linux-kernel - Re: [PATCH] drm/panel: visionox-rm69299: Fix clock frequency for SHIFT6mq

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Message-ID: <e92049c6-1d90-482f-ad4f-0c88bb96989e@linaro.org>
Date: Mon, 1 Sep 2025 14:24:48 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Guido Günther <agx@...xcpu.org>,
 Jessica Zhang <jessica.zhang@....qualcomm.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>,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 Casey Connolly <casey.connolly@...aro.org>, phone-devel@...r.kernel.org
Subject: Re: [PATCH] drm/panel: visionox-rm69299: Fix clock frequency for
 SHIFT6mq

On 30/08/2025 17:29, Guido Günther wrote:
> Make the clock frequency match what the sdm845 downstream kernel
> uses. Otherwise we're seeing timeouts like
> 
> ```
> msm_dsi ae94000.dsi: [drm:dsi_cmds2buf_tx] *ERROR* wait for video done timed out
> dsi_cmds2buf_tx: cmd dma tx failed, type=0x5, data0=0x28, len=4, ret=-110
> panel-visionox-rm69299 ae94000.dsi.0: sending DCS SET_DISPLAY_OFF failed: -110
> ```
> 
> Signed-off-by: Guido Günther <agx@...xcpu.org>
> ---
>   drivers/gpu/drm/panel/panel-visionox-rm69299.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-visionox-rm69299.c b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
> index 909c280eab1fb..e65697ce6f51c 100644
> --- a/drivers/gpu/drm/panel/panel-visionox-rm69299.c
> +++ b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
> @@ -247,7 +247,7 @@ static const struct drm_display_mode visionox_rm69299_1080x2248_60hz = {
>   };
>   
>   static const struct drm_display_mode visionox_rm69299_1080x2160_60hz = {
> -	.clock = 158695,
> +	.clock = 149360,
>   	.hdisplay = 1080,
>   	.hsync_start = 1080 + 26,
>   	.hsync_end = 1080 + 26 + 2,

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