diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-04-30 15:10:53 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2021-05-31 10:45:41 +0200 |
| commit | 1f27fedead91eb6077c299a98ea3d9fe2f9955db (patch) | |
| tree | f368c9afa91c3556955ece62bcbd1d49081a7f8e /arch/arm/boot/dts/r8a7792-blanche.dts | |
| parent | 28cce9540b135cf42d6332e5bca8e5b5dd998b38 (diff) | |
ARM: dts: blanche: Configure pull-up for SOFT_SW and SW25 GPIO keys
The GPIO pins connected to the 4 Software Switches (SW2) and the second
Tact Switch (SW25) 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.
Note that the GPIO pin connected to the first Tact Switch (SW24) does
have an external pull-up resistor.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/011e4c461767f2dd690b655b3dd501eb554184c1.1619785905.git.geert+renesas@glider.be
Diffstat (limited to 'arch/arm/boot/dts/r8a7792-blanche.dts')
| -rw-r--r-- | arch/arm/boot/dts/r8a7792-blanche.dts | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/r8a7792-blanche.dts b/arch/arm/boot/dts/r8a7792-blanche.dts index c100ae903a46..62aa9f61321b 100644 --- a/arch/arm/boot/dts/r8a7792-blanche.dts +++ b/arch/arm/boot/dts/r8a7792-blanche.dts @@ -112,6 +112,9 @@ keyboard { compatible = "gpio-keys"; + pinctrl-0 = <&keyboard_pins>; + pinctrl-names = "default"; + key-1 { linux,code = <KEY_1>; label = "SW2-1"; @@ -235,6 +238,11 @@ function = "du1"; }; + keyboard_pins: keyboard { + pins = "GP_3_10", "GP_3_11", "GP_3_12", "GP_3_15", "GP_11_02"; + bias-pull-up; + }; + pmic_irq_pins: pmicirq { groups = "intc_irq2"; function = "intc"; |