linux-kernel - [PATCH] arm64: dts: mcbin-singleshot: add heartbeat LED

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Date:   Tue, 10 Nov 2020 16:38:31 +0100
From:   Tomasz Maciej Nowak <tmn505@...il.com>
To:     Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Russell King <rmk+kernel@...linux.org.uk>,
        Alexandra Alth <alexandra@...h.de>
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.

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

diff --git a/arch/arm64/boot/dts/marvell/armada-8040-mcbin-singleshot.dts b/arch/arm64/boot/dts/marvell/armada-8040-mcbin-singleshot.dts
index 2e6832d02a59..411d20064271 100644
--- 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 +14,19 @@ / {
 	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";
+		};
+	};
 };
 
 &cp0_eth0 {
@@ -27,3 +42,10 @@ &cp1_eth0 {
 	managed = "in-band-status";
 	sfp = <&sfp_eth1>;
 };
+
+&cp0_pinctrl {
+	cp0_led18_pins: led18-pins {
+		marvell,pins = "mpp33";
+		marvell,function = "gpio";
+	};
+};
-- 
2.29.2