From dd6c77864aa69ba1079998c590b552e35649d51b Mon Sep 17 00:00:00 2001 From: Andy Yan Date: Tue, 22 Apr 2025 15:04:45 +0800 Subject: [PATCH] Revert "ARM: dts: rockchip: drop grf reference from rk3036 hdmi" This reverts commit 1580ccb6ed9dc76b8ff3e2d8912e8215c8b0fa6d. The HSYNC/VSYNC polarity of rk3036 HDMI are controlled by GRF. Without the polarity configuration in GRF, it can be observed from the HDMI protocol analyzer that the H/V front/back timing output by RK3036 HDMI are currently not in line with the specifications. Signed-off-by: Andy Yan Tested-by: Heiko Stuebner #rk3036-kylin Link: https://lore.kernel.org/r/20250422070455.432666-7-andyshrk@163.com Signed-off-by: Heiko Stuebner --- arch/arm/boot/dts/rockchip/rk3036.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/rockchip/rk3036.dtsi b/arch/arm/boot/dts/rockchip/rk3036.dtsi index 2c0c0a9e4a64..f4292b586bc2 100644 --- a/arch/arm/boot/dts/rockchip/rk3036.dtsi +++ b/arch/arm/boot/dts/rockchip/rk3036.dtsi @@ -400,6 +400,7 @@ interrupts = ; clocks = <&cru PCLK_HDMI>, <&cru SCLK_LCDC>; clock-names = "pclk", "ref"; + rockchip,grf = <&grf>; pinctrl-names = "default"; pinctrl-0 = <&hdmi_ctl>; #sound-dai-cells = <0>; -- 2.50.1