linux-kernel - Re: [PATCH 0/2] dts: Add CEC clock to DW HDMI

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Message-Id: <163757205949.21212.12709413525294127905.b4-ty@cerno.tech>
Date:   Mon, 22 Nov 2021 10:07:41 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     mripard@...nel.org, wens@...e.org,
        Jernej Skrabec <jernej.skrabec@...il.com>
Cc:     Maxime Ripard <maxime@...no.tech>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH 0/2] dts: Add CEC clock to DW HDMI

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).

Thanks!
Maxime