[PATCH 7/7] drm/rockchip: dw-mipi: fix insufficient bandwidth of some panel

From: Chris Zhong
Date: Fri Jul 08 2016 - 05:06:02 EST


Set the lanes bps to 1 / 0.9 times of pclk, the margin is not enough
for some panel, it will cause the screen display is not normal, so
increases the badnwidth to 1 / 0.8.

Signed-off-by: Chris Zhong <zyw@xxxxxxxxxxxxxx>

---

drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index 8401185..fca7dde 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -503,8 +503,8 @@ static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi)

mpclk = DIV_ROUND_UP(dsi->mode->clock, MSEC_PER_SEC);
if (mpclk) {
- /* take 1 / 0.9, since mbps must big than bandwidth of RGB */
- tmp = mpclk * (bpp / dsi->lanes) * 10 / 9;
+ /* take 1 / 0.8, since mbps must big than bandwidth of RGB */
+ tmp = mpclk * (bpp / dsi->lanes) * 10 / 8;
if (tmp < max_mbps)
target_mbps = tmp;
else
--
2.6.3