| Message ID | 20170305054359.8293-4-tony@atomide.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, On Sat, Mar 04, 2017 at 09:43:56PM -0800, Tony Lindgren wrote: > 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 <mpartap@gmx.net> > Cc: Michael Scott <michael.scott@linaro.org> > Cc: Sebastian Reichel <sre@kernel.org> > Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-By: Sebastian Reichel <sre@kernel.org> -- Sebastian > 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
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 = <
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 <mpartap@gmx.net> Cc: Michael Scott <michael.scott@linaro.org> Cc: Sebastian Reichel <sre@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> --- arch/arm/boot/dts/omap4-droid4-xt894.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)