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Commit f497ab6b authored by Douglas Anderson's avatar Douglas Anderson Committed by Heiko Stuebner
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ARM: dts: rockchip: Configure BT_HOST_WAKE as wake-up signal on veyron 



This enables wake up on Bluetooth activity when the device is
suspended. The BT_HOST_WAKE signal is only connected on devices
with BT module that are connected through UART.

Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
Signed-off-by: default avatarMatthias Kaehlcke <mka@chromium.org>
Signed-off-by: default avatarHeiko Stuebner <heiko@sntech.de>
parent b8925b7c

arch/arm/boot/dts/rk3288-veyron.dtsi

+29 −0
Original line number Diff line number Diff line
@@ -23,6 +23,31 @@ 
		reg = <0x0 0x0 0x0 0x80000000>;

	};



	bt_activity: bt-activity {

		compatible = "gpio-keys";

		pinctrl-names = "default";

		pinctrl-0 = <&bt_host_wake>;



		/*

		 * HACK: until we have an LPM driver, we'll use an

		 * ugly GPIO key to allow Bluetooth to wake from S3.

		 * This is expected to only be used by BT modules that

		 * use UART for comms.  For BT modules that talk over

		 * SDIO we should use a wakeup mechanism related to SDIO.

		 *

		 * Use KEY_RESERVED here since that will work as a wakeup but

		 * doesn't get reported to higher levels (so doesn't confuse

		 * Chrome).

		 */

		bt-wake {

			label = "BT Wakeup";

			gpios = <&gpio4 RK_PD7 GPIO_ACTIVE_HIGH>;

			linux,code = <KEY_RESERVED>;

			wakeup-source;

		};



	};



	power_button: power-button {

		compatible = "gpio-keys";

		pinctrl-names = "default";
@@ -549,6 +574,10 @@ 
			rockchip,pins = <4 RK_PD5 RK_FUNC_GPIO &pcfg_pull_none>;

		};



		bt_host_wake: bt-host-wake {

			rockchip,pins = <4 RK_PD7 RK_FUNC_GPIO &pcfg_pull_down>;

		};



		/*

		 * We run sdio0 at max speed; bump up drive strength.

		 * We also have external pulls, so disable the internal ones.