linux-kernel - Re: [PATCH] drm/panel: visionox-r66451: Set prepare_prev

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Date: Sat, 3 Feb 2024 15:40:08 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Jessica Zhang <quic_jesszhan@...cinc.com>, Sam Ravnborg
 <sam@...nborg.org>, David Airlie <airlied@...il.com>,
 Daniel Vetter <daniel@...ll.ch>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>
Cc: quic_abhinavk@...cinc.com, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/panel: visionox-r66451: Set prepare_prev_first flag

On 02/02/2024 22:50, Jessica Zhang wrote:
> The DSI host needs to be enabled for the panel to be initialized in
> prepare(). Ensure this happens by setting prepare_prev_first.
> 
> Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
> ---
>   drivers/gpu/drm/panel/panel-visionox-r66451.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-visionox-r66451.c b/drivers/gpu/drm/panel/panel-visionox-r66451.c
> index fbb73464de332..493f2a6076f8d 100644
> --- a/drivers/gpu/drm/panel/panel-visionox-r66451.c
> +++ b/drivers/gpu/drm/panel/panel-visionox-r66451.c
> @@ -322,6 +322,7 @@ static int visionox_r66451_probe(struct mipi_dsi_device *dsi)
>   	dsi->lanes = 4;
>   	dsi->format = MIPI_DSI_FMT_RGB888;
>   	dsi->mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
> +	ctx->panel.prepare_prev_first = true;
>   
>   	drm_panel_init(&ctx->panel, dev, &visionox_r66451_funcs, DRM_MODE_CONNECTOR_DSI);
>   	ctx->panel.backlight = visionox_r66451_create_backlight(dsi);
> 
> ---
> base-commit: 51b70ff55ed88edd19b080a524063446bcc34b62
> change-id: 20230717-visionox-r66451-prev-first-67b036160e32
> 
> Best regards,

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