Re: [PATCH v2 15/15] arm64: dts: allwinner: bananapi-m64: Bananapi S070WV20-CT16 DSI panel

From: Maxime Ripard <maxime.ripard@bootlin.com>
To: Jagan Teki <jagan@amarulasolutions.com>
Cc: Chen-Yu Tsai <wens@csie.org>, Icenowy Zheng <icenowy@aosc.io>,
	Jernej Skrabec <jernej.skrabec@siol.net>,
	Vasily Khoruzhick <anarsoul@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	David Airlie <airlied@linux.ie>,
	dri-devel@lists.freedesktop.org,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	linux-clk@vger.kernel.org,
	Michael Trimarchi <michael@amarulasolutions.com>,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com
Subject: Re: [PATCH v2 15/15] arm64: dts: allwinner: bananapi-m64: Bananapi S070WV20-CT16 DSI panel
Date: Wed, 24 Oct 2018 19:11:59 +0100	[thread overview]
Message-ID: <20181024181159.35lm7ihqestbetvb@flea> (raw)
In-Reply-To: <20181023155035.9101-16-jagan@amarulasolutions.com>

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On Tue, Oct 23, 2018 at 09:20:35PM +0530, Jagan Teki wrote:
> This patch add support for Bananapi S070WV20-CT16 DSI panel to
> BPI-M64 board.
> 
> DSI panel connected via board DSI port with,
> - DC1SW as AVDD supply
> - DCDC1 as DVDD supply
> - PD6 gpio for reset pin
> - PD5 gpio for backlight enable pin
> - PD7 gpio for backlight vdd supply
> 
> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> ---
> Changes for v2:
> - Use quadratic rule on pwm brightness
> 
>  .../dts/allwinner/sun50i-a64-bananapi-m64.dts | 42 +++++++++++++++++++
>  1 file changed, 42 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
> index ef1c90401bb2..e0c6d1870a94 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
> @@ -45,6 +45,7 @@
>  #include "sun50i-a64.dtsi"
>  
>  #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/pwm/pwm.h>
>  
>  / {
>  	model = "BananaPi-M64";
> @@ -56,6 +57,24 @@
>  		serial1 = &uart1;
>  	};
>  
> +	vdd_bl: regulator@0 {

You shouldn't have a unit address if you don't have a reg
property. This will trigger a DTC warning.

> +		compatible = "regulator-fixed";
> +		regulator-name = "bl-3v3";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		gpio = <&pio 3 7 GPIO_ACTIVE_HIGH>; /* PD7 */
> +		enable-active-high;
> +	};
> +
> +	backlight_dsi: backlight-dsi {
> +		compatible = "pwm-backlight";
> +		pwms = <&r_pwm 0 50000 PWM_POLARITY_INVERTED>;
> +		brightness-levels = <1 2 4 8 16 32 64 128 512>;
> +		default-brightness-level = <2>;
> +		enable-gpios = <&pio 3 5 GPIO_ACTIVE_HIGH>; /* PD5 */
> +		power-supply = <&vdd_bl>;
> +	};

These nodes should be ordered by alphabetical order.

Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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