[1/2] dt-bindings: Add vendor prefix for Satoz

Satoz is a Chinese TFT manufacturer.
Website: http://www.sat-sz.com/English/index.html

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

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

Hi Sam,

Sam Ravnborg <sam@ravnborg.org> wrote on Sat, 14 Dec 2019 11:09:11
+0100:

> 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 could not find the datasheet myself on the Internet, I found other
datasheets of other panels from the same vendor though.

I confirm I am talking about the R2 package (not B2 your find).

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

Yes there are min/typ/max timings in the datasheet, I didn't know about
display_mode (copied/pasted another random timing structure and adapted
it). I will try to adapt.

> 
> 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).

Any reason to create one (almost empty) file by compatible? As
comparison, simple I2C/SPI devices with no singularities are
listed there:
Documentation/devicetree/bindings/trivial-devices.yaml

I'll create a bindings file for this panel though.

Thanks,
Miquèl

On Fri, 13 Dec 2019 19:23:24 +0100, Miquel Raynal wrote:
> Satoz is a Chinese TFT manufacturer.
> Website: http://www.sat-sz.com/English/index.html
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>