The Exynos5250 Snow Chromebook has GPIO keys for power and lid so the SoC I/O pins have to be configured in external interrupt mode. Currently, this is working without setting the pinctrl lines but is better to set it explicitly instead of relying on the previous state of the I/O pins.
The DTS snippets were taken from the downstream ChromeOS tree. Signed-off-by: Javier Martinez Canillas <[email protected]> --- arch/arm/boot/dts/exynos5250-snow.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts index effaf2a..b9aeec4 100644 --- a/arch/arm/boot/dts/exynos5250-snow.dts +++ b/arch/arm/boot/dts/exynos5250-snow.dts @@ -33,6 +33,8 @@ gpio-keys { compatible = "gpio-keys"; + pinctrl-names = "default"; + pinctrl-0 = <&power_key_irq &lid_irq>; power { label = "Power"; @@ -540,6 +542,13 @@ }; &pinctrl_0 { + power_key_irq: power-key-irq { + samsung,pins = "gpx1-3"; + samsung,pin-function = <0xf>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + ec_irq: ec-irq { samsung,pins = "gpx1-6"; samsung,pin-function = <0>; @@ -575,6 +584,13 @@ samsung,pin-drv = <0>; }; + lid_irq: lid-irq { + samsung,pins = "gpx3-5"; + samsung,pin-function = <0xf>; + samsung,pin-pud = <0>; + samsung,pin-drv = <0>; + }; + hdmi_hpd_irq: hdmi-hpd-irq { samsung,pins = "gpx3-7"; samsung,pin-function = <0>; -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
