linux-kernel - Re: [PATCH 2/2] drm/panel: simple: Add ON Tat Industrial Company KD50G21-40NT-A1 panel

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Message-ID: <556b7957-802b-4792-a04b-427409807902@linaro.org>
Date: Mon, 19 Aug 2024 17:37:40 +0200
From: neil.armstrong@...aro.org
To: Liu Ying <victor.liu@....com>, dri-devel@...ts.freedesktop.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: quic_jesszhan@...cinc.com, maarten.lankhorst@...ux.intel.com,
 mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com, daniel@...ll.ch,
 robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 thierry.reding@...il.com, sam@...nborg.org
Subject: Re: [PATCH 2/2] drm/panel: simple: Add ON Tat Industrial Company
 KD50G21-40NT-A1 panel

On 16/08/2024 10:50, Liu Ying wrote:
> ON Tat Industrial Company KD50G21-40NT-A1 is a 5" WVGA LCD panel with DPI
> interface.
> 
> The LCD module specification can be found at:
> https://cdn-shop.adafruit.com/datasheets/KD50G21-40NT-A1.pdf
> 
> Signed-off-by: Liu Ying <victor.liu@....com>
> ---
>   drivers/gpu/drm/panel/panel-simple.c | 36 ++++++++++++++++++++++++++++
>   1 file changed, 36 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index bf40057c5cf3..89963df80917 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -3478,6 +3478,39 @@ static const struct panel_desc olimex_lcd_olinuxino_43ts = {
>   	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
>   };
>   
> +static const struct display_timing ontat_kd50g21_40nt_a1_timing = {
> +	.pixelclock = { 30000000, 30000000, 50000000 },
> +	.hactive = { 800, 800, 800 },
> +	.hfront_porch = { 1, 40, 255 },
> +	.hback_porch = { 1, 40, 87 },
> +	.hsync_len = { 1, 48, 87 },
> +	.vactive = { 480, 480, 480 },
> +	.vfront_porch = { 1, 13, 255 },
> +	.vback_porch = { 1, 29, 29 },
> +	.vsync_len = { 3, 3, 31 },
> +	.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
> +		 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
> +};
> +
> +static const struct panel_desc ontat_kd50g21_40nt_a1 = {
> +	.timings = &ontat_kd50g21_40nt_a1_timing,
> +	.num_timings = 1,
> +	.bpc = 8,
> +	.size = {
> +		.width = 108,
> +		.height = 65,
> +	},
> +	.delay = {
> +		.prepare = 147,		/* 5 VSDs */
> +		.enable = 147,		/* 5 VSDs */
> +		.disable = 88,		/* 3 VSDs */
> +		.unprepare = 117,	/* 4 VSDs */
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
> +	.bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
> +	.connector_type = DRM_MODE_CONNECTOR_DPI,
> +};
> +
>   /*
>    * 800x480 CVT. The panel appears to be quite accepting, at least as far as
>    * pixel clocks, but this is the timing that was being used in the Adafruit
> @@ -4837,6 +4870,9 @@ static const struct of_device_id platform_of_match[] = {
>   	}, {
>   		.compatible = "olimex,lcd-olinuxino-43-ts",
>   		.data = &olimex_lcd_olinuxino_43ts,
> +	}, {
> +		.compatible = "ontat,kd50g21-40nt-a1",
> +		.data = &ontat_kd50g21_40nt_a1,
>   	}, {
>   		.compatible = "ontat,yx700wv03",
>   		.data = &ontat_yx700wv03,

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>