Re: [PATCH v2] arm: boot: dts: am437x-idk: add gpio-based power key
From: Tony Lindgren <hidden>
Date: 2015-01-08 00:12:31
Also in:
linux-arm-kernel, linux-omap
* Felipe Balbi [off-list ref] [141226 12:56]:
AM437x IDK board has a User Switch which we can program to whatever we want. Because this board doesn't have a PMIC which can give us power button presses, let's use this user switch as a gpio-keys power button. Signed-off-by: Felipe Balbi <redacted>
Applying into omap-for-v3.20/dt thanks. Tony
quoted hunk
--- Changes since v1: - Add explicit pinctrl data. (note that ball reset state is already MUX_MODE7, and even though it was already working before, as can be seen from v1's boot logs, it's best that we cope with possibly broken bootloaders) depends on [1]. Boot logs at [2]. Note that this can rather easily be folded into the original patch if so desired. [1] http://marc.info/?l=linux-omap&m=141928747902983&w=2 [2] http://hastebin.com/qezicehunu arch/arm/boot/dts/am437x-idk-evm.dts | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)diff --git a/arch/arm/boot/dts/am437x-idk-evm.dts b/arch/arm/boot/dts/am437x-idk-evm.dts index b52dd0a..f9a17e2 100644 --- a/arch/arm/boot/dts/am437x-idk-evm.dts +++ b/arch/arm/boot/dts/am437x-idk-evm.dts@@ -96,9 +96,29 @@ regulator-boot-on; vin-supply = <&v1_5dreg>; }; + + gpio_keys: gpio_keys { + compatible = "gpio-keys"; + pinctrl-names = "default"; + pinctrl-0 = <&gpio_keys_pins_default>; + #address-cells = <1>; + #size-cells = <0>; + + switch@0 { + label = "power-button"; + linux,code = <KEY_POWER>; + gpios = <&gpio4 2 GPIO_ACTIVE_LOW>; + }; + }; }; &am43xx_pinmux { + gpio_keys_pins_default: gpio_keys_pins_default { + pinctrl-single,pins = < + 0x1b8 (PIN_INPUT | MUX_MODE7) /* cam0_field.gpio4_2 */ + >; + }; + i2c0_pins_default: i2c0_pins_default { pinctrl-single,pins = < 0x188 (PIN_INPUT | SLEWCTRL_FAST | MUX_MODE0) /* i2c0_sda.i2c0_sda */@@ -282,6 +302,10 @@ status = "okay"; }; +&gpio4 { + status = "okay"; +}; + &gpio5 { status = "okay"; };-- 2.2.0
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