linux-kernel - Re: [PATCH v2 2/2] drm/panel: panel-simple: Add BOE EV121WXM-N10-1850 panel support

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Message-ID: <4db4b940-8060-b785-e83a-f13eaae382f0@linaro.org>
Date:   Tue, 9 May 2023 09:49:27 +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:     sam@...nborg.org, airlied@...il.com, daniel@...ll.ch,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, thierry.reding@...il.com, linux-imx@....com,
        krzysztof.kozlowski@...aro.org
Subject: Re: [PATCH v2 2/2] drm/panel: panel-simple: Add BOE EV121WXM-N10-1850
 panel support

On 08/05/2023 10:38, Liu Ying wrote:
> Add BOE EV121WXM-N10-1850 12.1" WXGA (1280x800) TFT LCD panel support.
> The panel has a LVDS display interface.
> 
> The panel's product specification can be found at:
> http://www.onetech.com.tw/files/EV121WXM-N10-1850ProductSpecification_20180801.pdf
> 
> Signed-off-by: Liu Ying <victor.liu@....com>
> ---
> v1->v2:
> * Use struct display_timing to tell minimum and maximum pixel clock rates.
> * Set bus_flags to DRM_BUS_FLAG_DE_HIGH in struct panel_desc.
> 
>   drivers/gpu/drm/panel/panel-simple.c | 34 ++++++++++++++++++++++++++++
>   1 file changed, 34 insertions(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index 065f378bba9d..b1590a7e2cda 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1211,6 +1211,37 @@ static const struct panel_desc bananapi_s070wv20_ct16 = {
>   	},
>   };
>   
> +static const struct display_timing boe_ev121wxm_n10_1850_timing = {
> +	.pixelclock = { 69922000, 71000000, 72293000 },
> +	.hactive = { 1280, 1280, 1280 },
> +	.hfront_porch = { 48, 48, 48 },
> +	.hback_porch = { 80, 80, 80 },
> +	.hsync_len = { 32, 32, 32 },
> +	.vactive = { 800, 800, 800 },
> +	.vfront_porch = { 3, 3, 3 },
> +	.vback_porch = { 14, 14, 14 },
> +	.vsync_len = { 6, 6, 6 },
> +};
> +
> +static const struct panel_desc boe_ev121wxm_n10_1850 = {
> +	.timings = &boe_ev121wxm_n10_1850_timing,
> +	.num_timings = 1,
> +	.bpc = 8,
> +	.size = {
> +		.width = 261,
> +		.height = 163,
> +	},
> +	.delay = {
> +		.prepare = 9,
> +		.enable = 300,
> +		.unprepare = 300,
> +		.disable = 560,
> +	},
> +	.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
> +	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
> +	.connector_type = DRM_MODE_CONNECTOR_LVDS,
> +};
> +
>   static const struct drm_display_mode boe_hv070wsa_mode = {
>   	.clock = 42105,
>   	.hdisplay = 1024,
> @@ -3984,6 +4015,9 @@ static const struct of_device_id platform_of_match[] = {
>   	}, {
>   		.compatible = "bananapi,s070wv20-ct16",
>   		.data = &bananapi_s070wv20_ct16,
> +	}, {
> +		.compatible = "boe,ev121wxm-n10-1850",
> +		.data = &boe_ev121wxm_n10_1850,
>   	}, {
>   		.compatible = "boe,hv070wsa-100",
>   		.data = &boe_hv070wsa

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