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

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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>
This commit is contained in:
Marek Szyprowski 2020-03-04 15:37:26 +01:00 • committed by Krzysztof Kozlowski
parent 604e8b79c8
commit 32a1671ff8
1 changed files with 1 additions and 3 deletions
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4
arch/arm/boot/dts/exynos4210-universal_c210.dts
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@ -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>;