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ARM: dts: silk: Configure pull-up for SOFT_SW GPIO keys

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The GPIO pins connected to the 4 Software Switches ("SOFT_SW", SW12) do
not have external pull-up resistors, but rely on internal pull-ups being
enabled.  Fortunately this is satisfied by the initial state of these
pins.

Make this explicit by enabling bias-pull-up, to remove the dependency on
initial state and/or boot loader configuration.

While at it, rename the surrounding device node from "gpio-keys" to
"keyboard", to comply with generic node name recommendations.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/45f38a5333feba9bea80efeb5a41a6c3f60deda2.1619785905.git.geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven 2021-04-30 15:10:55 +02:00
parent 0003fa76d9
commit 0eb1734904
1 changed files with 9 additions and 1 deletions
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10
arch/arm/boot/dts/r8a7794-silk.dts
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@ -45,9 +45,12 @@ memory@40000000 {
reg = <0 0x40000000 0 0x40000000>;
};
gpio-keys {
keyboard {
compatible = "gpio-keys";
pinctrl-0 = <&keyboard_pins>;
pinctrl-names = "default";
key-3 {
gpios = <&gpio5 10 GPIO_ACTIVE_LOW>;
linux,code = <KEY_3>;
@ -358,6 +361,11 @@ du1_pins: du1 {
function = "du1";
};
keyboard_pins: keyboard {
pins = "GP_3_9", "GP_3_10", "GP_3_11", "GP_3_12";
bias-pull-up;
};
ssi_pins: sound {
groups = "ssi0129_ctrl", "ssi0_data", "ssi1_data";
function = "ssi";