linux-kernel - [PATCH] arm64: dts: ti: k3-am642-sk: Add DT entry for onboard LEDs

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Date:   Wed, 23 Feb 2022 14:02:29 +0530
From:   Aparna M <a-m1@...com>
To:     <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
        <robh+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <praneeth@...com>, <grygorii.strashko@...com>, <nikhil.nd@...com>
Subject: [PATCH] arm64: dts: ti: k3-am642-sk: Add DT entry for onboard LEDs

AM642 SK has 8 leds connected to tpic2810 onboard. Add support for these
gpio leds.

Signed-off-by: Aparna M <a-m1@...com>
---
 arch/arm64/boot/dts/ti/k3-am642-sk.dts | 70 ++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
index 6b04745147be..31e45bafa49e 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
@@ -8,6 +8,7 @@
 #include <dt-bindings/mux/ti-serdes.h>
 #include <dt-bindings/phy/phy.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
 #include <dt-bindings/net/ti-dp83867.h>
 #include "k3-am642.dtsi"
 
@@ -125,6 +126,67 @@
 		vin-supply = <&vcc_3v3_sys>;
 		gpio = <&exp1 3 GPIO_ACTIVE_HIGH>;
 	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <1>;
+			gpios = <&exp2 0 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+		led-1 {
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <2>;
+			gpios = <&exp2 1 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+		led-2 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <3>;
+			gpios = <&exp2 2 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+		led-3 {
+			color = <LED_COLOR_ID_AMBER>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <4>;
+			gpios = <&exp2 3 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+		led-4 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <5>;
+			gpios = <&exp2 4 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+		led-5 {
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <6>;
+			gpios = <&exp2 5 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+		led-6 {
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <7>;
+			gpios = <&exp2 6 GPIO_ACTIVE_HIGH>;
+			default-state = "off";
+		};
+		led-7 {
+			color = <LED_COLOR_ID_AMBER>;
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <8>;
+			linux,default-trigger = "heartbeat";
+			gpios = <&exp2 7 GPIO_ACTIVE_HIGH>;
+		};
+	};
 };
 
 &main_pmx0 {
@@ -274,6 +336,14 @@
 				  "VPP_LDO_EN", "RPI_PS_3V3_En",
 				  "RPI_PS_5V0_En", "RPI_HAT_DETECT";
 	};
+
+	exp2: gpio@60 {
+		compatible = "ti,tpic2810";
+		reg = <0x60>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names = "LED1","LED2","LED3","LED4","LED5","LED6","LED7","LED8";
+	};
 };
 
 &main_i2c3 {
-- 
2.17.1