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| author |   Geert Uytterhoeven <geert+renesas@glider.be> | 2021-04-30 15:10:52 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-05-31 10:45:40 +0200 |
| commit | 28cce9540b135cf42d6332e5bca8e5b5dd998b38 (patch) | |
| tree | 51e2f667f8ebad54abf62f8f8ad0d065fc80a171 /arch/arm/boot/dts/r8a7790-lager.dts | |
| parent | arm64: dts: renesas: r8a7796[01]: Fix OPP table entry voltages (diff) | |
| download | linux-dev-28cce9540b135cf42d6332e5bca8e5b5dd998b38.tar.xz linux-dev-28cce9540b135cf42d6332e5bca8e5b5dd998b38.zip | |
ARM: dts: lager: Configure pull-up for SOFT_SW GPIO keys
The GPIO pins connected to the 4 Software Switches (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: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/9fae3c0c2c0000f6b43c9ce87fe64a594b30a7da.1619785905.git.geert+renesas@glider.be
Diffstat (limited to 'arch/arm/boot/dts/r8a7790-lager.dts')
| -rw-r--r-- | arch/arm/boot/dts/r8a7790-lager.dts | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/r8a7790-lager.dts b/arch/arm/boot/dts/r8a7790-lager.dts index 2dad0742d2ba..fa6d986b5d46 100644 --- a/arch/arm/boot/dts/r8a7790-lager.dts +++ b/arch/arm/boot/dts/r8a7790-lager.dts @@ -81,6 +81,9 @@ keyboard { compatible = "gpio-keys"; + pinctrl-0 = <&keyboard_pins>; + pinctrl-names = "default"; + one { linux,code = <KEY_1>; label = "SW2-1"; @@ -659,6 +662,11 @@ groups = "audio_clk_a"; function = "audio_clk"; }; + + keyboard_pins: keyboard { + pins = "GP_1_14", "GP_1_24", "GP_1_26", "GP_1_28"; + bias-pull-up; + }; }; ðer { |