[linux-sunxi] [PATCH 4/6] ARM: dts: sun9i: Add GPIO LEDs for A80 Optimus board

[Koen Kooi]

> Op 28 okt. 2014, om 10:50 heeft Chen-Yu Tsai <wens at csie.org> het volgende geschreven:
> 
> The A80 Optimus board has 3 usable LEDs that are controlled via GPIO.
> 
> This patch adds support for 2 of them which are driver by GPIOs in the
> main pin controller. The remaining one uses GPIO from the R_PIO
> controller, which we don't support yet.

Out of curiousity, are those LEDs labeled and if so, would it make sense to assign default triggers matching the labels to them? As a personal preference I tend to have one of the LEDs use the 'heartbeat' trigger so I can see that it's alive.

regards,

Koen

> 
> Signed-off-by: Chen-Yu Tsai <wens at csie.org>
> ---
> arch/arm/boot/dts/sun9i-a80-optimus.dts | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun9i-a80-optimus.dts b/arch/arm/boot/dts/sun9i-a80-optimus.dts
> index 25fe775..91eda76 100644
> --- a/arch/arm/boot/dts/sun9i-a80-optimus.dts
> +++ b/arch/arm/boot/dts/sun9i-a80-optimus.dts
> @@ -64,6 +64,13 @@
> 				/* Enable internal pull-up */
> 				allwinner,pull = <1>;
> 			};
> +
> +			led_pins_optimus: led_pins at 0 {
> +				allwinner,pins = "PH0", "PH1";
> +				allwinner,function = "gpio_out";
> +				allwinner,drive = <0>;
> +				allwinner,pull = <0>;
> +			};
> 		};
> 
> 		uart0: serial at 07000000 {
> @@ -78,4 +85,22 @@
> 			status = "okay";
> 		};
> 	};
> +
> +	leds {
> +		compatible = "gpio-leds";
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&led_pins_optimus>;
> +
> +		led2 {
> +			label = "a80_optimus:led2:usr";
> +			gpios = <&pio 7 0 0>;
> +		};
> +
> +		/* led3 is on PM15, in R_PIO */
> +
> +		led4 {
> +			label = "a80_optimus:led4:usr";
> +			gpios = <&pio 7 1 0>;
> +		};
> +	};
> };
> -- 
> 2.1.1
> 
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