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: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index e52b0132d43cde5abb5ead54872f8bd13afd6002..0127d11d14885e434a31093e064f608b2c042611 100644 (file)
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -67,7 +67,13 @@ matrix_keypad: matrix_keypad0 {
                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(0x970, PIN_INPUT_PULLUP | SLEWCTRL_FAST | DS0_PULL_UP_DOWN_EN | MUX
                        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 {