arm64: dts: k3-j721e: Add gpio-keys on common processor board

Common processor board for K3 J721E platform has two push buttons
namely SW10 and SW11.
Add a gpio-keys device node to model them as input keys in Linux.
Add required pinmux nodes to set GPIO pins as input.

Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
index 509579ca3db2a088382e2b77736b9ea12f31919f..d2894d55fbbeda93ce0bc9aa7ccc1ea1c619c8ad 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-common-proc-board.dts
@@ -6,12 +6,49 @@
 /dts-v1/;
 
 #include "k3-j721e-som-p0.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
        chosen {
                stdout-path = "serial2:115200n8";
                bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000";
        };
+
+       gpio_keys: gpio-keys {
+               compatible = "gpio-keys";
+               autorepeat;
+               pinctrl-names = "default";
+               pinctrl-0 = <&sw10_button_pins_default &sw11_button_pins_default>;
+
+               sw10: sw10 {
+                       label = "GPIO Key USER1";
+                       linux,code = <BTN_0>;
+                       gpios = <&main_gpio0 0 GPIO_ACTIVE_LOW>;
+               };
+
+               sw11: sw11 {
+                       label = "GPIO Key USER2";
+                       linux,code = <BTN_1>;
+                       gpios = <&wkup_gpio0 7 GPIO_ACTIVE_LOW>;
+               };
+       };
+};
+
+&main_pmx0 {
+       sw10_button_pins_default: sw10_button_pins_default {
+               pinctrl-single,pins = <
+                       J721E_IOPAD(0x0, PIN_INPUT, 7) /* (AC18) EXTINTn.GPIO0_0 */
+               >;
+       };
+};
+
+&wkup_pmx0 {
+       sw11_button_pins_default: sw11_button_pins_default {
+               pinctrl-single,pins = <
+                       J721E_WKUP_IOPAD(0xcc, PIN_INPUT, 7) /* (G28) WKUP_GPIO0_7 */
+               >;
+       };
 };
 
 &wkup_uart0 {