linux-kernel - [PATCH 2/3] drm/bridge: fsl-ldb: Enable split mode for LVDS dual link

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Message-Id: <20220701065634.4027537-3-victor.liu@nxp.com>
Date:   Fri,  1 Jul 2022 14:56:33 +0800
From:   Liu Ying <victor.liu@....com>
To:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     andrzej.hajda@...el.com, narmstrong@...libre.com,
        robert.foss@...aro.org, Laurent.pinchart@...asonboard.com,
        jonas@...boo.se, jernej.skrabec@...il.com, airlied@...ux.ie,
        daniel@...ll.ch, sam@...nborg.org, marex@...x.de, linux-imx@....com
Subject: [PATCH 2/3] drm/bridge: fsl-ldb: Enable split mode for LVDS dual link

When LVDS dual link is used, we have to enable the LDB_CTRL_SPLIT_MODE bit.

Fixes: 463db5c2ed4a ("drm: bridge: ldb: Implement simple Freescale i.MX8MP LDB bridge")
Cc: Andrzej Hajda <andrzej.hajda@...el.com>
Cc: Neil Armstrong <narmstrong@...libre.com>
Cc: Robert Foss <robert.foss@...aro.org>
Cc: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Cc: Jonas Karlman <jonas@...boo.se>
Cc: Jernej Skrabec <jernej.skrabec@...il.com>
Cc: David Airlie <airlied@...ux.ie>
Cc: Daniel Vetter <daniel@...ll.ch>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: Marek Vasut <marex@...x.de>
Cc: NXP Linux Team <linux-imx@....com>
Signed-off-by: Liu Ying <victor.liu@....com>
---
 drivers/gpu/drm/bridge/fsl-ldb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/fsl-ldb.c b/drivers/gpu/drm/bridge/fsl-ldb.c
index 3cb3b310e283..d4f005eef6f6 100644
--- a/drivers/gpu/drm/bridge/fsl-ldb.c
+++ b/drivers/gpu/drm/bridge/fsl-ldb.c
@@ -153,7 +153,7 @@ static void fsl_ldb_atomic_enable(struct drm_bridge *bridge,
 	reg = LDB_CTRL_CH0_ENABLE;
 
 	if (fsl_ldb->lvds_dual_link)
-		reg |= LDB_CTRL_CH1_ENABLE;
+		reg |= LDB_CTRL_CH1_ENABLE | LDB_CTRL_SPLIT_MODE;
 
 	if (lvds_format_24bpp) {
 		reg |= LDB_CTRL_CH0_DATA_WIDTH;
-- 
2.25.1