The DSI host must be enabled for the panel to be initialized in
prepare(). Set the prepare_prev_first flag to guarantee this.

Signed-off-by: Barnabás Czémán <trabarni@gmail.com>
---
 drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
index 3e0a8e0d58a0..483dc88d16d8 100644
--- a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
+++ b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
@@ -247,6 +247,7 @@ static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
 
 	drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
+	ctx->panel.prepare_prev_first = true;
 
 	ret = drm_panel_of_backlight(&ctx->panel);
 	if (ret)

---
base-commit: a59668a9397e7245b26e9be85d23f242ff757ae8
change-id: 20240423-jdi-fix-986a796a3101

Best regards,
-- 
Barnabás Czémán <trabarni@gmail.com>

Hi,

On Tue, 23 Apr 2024 22:54:33 +0200, Barnabás Czémán wrote:
> The DSI host must be enabled for the panel to be initialized in
> prepare(). Set the prepare_prev_first flag to guarantee this.
> 
> 

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

[1/1] drm/panel: jdi-fhd-r63452: make use of prepare_prev_first
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/4edd73d174de5e8ec43f0de303f4a8b80e643529

-- 
Neil

On 23/04/2024 22:54, Barnabás Czémán wrote:
> The DSI host must be enabled for the panel to be initialized in
> prepare(). Set the prepare_prev_first flag to guarantee this.
> 
> Signed-off-by: Barnabás Czémán <trabarni@gmail.com>
> ---
>   drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
> index 3e0a8e0d58a0..483dc88d16d8 100644
> --- a/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
> +++ b/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
> @@ -247,6 +247,7 @@ static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
>   
>   	drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
>   		       DRM_MODE_CONNECTOR_DSI);
> +	ctx->panel.prepare_prev_first = true;
>   
>   	ret = drm_panel_of_backlight(&ctx->panel);
>   	if (ret)
> 
> ---
> base-commit: a59668a9397e7245b26e9be85d23f242ff757ae8
> change-id: 20240423-jdi-fix-986a796a3101
> 
> Best regards,

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