From 6e2c0919cd112b358f3eb4e12c128f4d58afeba7 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Wed, 9 Aug 2023 21:04:40 +0100
Subject: [PATCH 0747/1085] drm: panel: jdi-lt070me05000: Add
 prepare_upstream_first flag

The panel driver wants to send DCS commands from the prepare
hook, therefore the DSI host wants to be pre_enabled first.
Set the flag to achieve this.

https://forums.raspberrypi.com/viewtopic.php?t=354708

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
 drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lt070me05000.c
@@ -429,6 +429,7 @@ static int jdi_panel_add(struct jdi_pane
 		return dev_err_probe(dev, PTR_ERR(jdi->backlight),
 				     "failed to register backlight %d\n", ret);
 
+	jdi->base.prepare_prev_first = true;
 	drm_panel_init(&jdi->base, &jdi->dsi->dev, &jdi_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);