diff options
| author | Naveen Kumar S <nkumars@nvidia.com> | 2015-05-06 12:51:43 +0530 |
|---|---|---|
| committer | Winnie Hsu <whsu@nvidia.com> | 2015-06-18 15:15:21 -0700 |
| commit | b4fc4edbe1b78f43acdb4425e647e0a433e9f5e2 (patch) | |
| tree | caccca44991af468914f3d438fc69268eddfe070 | |
| parent | 0fdd04b15343958b90bd0d2f77c12d3154a51320 (diff) | |
video: tegra: dsi: add delay after register write
Providing a small delay after writing to dc registers while
stopping dc stream helps in stabilizing the registers. This
helps in resolving the intermittent register read failure issue.
bug 200087039
Change-Id: I159d1d75aa2472b9e33bc42d890382f33def218a
Signed-off-by: Naveen Kumar S <nkumars@nvidia.com>
Reviewed-on: http://git-master/r/746062
(cherry picked from commit d29669af88735a2aeeb87b26f8794c9bcbb9f058)
Reviewed-on: http://git-master/r/756015
Reviewed-by: Pankaj Dabade <pdabade@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>
| -rw-r--r-- | drivers/video/tegra/dc/dsi.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/dsi.c b/drivers/video/tegra/dc/dsi.c index 9fd64003ef3f..284e0532e0cb 100644 --- a/drivers/video/tegra/dc/dsi.c +++ b/drivers/video/tegra/dc/dsi.c @@ -1682,6 +1682,9 @@ static void tegra_dsi_stop_dc_stream(struct tegra_dc *dc, tegra_dc_writel(dc, 0, DC_DISP_DISP_WIN_OPTIONS); tegra_dc_writel(dc, GENERAL_ACT_REQ , DC_CMD_STATE_CONTROL); + /* stabilization delay */ + udelay(500); + tegra_dc_put(dc); dsi->status.dc_stream = DSI_DC_STREAM_DISABLE; |