diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-04-30 15:10:55 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-05-31 10:45:41 +0200 |
| commit | 0eb17349042f1c5d8294b6b0a58bcda8b5db0e9d (patch) | |
| tree | 032f1d26749b42d3cb3925f190b0663f31389662 | |
| parent | 0003fa76d973e15263d8d03494aeef6a4361efa3 (diff) | |
ARM: dts: silk: Configure pull-up for SOFT_SW GPIO keys
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
| -rw-r--r-- | arch/arm/boot/dts/r8a7794-silk.dts | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/r8a7794-silk.dts b/arch/arm/boot/dts/r8a7794-silk.dts index eb89a27a6ed0..cafa3046daa4 100644 --- a/arch/arm/boot/dts/r8a7794-silk.dts +++ b/arch/arm/boot/dts/r8a7794-silk.dts @@ -45,9 +45,12 @@ 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 @@ 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"; |