openwrt/target/linux/mvebu/patches-5.4/028-arm64-dts-mcbin-singleshot-add-heartbeat-LED.patch

From da57203dc7fd556fbb3f0ec7d7d7c0b0e893b386 Mon Sep 17 00:00:00 2001
From: Tomasz Maciej Nowak <tmn505@gmail.com>
Date: Tue, 10 Nov 2020 16:38:31 +0100
Subject: [PATCH] arm64: dts: mcbin-singleshot: add heartbeat LED

With board revision 1.3, SolidRun moved the power LED to the middle of
the board. In old place of power LED a GPIO controllable heartbeat LED
was added. This commit only touches Single Shot variant, since only this
variant is all revision 1.3.

Note:
This is slightly modified patch. Some boards could be placed in an
enclosure, so the LED18 is enabled by default, since that'll be the only
visible indicator that the board is operating.

Reported-by: Alexandra Alth <alexandra@alth.de>
Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
---
 .../marvell/armada-8040-mcbin-singleshot.dts  | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

--- a/arch/arm64/boot/dts/marvell/armada-8040-mcbin-singleshot.dts
+++ b/arch/arm64/boot/dts/marvell/armada-8040-mcbin-singleshot.dts
@@ -5,6 +5,8 @@
  * Device Tree file for MACCHIATOBin Armada 8040 community board platform
  */
 
+#include <dt-bindings/leds/common.h>
+
 #include "armada-8040-mcbin.dtsi"
 
 / {
@@ -12,6 +14,20 @@
 	compatible = "marvell,armada8040-mcbin-singleshot",
 			"marvell,armada8040-mcbin", "marvell,armada8040",
 			"marvell,armada-ap806-quad", "marvell,armada-ap806";
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-0 = <&cp0_led18_pins>;
+		pinctrl-names = "default";
+
+		led18 {
+			gpios = <&cp0_gpio2 1 GPIO_ACTIVE_LOW>;
+			function = LED_FUNCTION_HEARTBEAT;
+			color = <LED_COLOR_ID_GREEN>;
+			linux,default-trigger = "heartbeat";
+			default-state = "on";
+		};
+	};
 };
 
 &cp0_eth0 {
@@ -27,3 +43,10 @@
 	managed = "in-band-status";
 	sfp = <&sfp_eth1>;
 };
+
+&cp0_pinctrl {
+	cp0_led18_pins: led18-pins {
+		marvell,pins = "mpp33";
+		marvell,function = "gpio";
+	};
+};