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authorEmil Renner Berthing <emil.renner.berthing@canonical.com>2022-07-05 23:01:43 +0200
committerPalmer Dabbelt <palmer@rivosinc.com>2022-08-11 11:34:57 -0700
commit2cfe9bbec56ea579135cdd92409fff371841904f (patch)
tree35bff8282716ac41ae7eb28983a36918948846aa /arch
parentd8357e3bf8f7aabd98bf4dc2709ee877b741cefc (diff)
riscv: dts: sifive unmatched: Add PWM controlled LEDs
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> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Pavel Machek <pavel@ucw.cz> Tested-by: Ron Economos <re@w6rz.net> Link: https://lore.kernel.org/r/20220705210143.315151-5-emil.renner.berthing@canonical.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
index 1f386b07a832..07387f9c135c 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 @@
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 {

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