From 32a1671ff8e84f0dfff3a50d4b2091d25e91f5e2 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Wed, 4 Mar 2020 15:37:26 +0100 Subject: ARM: dts: exynos: Fix polarity of the LCD SPI bus on UniversalC210 board Recent changes in the SPI core and the SPI-GPIO driver revealed that the GPIO lines for the LD9040 LCD controller on the UniversalC210 board are defined incorrectly. Fix the polarity for those lines to match the old behavior and hardware requirements to fix LCD panel operation with recent kernels. Cc: # 5.0.x Signed-off-by: Marek Szyprowski Reviewed-by: Andrzej Hajda Signed-off-by: Krzysztof Kozlowski --- arch/arm/boot/dts/exynos4210-universal_c210.dts | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'arch/arm/boot/dts/exynos4210-universal_c210.dts') diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts b/arch/arm/boot/dts/exynos4210-universal_c210.dts index a1bdf7830a87..9dda6bdb9253 100644 --- a/arch/arm/boot/dts/exynos4210-universal_c210.dts +++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts @@ -115,7 +115,7 @@ gpio-sck = <&gpy3 1 GPIO_ACTIVE_HIGH>; gpio-mosi = <&gpy3 3 GPIO_ACTIVE_HIGH>; num-chipselects = <1>; - cs-gpios = <&gpy4 3 GPIO_ACTIVE_HIGH>; + cs-gpios = <&gpy4 3 GPIO_ACTIVE_LOW>; lcd@0 { compatible = "samsung,ld9040"; @@ -124,8 +124,6 @@ vci-supply = <&ldo17_reg>; reset-gpios = <&gpy4 5 GPIO_ACTIVE_HIGH>; spi-max-frequency = <1200000>; - spi-cpol; - spi-cpha; power-on-delay = <10>; reset-delay = <10>; panel-width-mm = <90>; -- cgit