0005-SiFive-HiFive-Unleashed-Add-PWM-LEDs-D1-D2-D3-D4.patch

From 082e93a136eafb444e93e518115aac349304b77e Mon Sep 17 00:00:00 2001
From: David Abdurachmanov <david.abdurachmanov@sifive.com>
Date: Fri, 5 Jun 2020 07:02:10 +0000
Subject: [PATCH 5/7] SiFive HiFive Unleashed: Add PWM LEDs (D1, D2, D3, D4)

By default no functions are assigned to LEDs. It's up to user/distribution
to provide udev rules to configure them.

Signed-off-by: David Abdurachmanov <david.abdurachmanov@sifive.com>
---
 .../riscv/boot/dts/sifive/hifive-unleashed-a00.dts | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
index 60846e8..a99aded 100644
--- a/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
@@ -3,6 +3,7 @@
 
 #include "fu540-c000.dtsi"
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pwm/pwm.h>
 
 /* Clock frequency (in Hz) of the PCB crystal for rtcclk */
 #define RTCCLK_FREQ		1000000
@@ -27,6 +28,37 @@
 	};
 
 	soc {
+		pwmleds {
+			compatible = "pwm-leds";
+			d1 {
+				label = "green:d1";
+				pwms = <&pwm0 0 7812500 PWM_POLARITY_INVERTED>;
+				active-low = <1>;
+				max-brightness = <255>;
+				linux,default-trigger = "none";
+			};
+			d2 {
+				label = "green:d2";
+				pwms = <&pwm0 1 7812500 PWM_POLARITY_INVERTED>;
+				active-low = <1>;
+				max-brightness = <255>;
+				linux,default-trigger = "none";
+			};
+			d3 {
+				label = "green:d3";
+				pwms = <&pwm0 2 7812500 PWM_POLARITY_INVERTED>;
+				active-low = <1>;
+				max-brightness = <255>;
+				linux,default-trigger = "none";
+			};
+			d4 {
+				label = "green:d4";
+				pwms = <&pwm0 3 7812500 PWM_POLARITY_INVERTED>;
+				active-low = <1>;
+				max-brightness = <255>;
+				linux,default-trigger = "none";
+			};
+		};
 	};
 
 	hfclk: hfclk {
-- 
2.7.4