leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

riscv: dts: sifive unleashed: Add PWM controlled LEDs

Browse Source 
This adds the 4 PWM controlled green LEDs to the HiFive Unleashed device
tree. The schematic doesn't specify any special function for the LEDs,
so they're added here without any default triggers and named d1, d2, d3
and d4 just like in the schematic.

Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20221012110928.352910-1-emil.renner.berthing@canonical.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Emil Renner Berthing 2022-10-12 13:09:28 +02:00 committed by Palmer Dabbelt
parent d14e99bf95
commit 8bc8824d30
No known key found for this signature in database
GPG Key ID: 2E1319F35FBB1889
1 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts
View File

@ -3,6 +3,8 @@
#include "fu540-c000.dtsi" #include "fu540-c000.dtsi"
#include <dt-bindings/gpio/gpio.h> #include <dt-bindings/gpio/gpio.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
@ -42,6 +44,42 @@
compatible = "gpio-restart"; compatible = "gpio-restart";
gpios = <&gpio 10 GPIO_ACTIVE_LOW>; gpios = <&gpio 10 GPIO_ACTIVE_LOW>;
}; };
led-controller {
compatible = "pwm-leds";
led-d1 {
pwms = <&pwm0 0 7812500 PWM_POLARITY_INVERTED>;
active-low;
color = <LED_COLOR_ID_GREEN>;
max-brightness = <255>;
label = "d1";
};
led-d2 {
pwms = <&pwm0 1 7812500 PWM_POLARITY_INVERTED>;
active-low;
color = <LED_COLOR_ID_GREEN>;
max-brightness = <255>;
label = "d2";
};
led-d3 {
pwms = <&pwm0 2 7812500 PWM_POLARITY_INVERTED>;
active-low;
color = <LED_COLOR_ID_GREEN>;
max-brightness = <255>;
label = "d3";
};
led-d4 {
pwms = <&pwm0 3 7812500 PWM_POLARITY_INVERTED>;
active-low;
color = <LED_COLOR_ID_GREEN>;
max-brightness = <255>;
label = "d4";
};
};
}; };
&uart0 { &uart0 {