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@xxxxxxxxxxxxxxx
> Cc: Marcel Partap <mpartap@xxxxxxx>
> Cc: Michael Scott <michael.scott@xxxxxxxxxx>
> Cc: Sebastian Reichel <sre@xxxxxxxxxx>
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Tested-By: Sebastian Reichel <sre@xxxxxxxxxx>
-- 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
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