linux-kernel - Re: [PATCH v2] drm/panel: simple: Update timings for AUO G101EVN010

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Message-ID: <d9594641-a6aa-40e9-b8fd-b6002000e490@linaro.org>
Date: Tue, 6 May 2025 09:42:35 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Kevin Baker <kevinb@...tureresearch.com>, Sam Ravnborg <sam@...nborg.org>
Cc: Jessica Zhang <quic_jesszhan@...cinc.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Alex Gonzalez <alex.gonzalez@...i.com>, Thierry Reding <treding@...dia.com>,
 Rob Herring <robh@...nel.org>, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/panel: simple: Update timings for AUO G101EVN010

On 05/05/2025 19:02, Kevin Baker wrote:
> Switch to panel timings based on datasheet for the AUO G101EVN01.0
> LVDS panel. Default timings were tested on the panel.
> 
> Previous mode-based timings resulted in horizontal display shift.
> 
> Signed-off-by: Kevin Baker <kevinb@...tureresearch.com>
> Fixes: 4fb86404a977 ("drm/panel: simple: Add AUO G101EVN010 panel support")
> ---
>   drivers/gpu/drm/panel/panel-simple.c | 25 +++++++++++++------------
>   1 file changed, 13 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
> index df718c4a86cb..c79dc8581054 100644
> --- a/drivers/gpu/drm/panel/panel-simple.c
> +++ b/drivers/gpu/drm/panel/panel-simple.c
> @@ -1026,27 +1026,28 @@ static const struct panel_desc auo_g070vvn01 = {
>   	},
>   };
>   
> -static const struct drm_display_mode auo_g101evn010_mode = {
> -	.clock = 68930,
> -	.hdisplay = 1280,
> -	.hsync_start = 1280 + 82,
> -	.hsync_end = 1280 + 82 + 2,
> -	.htotal = 1280 + 82 + 2 + 84,
> -	.vdisplay = 800,
> -	.vsync_start = 800 + 8,
> -	.vsync_end = 800 + 8 + 2,
> -	.vtotal = 800 + 8 + 2 + 6,
> +static const struct display_timing auo_g101evn010_timing = {
> +	.pixelclock = { 64000000, 68930000, 85000000 },
> +	.hactive = { 1280, 1280, 1280 },
> +	.hfront_porch = { 8, 64, 256 },
> +	.hback_porch = { 8, 64, 256 },
> +	.hsync_len = { 40, 168, 767 },
> +	.vactive = { 800, 800, 800 },
> +	.vfront_porch = { 4, 8, 100 },
> +	.vback_porch = { 4, 8, 100 },
> +	.vsync_len = { 8, 16, 223 },
>   };
>   
>   static const struct panel_desc auo_g101evn010 = {
> -	.modes = &auo_g101evn010_mode,
> -	.num_modes = 1,
> +	.timings = &auo_g101evn010_timing,
> +	.num_timings = 1,
>   	.bpc = 6,
>   	.size = {
>   		.width = 216,
>   		.height = 135,
>   	},
>   	.bus_format = MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
> +	.bus_flags = DRM_BUS_FLAG_DE_HIGH,
>   	.connector_type = DRM_MODE_CONNECTOR_LVDS,
>   };
>   

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