From 9946f937d482abeb697dde44a58a8d821f45df0c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 5 Mar 2017 20:11:58 -0800 Subject: [PATCH] ARM: dts: omap4-droid4: Add GPIO poweroff Droid 4 has a GPIO line that we can use with CONFIG_POWER_RESET_GPIO. It is probably connected to the CPCAP PMIC, and seems to power down the whole device taking power consumption to zero based on what I measured. Cc: devicetree@vger.kernel.org Cc: Marcel Partap Cc: Michael Scott Tested-By: Sebastian Reichel Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/omap4-droid4-xt894.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts b/arch/arm/boot/dts/omap4-droid4-xt894.dts index ed07f39d61a2..1830f747354f 100644 --- a/arch/arm/boot/dts/omap4-droid4-xt894.dts +++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts @@ -27,6 +27,14 @@ reg = <0x80000000 0x3fd00000>; /* 1021 MB */ }; + /* Poweroff GPIO probably connected to CPCAP */ + gpio-poweroff { + compatible = "gpio-poweroff"; + pinctrl-0 = <&poweroff_gpio>; + pinctrl-names = "default"; + gpios = <&gpio2 18 GPIO_ACTIVE_LOW>; /* gpio50 */ + }; + /* This is probably coming straight from the battery.. */ wl12xx_vmmc: regulator-wl12xx { compatible = "regulator-fixed"; @@ -226,6 +234,14 @@ }; &omap4_pmx_core { + + /* gpmc_ncs0.gpio_50 */ + poweroff_gpio: pinmux_poweroff_pins { + pinctrl-single,pins = < + OMAP4_IOPAD(0x074, PIN_OUTPUT_PULLUP | MUX_MODE3) + >; + }; + usb_gpio_mux_sel1: pinmux_usb_gpio_mux_sel1_pins { /* gpio_60 */ pinctrl-single,pins = < -- 2.30.2