Unverified Commit 3047444d authored by Jernej Skrabec's avatar Jernej Skrabec Committed by Maxime Ripard
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arm64: dts: allwinner: a64: Add CEC clock to HDMI 



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: default avatarJernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: default avatarMaxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20211120073448.32480-2-jernej.skrabec@gmail.com
parent 725bc607

arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi

+2 −2
Original line number Diff line number Diff line
@@ -1220,8 +1220,8 @@ hdmi: hdmi@1ee0000 { 
			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>;