[PATCH] arm64: dts: renesas: falcon: Add GP LEDs

[PATCH] arm64: dts: renesas: falcon: Add GP LEDs

[Kieran Bingham]

Three general purpose LEDs are provided on the Falcon CPU board.

Connect GP_LED1, GP_LED2, and GP_LED3 to the gpio-leds frameworks.
These LEDs are arranged in a block of four LEDs on the board itself, but
the fourth LED is as yet unidentified.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
---
 arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts b/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts
index 5617b81dd7dc..a18f84128fe1 100644
--- a/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts
@@ -20,6 +20,20 @@ aliases {
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led1 {
+			gpios = <&gpio4 18 GPIO_ACTIVE_HIGH>;
+		};
+		led2 {
+			gpios = <&gpio4 19 GPIO_ACTIVE_HIGH>;
+		};
+		led3 {
+			gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>;
+		};
+	};
 };
 
 &rwdt {
-- 
2.25.1

Re: [PATCH] arm64: dts: renesas: falcon: Add GP LEDs

[Geert Uytterhoeven]

Hi Kieran,

On Thu, Mar 4, 2021 at 5:53 PM Kieran Bingham
<kieran.bingham+renesas@ideasonboard.com> wrote:
> Three general purpose LEDs are provided on the Falcon CPU board.
>
> Connect GP_LED1, GP_LED2, and GP_LED3 to the gpio-leds frameworks.
> These LEDs are arranged in a block of four LEDs on the board itself, but
> the fourth LED is as yet unidentified.
>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

Thanks for your patch!

> --- a/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts

I believe the LEDs are on the CPU board, so they belong in
r8a779a0-falcon-cpu.dtsi instead?

> @@ -20,6 +20,20 @@ aliases {
>         chosen {
>                 stdout-path = "serial0:115200n8";
>         };
> +
> +       leds {
> +               compatible = "gpio-leds";
> +
> +               led1 {
> +                       gpios = <&gpio4 18 GPIO_ACTIVE_HIGH>;

Any need for other properties from
Documentation/devicetree/bindings/leds/common.yaml, like
color = <LED_COLOR_ID_GREEN>?

> +               };
> +               led2 {
> +                       gpios = <&gpio4 19 GPIO_ACTIVE_HIGH>;
> +               };
> +               led3 {
> +                       gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>;
> +               };
> +       };
>  };

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH] arm64: dts: renesas: falcon: Add GP LEDs

[Kieran Bingham]

On 05/03/2021 14:10, Geert Uytterhoeven wrote:
> Hi Kieran,
> 
> On Thu, Mar 4, 2021 at 5:53 PM Kieran Bingham
> <kieran.bingham+renesas@ideasonboard.com> wrote:
>> Three general purpose LEDs are provided on the Falcon CPU board.
>>
>> Connect GP_LED1, GP_LED2, and GP_LED3 to the gpio-leds frameworks.
>> These LEDs are arranged in a block of four LEDs on the board itself, but
>> the fourth LED is as yet unidentified.
>>
>> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> 
> Thanks for your patch!
> 
>> --- a/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts
>> +++ b/arch/arm64/boot/dts/renesas/r8a779a0-falcon.dts
> 
> I believe the LEDs are on the CPU board, so they belong in
> r8a779a0-falcon-cpu.dtsi instead?

Yes, I hadn't quite grasped the layouts of this new board yet.

Sorry - I'll move it.


> 
>> @@ -20,6 +20,20 @@ aliases {
>>         chosen {
>>                 stdout-path = "serial0:115200n8";
>>         };
>> +
>> +       leds {
>> +               compatible = "gpio-leds";
>> +
>> +               led1 {
>> +                       gpios = <&gpio4 18 GPIO_ACTIVE_HIGH>;
> 
> Any need for other properties from
> Documentation/devicetree/bindings/leds/common.yaml, like
> color = <LED_COLOR_ID_GREEN>?

Oh, I wasn't aware of those. But indeed the LED is green, so it seems
appropriate.

I'll test it out, and see if I can make it glow red (jokes).


> 
>> +               };
>> +               led2 {
>> +                       gpios = <&gpio4 19 GPIO_ACTIVE_HIGH>;
>> +               };
>> +               led3 {
>> +                       gpios = <&gpio4 20 GPIO_ACTIVE_HIGH>;
>> +               };
>> +       };
>>  };
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
>