Commit 6a156a05 authored by Dave Gerlach's avatar Dave Gerlach Committed by Tony Lindgren
Browse files

ARM: dts: am437x-gp-evm: Add pinmux for gpio0 wake 



Add pinctrl settings so that gpio0 wake from suspend will be supported
using buttons SW4 and SW7. Also, add pinctrl configuration for 0x954,
spi0_d0, which is an unused pin brought out to a header on the board
that in it's default state also connects to the gpio used for wakeup,
gpio0_3, which affects the state of the pin and prevents a working
wakeup unless we set the mux to a different state.

Signed-off-by: default avatarDave Gerlach <d-gerlach@ti.com>
Signed-off-by: default avatarKeerthy <j-keerthy@ti.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 74fe9bf4

arch/arm/boot/dts/am437x-gp-evm.dts

+25 −1
Original line number Diff line number Diff line
@@ -67,7 +67,13 @@ 
		debounce-delay-ms = <5>;

		col-scan-delay-us = <2>;



		row-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH /* Bank3, pin21 */

		pinctrl-names = "default", "sleep";

		pinctrl-0 = <&matrix_keypad_default>;

		pinctrl-1 = <&matrix_keypad_sleep>;



		linux,wakeup;



		row-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH /* Bank0, pin3 */

				&gpio4 3 GPIO_ACTIVE_HIGH /* Bank4, pin3 */

				&gpio4 2 GPIO_ACTIVE_HIGH>; /* Bank4, pin2 */
@@ -601,6 +607,24 @@ 
			AM4372_IOPAD(0x974, PIN_INPUT_PULLDOWN | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX_MODE0) /* uart0_txd.uart0_txd */

		>;

	};



	matrix_keypad_default: matrix_keypad_default {

		pinctrl-single,pins = <

			AM4372_IOPAD(0x9a4, PIN_OUTPUT | MUX_MODE7)

			AM4372_IOPAD(0x9a8, PIN_OUTPUT | MUX_MODE7)

			AM4372_IOPAD(0x9ac, PIN_INPUT | PULL_DISABLE | MUX_MODE9)

			AM4372_IOPAD(0x954, PIN_INPUT_PULLDOWN | MUX_MODE0)

		>;

	};



	matrix_keypad_sleep: matrix_keypad_sleep {

		pinctrl-single,pins = <

			AM4372_IOPAD(0x9a4, PULL_UP | MUX_MODE7)

			AM4372_IOPAD(0x9a8, PULL_UP | MUX_MODE7)

			AM4372_IOPAD(0x9ac, PIN_INPUT | PULL_DISABLE | MUX_MODE9)

			AM4372_IOPAD(0x954, PIN_INPUT_PULLDOWN | MUX_MODE0)

		>;

	};

};



&uart0 {

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