From: Dave Gerlach <d-gerlach@xxxxxx>
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@xxxxxx>
Signed-off-by: Keerthy <j-keerthy@xxxxxx>
---
arch/arm/boot/dts/am437x-gp-evm.dts | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index e52b013..0127d11 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -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 {
--
1.9.1
