From: Parth Pancholi <parth.pancholi@toradex.com>
Date: Wed, 11 Mar 2026 07:48:13 +0000 (+0200)
Subject: drm/bridge: tc358768: Set pre_enable_prev_first for reverse order
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=6b2bb5438bcfd7bad868665cd2aed1caf9ba3f2b;p=thirdparty%2Fkernel%2Flinux.git

drm/bridge: tc358768: Set pre_enable_prev_first for reverse order

Enable the pre_enable_prev_first flag on the tc358768 bridge to reverse
the pre-enable order, calling bridge pre_enable before panel prepare.
This ensures the bridge is ready before sending panel init commands in
the case of panels sending init commands in panel prepare function.

Signed-off-by: Parth Pancholi <parth.pancholi@toradex.com>
Tested-by: João Paulo Gonçalves <joao.goncalves@toradex.com> # Toradex Verdin AM62
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20260311-tc358768-v2-2-e75a99131bd5@ideasonboard.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---

diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c
index c95d164bd3a0..dab9cdf5cb98 100644
--- a/drivers/gpu/drm/bridge/tc358768.c
+++ b/drivers/gpu/drm/bridge/tc358768.c
@@ -448,6 +448,8 @@ static int tc358768_dsi_host_attach(struct mipi_dsi_host *host,
 						    DRM_MODE_CONNECTOR_DSI);
 		if (IS_ERR(bridge))
 			return PTR_ERR(bridge);
+
+		bridge->pre_enable_prev_first = true;
 	}
 
 	priv->output.dev = dev;