[PATCH v11 20/24] arm64: dts: rockchip: enable vop2 and hdmi tx on rock-3a

[Peter Geis]

On Tue, May 10, 2022 at 9:49 AM Piotr Oniszczuk
<piotr.oniszczuk at gmail.com> wrote:
>
>
>
> > Wiadomość napisana przez Peter Geis <pgwipeout at gmail.com> w dniu 10.05.2022, o godz. 14:08:
> >
> >
> > You are on the clk_rtc32k_frac which is a fractional divider that is
> > fed from the 24m clock. Your clock likely isn't the issue here. I'd
> > recommend setting up the cec-gpio node to validate your hardware
> > works.
>
> Peter,
>
> Here is what i done to verify my rock3-a HW:
>
> 1.download & burn on SD Radxa Ubuntu
> 2.boot and install v4l-utils
> 3.run cec-compliance -v -T. It fails with error -22
> 4.decompile Ubunntu DT.
> 5.Check what HDMITX_CEC_M hdmi uses. It was M0
> 6.Chenge to HDMITX_CEC_M1; compile dtb; install on sd
> 7.reboot.
> 8.cec-compliance -v -T gives all tests OK
> 9.cec-ctl --image-view-on -t0 turns-on my TV
>
> hope this proves my HW is ok?
>

That does show that the hardware works with the oem image. It does not
unfortunately prove if it works with your current dts. cec-gpio will
show if it's an issue with the cec controller or an external problem.