topic Re: imx hdmi support in 3.14 kernel in i.MX Processors

imx hdmi support in 3.14 kernel

jaiganesh — Sat, 26 Apr 2014 09:22:29 GMT

Hi all,

Is there support for hdmi display for sabresd ( or sabrelite) in linux kernel 3.14? I have enabled drm hdmi support in kernel 3.14 configuration but still i cannot see anything on HDMI display. [ The fbset command shows all the clock values (hsync, vsync and pixel rate) as zero]

Re: imx hdmi support in 3.14 kernel

fabio_estevam — Sat, 26 Apr 2014 22:36:30 GMT

You should use this kernel, which is based on 3.15-rc1:

https://git.kernel.org/cgit/linux/kernel/git/shawnguo/linux.git/log/?h=for-next

It has HDMI support for sabresd since last week.

Regards,

Fabio Estevam

Re: imx hdmi support in 3.14 kernel

jaiganesh — Mon, 28 Apr 2014 09:48:39 GMT

Thanks Fabio. I tested the kernel (3.14-rc3) with the above patch for hdmi in sabresd and hdmi is working (though it is not working when the hdmi cable is connected when the system boots). Also I can see "lvds" display driver "ldb" is inserted in the dmesg, but no log for LCD display driver. Is there support for LCD display in the above kernel?

Re: imx hdmi support in 3.14 kernel

fabio_estevam — Mon, 28 Apr 2014 13:43:13 GMT

For parallel display to work you would need to add support for it in the dts file.

Take a look at arch/arm/boot/dts/imx53-qsb.dts for reference (Search for compatible = "fsl,imx-parallel-display";)

If it works for you, please send the patch for linux-arm-kernel list.