linux-kernel - [PATCH AUTOSEL 5.15 01/13] drm/bridge: tc358762: Instruct DSI host to generate HSE packets

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Date:   Fri,  8 Sep 2023 15:35:17 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Marek Vasut <marex@...x.de>, Sam Ravnborg <sam@...nborg.org>,
        Robert Foss <rfoss@...nel.org>,
        Sasha Levin <sashal@...nel.org>, andrzej.hajda@...el.com,
        neil.armstrong@...aro.org, airlied@...il.com, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.15 01/13] drm/bridge: tc358762: Instruct DSI host to generate HSE packets

From: Marek Vasut <marex@...x.de>

[ Upstream commit 362fa8f6e6a05089872809f4465bab9d011d05b3 ]

This bridge seems to need the HSE packet, otherwise the image is
shifted up and corrupted at the bottom. This makes the bridge
work with Samsung DSIM on i.MX8MM and i.MX8MP.

Signed-off-by: Marek Vasut <marex@...x.de>
Reviewed-by: Sam Ravnborg <sam@...nborg.org>
Signed-off-by: Robert Foss <rfoss@...nel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230615201902.566182-3-marex@denx.de
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/bridge/tc358762.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/tc358762.c b/drivers/gpu/drm/bridge/tc358762.c
index 1bfdfc6affafe..21c57d3435687 100644
--- a/drivers/gpu/drm/bridge/tc358762.c
+++ b/drivers/gpu/drm/bridge/tc358762.c
@@ -224,7 +224,7 @@ static int tc358762_probe(struct mipi_dsi_device *dsi)
 	dsi->lanes = 1;
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
-			  MIPI_DSI_MODE_LPM;
+			  MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_VIDEO_HSE;
 
 	ret = tc358762_parse_dt(ctx);
 	if (ret < 0)
-- 
2.40.1