diff options
| author | Animesh Kishore <ankishore@nvidia.com> | 2012-05-14 13:27:27 +0530 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-05-15 15:12:32 -0700 |
| commit | acf4b288b2f2a9802fca8130259f8bbff6079984 (patch) | |
| tree | b59b519bdeb2e39f5d9d6b0132f5fdcac6689abc /drivers | |
| parent | 2c6ab704f63563a1119ded418d1ad1d280c6588f (diff) | |
video: tegra: dsi: WAR to stop on going host write
WAR comprises of soft reset dsi controller followed by
explicitly clearing host trigger.
Bug 982919
Change-Id: Ia8c497dd496435e429cd5b5ee8aaf1b7d78dc797
Signed-off-by: Animesh Kishore <ankishore@nvidia.com>
Reviewed-on: http://git-master/r/102204
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/tegra/dc/dsi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/dsi.c b/drivers/video/tegra/dc/dsi.c index def5b38b8b9d..69cc60f70f1c 100644 --- a/drivers/video/tegra/dc/dsi.c +++ b/drivers/video/tegra/dc/dsi.c @@ -1931,6 +1931,10 @@ static struct dsi_status *tegra_dsi_prepare_host_transmission( if (tegra_dsi_host_busy(dsi)) { tegra_dsi_soft_reset(dsi); + + /* WAR to stop host write in middle */ + tegra_dsi_writel(dsi, TEGRA_DSI_DISABLE, DSI_TRIGGER); + if (tegra_dsi_host_busy(dsi)) { err = -EBUSY; dev_err(&dc->ndev->dev, "DSI host busy\n"); |