Regards

Rita

[michaelhan]

这个设了，没用。

setenv bootargs console=ttymxc0,115200 androidboot.console=ttymxc0 consoleblank=0 vmalloc=256M init=/init video=mxcfb0:dev=ldb,bpp=32 video=mxcfb1:dev=hdmi,1920x1080M@60,bpp=32 video=mxcfb2:off video=mxcfb3:off androidboot.hardware=freescale cma=384M androidboot.selinux=disabled androidboot.dm_verity=disabled

而且我在/sys/class/graphics/fb0 查看modes

只有U:1024x768p-60

fb1 

只有U:240x320p-60

[Rita_Wang]

Hi michael,

你好，请问你这里板子是买的NXP官网的开发板还是自己参考我们开发板设计的？我看到你的uboot里内核参数设置了，你这里是要LVDS和HDMI同时显示么？

Best Regards

Rita

[michaelhan]

Rita,

买的官网板子，目前是只需要显示HDMI。

[Rita_Wang]

Hi michael,

只HDMI显示的话，你设置：

 video=mxcfb0:dev=hdmi,1920x1080M@60,bpp=32 video=mxcfb1:off
video=mxcfb2:off video=mxcfb3:off androidboot.hardware=freescale cma=384M

就可以了，你上面的设置是LVDS和HDMI同时显示的话，显示的分辨率是1024*768p这个的。HDMI单独显示是可以实现1080P的。你改一下再试试~~

Best Regards

Rita

[michaelhan · Accepted solution]

按这样修改

setenv bootargs console=ttymxc0,115200 androidboot.console=ttymxc0 consoleblank=0 vmalloc=256M init=/init video=mxcfb0:dev=hdmi,1920x1080M@60,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off androidboot.hardware=freescale cma=384M androidboot.selinux=disabled androidboot.dm_verity=disabled

后，实际物理size更小了，640x480

我看到fb0下也确实只有640x480p这个需要怎么去改，让fb0下有1920x1080p，我想是不是这样了才会支持？

root@sabresd_6dq:/ # wm size

Physical size: 640x480

root@sabresd_6dq:/ # cd /sys/class/graphics/f

fb0/ fb1/ fbcon/

root@sabresd_6dq:/ # cd /sys/class/graphics/fb0

root@sabresd_6dq:/sys/class/graphics/fb0 # cat m

mode modes

root@sabresd_6dq:/sys/class/graphics/fb0 # cat modes

V:640x480p-60

V:640x480p-60

root@sabresd_6dq:/sys/class/graphics/fb0 #

huiyun.han@fhsjdz.com

[Rita_Wang]

Hi michael,

I have tried it on my board. Runing the andorid6.0 BSP. It works well on my side. My u-boot kernal command lines settting are as follows:

When the board boot up, the Physical size: 1920x1080.

I think your problem is caused by your HDMI screen. You can have a check.

Have a nice day

Rita

[michaelhan]

Rita,

thanks，我换了一个支持1080p显示屏确实可以了。

我还有个问题，就是u-boot kernal command lines是烧录完成后启动板子时设置，但我想在build代码时就把这个编译进去需要修改哪里的代码？

[Rita_Wang]

Hello michael,

Android 6.0里面我还没有改过，不过以前老的版本的BSP里面我弄过，是可以的。

你可以参考一下。

Have a great day,
Rita

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[michaelhan]

ok,thanks

[Rita_Wang]

Hi michael,

If your problem have solved, could you help close this thread by click mark correct botton? Thanks.

If you have new questions you can create new thread in our community.
Have a great day,
Rita

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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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[Rita_Wang]

Hi michael,

Here which board are you using?

Have a nice day

Rita

[michaelhan]

Rita 你好，

我板子 imx 6 Series

主芯片看到是，MCIMX6Q6AVT10AD