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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>
This commit is contained in:
Emil Renner Berthing 2022-07-05 23:01:43 +02:00 committed by Palmer Dabbelt
parent d8357e3bf8
commit 2cfe9bbec5
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GPG Key ID: 2E1319F35FBB1889
1 changed files with 42 additions and 0 deletions
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42
arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
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@ -4,6 +4,8 @@
#include "fu740-c000.dtsi" #include "fu740-c000.dtsi"
#include <dt-bindings/gpio/gpio.h> #include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.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 */ /* Clock frequency (in Hz) of the PCB crystal for rtcclk */
#define RTCCLK_FREQ 1000000 #define RTCCLK_FREQ 1000000
@ -44,6 +46,46 @@
compatible = "gpio-poweroff"; compatible = "gpio-poweroff";
gpios = <&gpio 2 GPIO_ACTIVE_LOW>; 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 { &uart0 {