提交 883e2e3d 编写于 作者: H H. Nikolaus Schaller 提交者: Zheng Zengkai

ARM: dts; gta04: SPI panel chip select is active low

stable inclusion
from stable-5.10.15
commit cc7b2fc9091626be615a938aa18c697e95ee0a97
bugzilla: 48167

--------------------------------

commit 18173982 upstream.

With the arrival of

commit 2fee9583 ("spi: dt-bindings: clarify CS behavior for spi-cs-high and gpio descriptors")

it was clarified what the proper state for cs-gpios should be, even if the
flag is ignored. The driver code is doing the right thing since

766c6b63 ("spi: fix client driver breakages when using GPIO descriptors")

The chip-select of the td028ttec1 panel is active-low, so we must omit spi-cs-high;
attribute (already removed by separate patch) and should now use GPIO_ACTIVE_LOW for
the client device description to be fully consistent.

Fixes: 766c6b63 ("spi: fix client driver breakages when using GPIO descriptors")
CC: stable@vger.kernel.org
Signed-off-by: NH. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
上级 52552da1
......@@ -114,7 +114,7 @@
gpio-sck = <&gpio1 12 GPIO_ACTIVE_HIGH>;
gpio-miso = <&gpio1 18 GPIO_ACTIVE_HIGH>;
gpio-mosi = <&gpio1 20 GPIO_ACTIVE_HIGH>;
cs-gpios = <&gpio1 19 GPIO_ACTIVE_HIGH>;
cs-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
num-chipselects = <1>;
/* lcd panel */
......
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