ARM: dts: imx7d-sdb: add gpio key support

Add support for imx7d-sdb board's gpio keys:

S1(FUNC1): KEY_VOLUMEUP
S3(FUNC2): KEY_VOLUMEDOWN

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx7d-sdb.dts b/arch/arm/boot/dts/imx7d-sdb.dts
index 5d6a08b..598d662 100644 (file)
--- a/arch/arm/boot/dts/imx7d-sdb.dts
+++ b/arch/arm/boot/dts/imx7d-sdb.dts
@@ -52,6 +52,24 @@
                reg = <0x80000000 0x80000000>;
        };
 
+       gpio-keys {
+               compatible = "gpio-keys";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_gpio_keys>;
+
+               volume-up {
+                       label = "Volume Up";
+                       gpios = <&gpio5 11 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_VOLUMEUP>;
+               };
+
+               volume-down {
+                       label = "Volume Down";
+                       gpios = <&gpio5 10 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_VOLUMEDOWN>;
+               };
+       };
+
        spi4 {
                compatible = "spi-gpio";
                pinctrl-names = "default";
@@ -519,6 +537,12 @@
                        >;
                };
 
+               pinctrl_gpio_keys: gpio_keysgrp {
+                       fsl,pins = <
+                               MX7D_PAD_SD2_RESET_B__GPIO5_IO11        0x59
+                               MX7D_PAD_SD2_WP__GPIO5_IO10             0x59
+                       >;
+               };
 
                pinctrl_hog: hoggrp {
                        fsl,pins = <