diff options
| author | Vineel Kumar Reddy Kovvuri <vineelkumarr@nvidia.com> | 2014-07-15 09:38:48 +0530 |
|---|---|---|
| committer | Mandar Padmawar <mpadmawar@nvidia.com> | 2014-07-16 06:28:16 -0700 |
| commit | 160ca814e14e8a926a78d602e4ff4df924ba375e (patch) | |
| tree | 47db207c3aa943f8a0a199fffc9bb413c7eeb1e5 /drivers | |
| parent | 2f9a881cd19cf7263ed07b327b2c5a2aa4c970eb (diff) | |
video: tegra: dc: reset dc in probe
Reset dc in probe. This fixes norrin display(edp) not working
in kernel because of inconsistent dc state set by bootloader.
Bug 200013637
Bug 1500654
Change-Id: Ic6bc2c40b6942a4d4d9a98ad2c984896bbb0d9be
Signed-off-by: Vineel Kumar Reddy Kovvuri <vineelkumarr@nvidia.com>
Reviewed-on: http://git-master/r/437553
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Animesh Kishore <ankishore@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Reviewed-by: Dan Willemsen <dwillemsen@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/tegra/dc/dc.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/video/tegra/dc/dc.c b/drivers/video/tegra/dc/dc.c index cd5057752e70..9604a49de227 100644 --- a/drivers/video/tegra/dc/dc.c +++ b/drivers/video/tegra/dc/dc.c @@ -3148,6 +3148,16 @@ static int tegra_dc_probe(struct platform_device *ndev) #endif if (dc->pdata->flags & TEGRA_DC_FLAG_ENABLED) { + /* WAR: BL is putting DC in bad state for EDP configuration */ + if (dc->out->type == TEGRA_DC_OUT_DP || + dc->out->type == TEGRA_DC_OUT_NVSR_DP) { + clk_prepare_enable(dc->clk); + tegra_periph_reset_assert(dc->clk); + udelay(10); + tegra_periph_reset_deassert(dc->clk); + udelay(10); + clk_disable_unprepare(dc->clk); + } _tegra_dc_set_default_videomode(dc); dc->enabled = _tegra_dc_enable(dc); |