diff options
| author |   Chris Zhong <zyw@rock-chips.com> | 2017-02-20 16:02:22 +0800 |
|---|---|---|
| committer |   Sean Paul <seanpaul@chromium.org> | 2017-03-01 14:49:03 -0500 |
| commit | ad1c974bf19ca5481ac5dfee01c9c8f14b91d5c3 (patch) | |
| tree | ada833564b37c89f0e09bb336df319876880f425 /drivers/gpu/drm/rockchip/dw-mipi-dsi.c | |
| parent | dt-bindings: add power domain node for dw-mipi-rockchip (diff) | |
| download | linux-dev-ad1c974bf19ca5481ac5dfee01c9c8f14b91d5c3.tar.xz linux-dev-ad1c974bf19ca5481ac5dfee01c9c8f14b91d5c3.zip | |
drm/rockchip/dsi: fix insufficient bandwidth of some panel
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@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1487577744-2855-7-git-send-email-zyw@rock-chips.com
Diffstat (limited to 'drivers/gpu/drm/rockchip/dw-mipi-dsi.c')
| -rw-r--r-- | drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 4 |
1 files 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 1c7740ce052e..f4e21dab5f85 100644 --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c @@ -529,8 +529,8 @@ static int dw_mipi_dsi_get_lane_bps(struct dw_mipi_dsi *dsi, mpclk = DIV_ROUND_UP(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 |