[PATCH] drm/panel: visionox-rm69299: Make use of prepare_prev_first

[David Heidelberg via B4 Relay]

From: Guido Günther <agx@xxxxxxxxxxx>

The DSI link must be powered up to let panel driver to talk to the panel
during prepare() callback execution. Set the prepare_prev_first flag to
guarantee this.

Fixes: 9e15123eca79 ("drm/msm/dsi: Stop unconditionally powering up DSI hosts at modeset")
Signed-off-by: Guido Günther <agx@xxxxxxxxxxx>
Signed-off-by: David Heidelberg <david@xxxxxxx>
---
 drivers/gpu/drm/panel/panel-visionox-rm69299.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-visionox-rm69299.c b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
index e5e688cf98fdc..0e33454650d13 100644
--- a/drivers/gpu/drm/panel/panel-visionox-rm69299.c
+++ b/drivers/gpu/drm/panel/panel-visionox-rm69299.c
@@ -387,6 +387,7 @@ static int visionox_rm69299_probe(struct mipi_dsi_device *dsi)
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM |
 			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
+	ctx->panel.prepare_prev_first = true;
 	ret = mipi_dsi_attach(dsi);
 	if (ret < 0) {
 		dev_err(dev, "dsi attach failed ret = %d\n", ret);

---
base-commit: e6efabc0afca02efa263aba533f35d90117ab283
change-id: 20260415-axolotl-display-715ce416e5c8

Best regards,
-- 
David Heidelberg <david@xxxxxxx>