diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2020-03-04 15:37:26 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-17 10:50:19 +0200 |
| commit | 9d971b0059a27ce136cb2c6dadfd971b0ac39b5e (patch) | |
| tree | 72236c614b6ca6d0d49f27ad744ff2a69d2770b3 /arch/arm/boot/dts/exynos4210-universal_c210.dts | |
| parent | e5b9c1027ee84e003b01ef5f44fdd596d0b2ec5a (diff) | |
ARM: dts: exynos: Fix polarity of the LCD SPI bus on UniversalC210 board
commit 32a1671ff8e84f0dfff3a50d4b2091d25e91f5e2 upstream.
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.x
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm/boot/dts/exynos4210-universal_c210.dts')
| -rw-r--r-- | arch/arm/boot/dts/exynos4210-universal_c210.dts | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts b/arch/arm/boot/dts/exynos4210-universal_c210.dts index 09d3d54d09ff..1b5578381d78 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>; |