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@quicinc.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,
-- 
Jessica Zhang <quic_jesszhan@quicinc.com>

Hi,

On Fri, 02 Feb 2024 13:50:21 -0800, 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.
> 
> 

Thanks, Applied to https://anongit.freedesktop.org/git/drm/drm-misc.git (drm-misc-next)

[1/1] drm/panel: visionox-r66451: Set prepare_prev_first flag
      https://cgit.freedesktop.org/drm/drm-misc/commit/?id=bb3bc3eac316b7c388733e625cc2343131b69dee

-- 
Neil

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@quicinc.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@linaro.org>