Re: [PATCH 0/2] dts: Add CEC clock to DW HDMI
From: Maxime Ripard
Date: Mon Nov 22 2021 - 04:07:58 EST
On Sat, 20 Nov 2021 08:34:46 +0100, Jernej Skrabec wrote:
> Experimentation proved that CEC controller in H3-like DW-HDMI core
> depends on 32 kHz clock output from RTC. If board has external 32768 Hz
> crystal, HDMI CEC always work. However, if external crystal is missing
> and 32 kHz clock is generated by internal oscillator, CEC communication
> may or may not work, depending on accuracy. Changing internal oscillator
> prescaler can make CEC work.
Applied to sunxi/linux.git (sunxi/dt-for-5.17).