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Subject[PATCH v1 4/4] riscv: dts: sifive unmatched: Add PWM controlled LEDs
Date
This adds the two PWM controlled LEDs to the HiFive Unmatched device
tree. D12 is just a regular green diode, but D2 is an RGB diode with 3
PWM inputs controlling the three different colours.

Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
---
.../boot/dts/sifive/hifive-unmatched-a00.dts | 42 +++++++++++++++++++
1 file changed, 42 insertions(+)

diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
index c4ed9efdff03..beaefe74755a 100644
--- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
@@ -4,6 +4,8 @@
#include "fu740-c000.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/pwm/pwm.h>

/* Clock frequency (in Hz) of the PCB crystal for rtcclk */
#define RTCCLK_FREQ 1000000
@@ -44,6 +46,46 @@ gpio-poweroff {
compatible = "gpio-poweroff";
gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
};
+
+ led-controller-1 {
+ compatible = "pwm-leds";
+
+ led-d12 {
+ pwms = <&pwm0 0 7812500 PWM_POLARITY_INVERTED>;
+ active-low;
+ color = <LED_COLOR_ID_GREEN>;
+ max-brightness = <255>;
+ label = "d12";
+ };
+ };
+
+ led-controller-2 {
+ compatible = "pwm-leds-multicolor";
+
+ multi-led {
+ color = <LED_COLOR_ID_RGB>;
+ max-brightness = <255>;
+ label = "d2";
+
+ led-red {
+ pwms = <&pwm0 2 7812500 PWM_POLARITY_INVERTED>;
+ active-low;
+ color = <LED_COLOR_ID_RED>;
+ };
+
+ led-green {
+ pwms = <&pwm0 1 7812500 PWM_POLARITY_INVERTED>;
+ active-low;
+ color = <LED_COLOR_ID_GREEN>;
+ };
+
+ led-blue {
+ pwms = <&pwm0 3 7812500 PWM_POLARITY_INVERTED>;
+ active-low;
+ color = <LED_COLOR_ID_BLUE>;
+ };
+ };
+ };
};

&uart0 {
--
2.37.0
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