[PATCH 3/6] ARM: dts: omap4-droid4: Add GPIO poweroff
From: Tony Lindgren <hidden>
Date: 2017-03-05 05:43:56
Also in:
linux-omap
Subsystem:
the rest · Maintainer:
Linus Torvalds
Possibly related (same subject, not in this thread)
- 2017-03-19 · Re: [PATCH 3/6] ARM: dts: omap4-droid4: Add GPIO poweroff · Sebastian Reichel <hidden>
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-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Marcel Partap <redacted> Cc: Michael Scott <redacted> Cc: Sebastian Reichel <redacted> Signed-off-by: Tony Lindgren <redacted> --- 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
--- 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 = <
--
2.11.1
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