From ad188aa47edaa033a270e1a3efae43836ff47569 Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date: Wed, 18 Jan 2023 10:16:49 +0200
Subject: [PATCH] drm/bridge: lt9611: fix programming of video modes
Git-commit: ad188aa47edaa033a270e1a3efae43836ff47569
Patch-mainline: v6.3-rc1
References: git-fixes
Program the upper part of the hfront_porch into the proper register.
Fixes: 23278bf54afe ("drm/bridge: Introduce LT9611 DSI to HDMI bridge")
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230118081658.2198520-5-dmitry.baryshkov@linaro.org
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/bridge/lontium-lt9611.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index d6c08c888f03..7605c5b17657 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -187,7 +187,8 @@ static void lt9611_mipi_video_setup(struct lt9611 *lt9611,
regmap_write(lt9611->regmap, 0x8319, (u8)(hfront_porch % 256));
- regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256));
+ regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256) |
+ ((hfront_porch / 256) << 4));
regmap_write(lt9611->regmap, 0x831b, (u8)(hsync_porch % 256));
}
--
2.35.3