[source] ramips: RB750Gr3: Add pwr LED and buzzer to DTS

[LEDE Commits]

blogic pushed a commit to source.git, branch master:
https://git.lede-project.org/07b571a4355a27502fcadf8f81144cab8e00a42a

commit 07b571a4355a27502fcadf8f81144cab8e00a42a
Author: Andrew Yong <me at ndoo.sg>
AuthorDate: Sat Nov 26 22:15:21 2016 +0800

    ramips: RB750Gr3: Add pwr LED and buzzer to DTS
    
    use pwr LED in diag.sh
    Expose unused pinmux pins as GPIOs
    export power LED and buzzer pins
    Use rb750gr3:blue:pwr LED in diag.sh for boot status instead of rb750gr3:green:usr
    
    Signed-off-by: Andrew Yong <me at ndoo.sg>
---
 target/linux/ramips/base-files/etc/diag.sh |  2 +-
 target/linux/ramips/dts/RB750Gr3.dts       | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
index a7b8ae0..6bcdc0f 100644
--- a/target/linux/ramips/base-files/etc/diag.sh
+++ b/target/linux/ramips/base-files/etc/diag.sh
@@ -191,7 +191,7 @@ get_status_led() {
 		status_led="$board:green:wps"
 		;;
 	rb750gr3)
-		status_led="$board:green:usr"
+		status_led="$board:blue:pwr"
 		;;
 	sap-g3200u3)
 		status_led="$board:green:usb"
diff --git a/target/linux/ramips/dts/RB750Gr3.dts b/target/linux/ramips/dts/RB750Gr3.dts
index bf1c2ba..756010a 100644
--- a/target/linux/ramips/dts/RB750Gr3.dts
+++ b/target/linux/ramips/dts/RB750Gr3.dts
@@ -20,6 +20,11 @@
 	gpio-leds {
 		compatible = "gpio-leds";
 
+		pwr {
+			label = "rb750gr3:blue:pwr";
+			gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
+		};
+
 		usr {
 			label = "rb750gr3:green:usr";
 			gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
@@ -49,6 +54,12 @@
 		compatible = "gpio-export";
 		#size-cells = <0>;
 
+		buzzer {
+			gpio-export,name = "buzzer";
+			gpio-export,output = <0>;
+			gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
+		};
+
 		usb {
 			gpio-export,name = "usb";
 			gpio-export,output = <1>;
@@ -102,7 +113,7 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
-			ralink,group = "i2c", "rgmii2", "sdhci";
+			ralink,group = "i2c", "uart2", "uart3", "pcie", "rgmii2", "jtag";
 			ralink,function = "gpio";
 		};
 	};