Attaching DVI sink to the lt9611 requires different setup. Fix the
register write to make the DVI displays sync onto the correct sync
pulse.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/gpu/drm/bridge/lontium-lt9611.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 773d7a56f86f..7f9be74acf0d 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -352,13 +352,16 @@ static int lt9611_video_check(struct lt9611 *lt9611)
return temp;
}
-static void lt9611_hdmi_tx_digital(struct lt9611 *lt9611)
+static void lt9611_hdmi_tx_digital(struct lt9611 *lt9611, bool is_hdmi)
{
regmap_write(lt9611->regmap, 0x8443, 0x46 - lt9611->vic);
regmap_write(lt9611->regmap, 0x8447, lt9611->vic);
regmap_write(lt9611->regmap, 0x843d, 0x0a); /* UD1 infoframe */
- regmap_write(lt9611->regmap, 0x82d6, 0x8c);
+ if (is_hdmi)
+ regmap_write(lt9611->regmap, 0x82d6, 0x8c);
+ else
+ regmap_write(lt9611->regmap, 0x82d6, 0x0c);
regmap_write(lt9611->regmap, 0x82d7, 0x04);
}
@@ -719,7 +722,7 @@ lt9611_bridge_atomic_enable(struct drm_bridge *bridge,
}
lt9611_mipi_input_analog(lt9611);
- lt9611_hdmi_tx_digital(lt9611);
+ lt9611_hdmi_tx_digital(lt9611, connector->display_info.is_hdmi);
lt9611_hdmi_tx_phy(lt9611);
msleep(500);
--
2.39.0
