arm64: dts: rockchip: fix hdmi cec on rock-3a

HDMI CEC is configured to select HDMITX_CEC_M0 function of GPIO0_C7 by
default in rk356x.dtsi. On Radxa ROCK 3 Model A it is routed to
HDMITX_CEC_M1 according to board schematic [1].

Fix HDMI CEC by overriding pinctrl in hdmi node to select HDMITX_CEC_M1.

[1] https://dl.radxa.com/rock3/docs/hw/3a/ROCK-3A-V1.3-SCH.pdf

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Link: https://lore.kernel.org/r/20230110225547.1563119-3-jonas@kwiboo.se
[added pinctrl-names duplicate]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
index a1c5fdf7d68f17c8ba377bf5f89b603814cfb1e5..00d873a03cfee95a4f8f07df567abf8b9e31f1f9 100644 (file)
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -279,6 +279,8 @@
 &hdmi {
        avdd-0v9-supply = <&vdda0v9_image>;
        avdd-1v8-supply = <&vcca1v8_image>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&hdmitx_scl &hdmitx_sda &hdmitxm1_cec>;
        status = "okay";
 };