From: Liu Ying <victor.liu@nxp.com>
Date: Fri, 1 Jul 2022 06:56:33 +0000 (+0800)
Subject: drm/bridge: fsl-ldb: Enable split mode for LVDS dual link
X-Git-Tag: v6.6.17~3937^2~23^2~2104
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=819da60d77c9f0ec9f069cb27952501562a2e17a;p=platform%2Fkernel%2Flinux-rpi.git

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@intel.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Marek Vasut <marex@denx.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220701065634.4027537-3-victor.liu@nxp.com
Link: https://patchwork.freedesktop.org/patch/msgid/20220701065634.4027537-4-victor.liu@nxp.com
---

diff --git a/drivers/gpu/drm/bridge/fsl-ldb.c b/drivers/gpu/drm/bridge/fsl-ldb.c
index 846cd06..f9e0f8d 100644
--- a/drivers/gpu/drm/bridge/fsl-ldb.c
+++ b/drivers/gpu/drm/bridge/fsl-ldb.c
@@ -138,7 +138,7 @@ 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;