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arm64: dts: allwinner: a64: Add CEC clock to HDMI

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Experimentation determined that HDMI CEC controller inside DW HDMI block
depends on 32k clock from RTC. If this clock is tampered with, HDMI CEC
communication starts or stops working, depending on situation.

SoC user manual doesn't say anything about CEC, so this was overlooked.
Fix this by adding dependency to RTC 32k clock.

Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20211120073448.32480-2-jernej.skrabec@gmail.com
This commit is contained in:
Jernej Skrabec 2021-11-20 08:34:47 +01:00 committed by Maxime Ripard
parent 725bc607aa
commit 3047444def
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GPG Key ID: E3EF0D6F671851C5
1 changed files with 2 additions and 2 deletions
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arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
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@ -1220,8 +1220,8 @@
reg-io-width = <1>;
interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_BUS_HDMI>, <&ccu CLK_HDMI_DDC>,
<&ccu CLK_HDMI>;
clock-names = "iahb", "isfr", "tmds";
<&ccu CLK_HDMI>, <&rtc 0>;
clock-names = "iahb", "isfr", "tmds", "cec";
resets = <&ccu RST_BUS_HDMI1>;
reset-names = "ctrl";
phys = <&hdmi_phy>;