Re: [PATCH 2/2] drm/panel: simple: Add Satoz SAT050AT40H12R2 panel support

From: Sam Ravnborg <sam@ravnborg.org>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Thierry Reding <thierry.reding@gmail.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	devicetree@vger.kernel.org,
	Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
	Maxime Chevallier <maxime.chevallier@bootlin.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH 2/2] drm/panel: simple: Add Satoz SAT050AT40H12R2 panel support
Date: Sat, 14 Dec 2019 11:09:11 +0100	[thread overview]
Message-ID: <20191214100911.GA2967@ravnborg.org> (raw)
In-Reply-To: <20191213182325.27030-2-miquel.raynal@bootlin.com>

Hi Miquel.

On Fri, Dec 13, 2019 at 07:23:25PM +0100, Miquel Raynal wrote:
> Add support for the Satoz SAT050AT40H12R2 RGB panel.

Google failed to find this display - do you have any pointers to
datasheet?

This turned up: SAT050AT40H12B2
But I failed to find any data sheet.

I wonder if there is any typical, min, max timings - so we could use
display_timing rather than display_mode.

Before the compatible is documented the patch will not be applied.
So you need to submit a binding document too,
which must be in meta-schema syntax (.yaml).

	Sam

> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  drivers/gpu/drm/panel/panel-simple.c | 27 +++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 15dd495c347d..8ae98437cbba 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -2557,6 +2557,30 @@ static const struct panel_desc samsung_ltn140at29_301 = {
>  	},
>  };
>  
> +static const struct drm_display_mode satoz_sat050at40h12r2_mode = {
> +	.clock = 33300,
> +	.hdisplay = 800,
> +	.hsync_start = 800 + 210,
> +	.hsync_end = 800 + 210 + 20,
> +	.htotal = 800 + 210 + 420 + 46,
> +	.vdisplay = 480,
> +	.vsync_start = 480 + 23,
> +	.vsync_end = 480 + 23 + 10,
> +	.vtotal = 480 + 23 + 10 + 22,
> +	.vrefresh = 60,
> +};
> +
> +static const struct panel_desc satoz_sat050at40h12r2 = {
> +	.modes = &satoz_sat050at40h12r2_mode,
> +	.num_modes = 1,
> +	.bpc = 8,
> +	.size = {
> +		.width = 108,
> +		.height = 65,
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
> +};
> +
>  static const struct drm_display_mode sharp_ld_d5116z01b_mode = {
>  	.clock = 168480,
>  	.hdisplay = 1920,
> @@ -3357,6 +3381,9 @@ static const struct of_device_id platform_of_match[] = {
>  	}, {
>  		.compatible = "samsung,ltn140at29-301",
>  		.data = &samsung_ltn140at29_301,
> +	}, {
> +		.compatible = "satoz,sat050at40h12r2",
> +		.data = &satoz_sat050at40h12r2,
>  	}, {
>  		.compatible = "sharp,ld-d5116z01b",
>  		.data = &sharp_ld_d5116z01b,
> -- 
> 2.20.1