diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-03-03 14:29:41 +0100 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-03-24 10:33:21 +0100 |
| commit | 3287a7a8feda71da74776fcc5d2565863d3aee06 (patch) | |
| tree | 1fa7c7854f02cb20e1466d7e280176c368bee85a | |
| parent | 431c8ae4519dba5ffec5b9a4c6bca90f3e591bb8 (diff) | |
ARM: dts: koelsch: Configure pull-up for SOFT_SW GPIO keys
The GPIO pins connected to the 4 Software Switches ("SOFT_SW", SW2) 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.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20210303132941.3938516-1-geert+renesas@glider.be
| -rw-r--r-- | arch/arm/boot/dts/r8a7791-koelsch.dts | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts index e4dbf464c960..61e881bbbf6e 100644 --- a/arch/arm/boot/dts/r8a7791-koelsch.dts +++ b/arch/arm/boot/dts/r8a7791-koelsch.dts @@ -81,6 +81,9 @@ keyboard { compatible = "gpio-keys"; + pinctrl-0 = <&sw2_pins>; + pinctrl-names = "default"; + key-1 { gpios = <&gpio5 0 GPIO_ACTIVE_LOW>; linux,code = <KEY_1>; @@ -618,6 +621,11 @@ groups = "audio_clk_a"; function = "audio_clk"; }; + + sw2_pins: sw2 { + pins = "GP_5_0", "GP_5_1", "GP_5_2", "GP_5_3"; + bias-pull-up; + }; }; ðer { |