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@xxxxxxxxx>
---
arch/arm/boot/dts/r8a7794-silk.dts | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/r8a7794-silk.dts b/arch/arm/boot/dts/r8a7794-silk.dts
index eb89a27a6ed0c9aa..cafa3046daa4baf4 100644
--- a/arch/arm/boot/dts/r8a7794-silk.dts
+++ b/arch/arm/boot/dts/r8a7794-silk.dts
@@ -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";
--
2.25.1
