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Revert "ARM: dts: rockchip: drop grf reference from rk3036 hdmi"

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This reverts commit 1580ccb6ed.

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 <andy.yan@rock-chips.com>
Tested-by: Heiko Stuebner <heiko@sntech.de> #rk3036-kylin
Link: https://lore.kernel.org/r/20250422070455.432666-7-andyshrk@163.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Andy Yan 2025-04-22 15:04:45 +08:00 committed by Heiko Stuebner
parent cdc602ad06
commit dd6c77864a
1 changed files with 1 additions and 0 deletions
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arch/arm/boot/dts/rockchip/rk3036.dtsi
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@ -400,6 +400,7 @@ hdmi: hdmi@20034000 {
interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
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>;