Re: [PATCH v10 11/13] arm64: dts: freescale: sl28: enable LED support

From: Shawn Guo <shawnguo@kernel.org>
To: Michael Walle <michael@walle.cc>
Cc: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org,
	linux-pwm@vger.kernel.org, linux-watchdog@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Bartosz Golaszewski" <bgolaszewski@baylibre.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Jean Delvare" <jdelvare@suse.com>,
	"Guenter Roeck" <linux@roeck-us.net>,
	"Lee Jones" <lee.jones@linaro.org>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Wim Van Sebroeck" <wim@linux-watchdog.org>,
	"Li Yang" <leoyang.li@nxp.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Jason Cooper" <jason@lakedaemon.net>,
	"Marc Zyngier" <maz@kernel.org>,
	"Mark Brown" <broonie@kernel.org>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Catalin Marinas" <catalin.marinas@arm.com>,
	"Will Deacon" <will@kernel.org>, "Pavel Machek" <pavel@ucw.cz>
Subject: Re: [PATCH v10 11/13] arm64: dts: freescale: sl28: enable LED support
Date: Tue, 22 Sep 2020 10:59:05 +0800	[thread overview]
Message-ID: <20200922025904.GX25109@dragon> (raw)
In-Reply-To: <20200914214341.14268-12-michael@walle.cc>

On Mon, Sep 14, 2020 at 11:43:39PM +0200, Michael Walle wrote:
> Now that we have support for GPIO lines of the SMARC connector, enable
> LED support on the KBox A-230-LS. There are two LEDs without fixed
> functions, one is yellow and one is green. Unfortunately, it is just one
> multi-color LED, thus while it is possible to enable both at the same
> time it is hard to tell the difference between "yellow only" and "yellow
> and green".
> 
> Signed-off-by: Michael Walle <michael@walle.cc>
> Acked-by: Pavel Machek <pavel@ucw.cz>
> ---
> Changes since v9:
>  - none
> 
> Changes since v8:
>  - none
> 
> Changes since v7:
>  - use new "function" and "color" properties instead of a label
>  - added default-on trigger for the power-led
> 
> Changes since v6:
>  - none
> 
> Changes since v5:
>  - changed the label, suggested by Pavel Machek
> 
> Changes since v4:
>  - none
> 
> Changes since v3:
>  - see cover letter
> 
>  .../fsl-ls1028a-kontron-kbox-a-230-ls.dts      | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-kbox-a-230-ls.dts b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-kbox-a-230-ls.dts
> index 4b4cc6a1573d..dd516c0efd8b 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-kbox-a-230-ls.dts
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a-kontron-kbox-a-230-ls.dts
> @@ -11,11 +11,29 @@
>  
>  /dts-v1/;
>  #include "fsl-ls1028a-kontron-sl28-var4.dts"
> +#include <dt-bindings/leds/common.h>
>  
>  / {
>  	model = "Kontron KBox A-230-LS";
>  	compatible = "kontron,kbox-a-230-ls", "kontron,sl28-var4",
>  		     "kontron,sl28", "fsl,ls1028a";
> +
> +	leds {
> +		compatible = "gpio-leds";
> +
> +		alarm-led {
> +			function = LED_FUNCTION_ALARM;
> +			color = <LED_COLOR_ID_YELLOW>;
> +			gpios = <&sl28cpld_gpio0 0 0>;
> +		};
> +
> +		power-led {
> +			linux,default-trigger = "default-on";
> +			function = LED_FUNCTION_POWER;
> +			color = <LED_COLOR_ID_GREEN>;
> +			gpios = <&sl28cpld_gpio1 3 0>;

Use GPIO_ACTIVE_HIGH for polarity to improve the readability.

I fixed them up and applied patch #9 ~ #13.

Shawn

> +		};
> +	};
>  };
>  
>  &enetc_mdio_pf3 {
> -- 
> 2.20.1
> 