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Message-ID: <20240324224720.1345309-476-sashal@kernel.org>
Date: Sun, 24 Mar 2024 18:43:21 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Douglas Anderson <dianders@...omium.org>,
	Jessica Zhang <quic_jesszhan@...cinc.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.7 475/713] drm/panel: boe-tv101wum-nl6: make use of prepare_prev_first

From: Douglas Anderson <dianders@...omium.org>

[ Upstream commit 42a7a16bedc991190310a02dd202e29cfac52525 ]

The panel on sc7180-trogdor-wormdingler and
sc7180-trogdor-quackingstick hasn't been coming up since commit
9e15123eca79 ("drm/msm/dsi: Stop unconditionally powering up DSI hosts
at modeset"). Let's add "prepare_prev_first" as has been done for many
other DSI panels.

Fixes: 9e15123eca79 ("drm/msm/dsi: Stop unconditionally powering up DSI hosts at modeset")
Signed-off-by: Douglas Anderson <dianders@...omium.org>
Reviewed-by: Jessica Zhang <quic_jesszhan@...cinc.com>
Link: https://lore.kernel.org/r/20240216123111.1.I71c103720909790e1ec5a3f5bd96b18ab7b596fa@changeid
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240216123111.1.I71c103720909790e1ec5a3f5bd96b18ab7b596fa@changeid
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index c4c0f08e92026..bc08814954f9b 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -1871,6 +1871,8 @@ static int boe_panel_add(struct boe_panel *boe)
 
 	gpiod_set_value(boe->enable_gpio, 0);
 
+	boe->base.prepare_prev_first = true;
+
 	drm_panel_init(&boe->base, dev, &boe_panel_funcs,
 		       DRM_MODE_CONNECTOR_DSI);
 	err = of_drm_get_panel_orientation(dev->of_node, &boe->orientation);
-- 
2.43.0


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