diff mbox series

ARM: dts: exynos: Fix polarity of the LCD SPI bus on UniversalC210 board

Message ID 20200304143726.15826-1-m.szyprowski@samsung.com
State New
Headers show
Series ARM: dts: exynos: Fix polarity of the LCD SPI bus on UniversalC210 board | expand

Commit Message

Marek Szyprowski March 4, 2020, 2:37 p.m. UTC
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: stable@vger.kernel.org # 5.0+
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 arch/arm/boot/dts/exynos4210-universal_c210.dts | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
diff mbox series

Patch

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>;