diff options
| -rw-r--r-- | drivers/gpu/drm/tegra/dc.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c index d5a63230e509..24a5ef4f5bb8 100644 --- a/drivers/gpu/drm/tegra/dc.c +++ b/drivers/gpu/drm/tegra/dc.c @@ -1997,8 +1997,22 @@ static int tegra_dc_probe(struct platform_device *pdev) return PTR_ERR(dc->rst); } - if (!dc->soc->broken_reset) - reset_control_assert(dc->rst); + /* assert reset and disable clock */ + if (!dc->soc->broken_reset) { + err = clk_prepare_enable(dc->clk); + if (err < 0) + return err; + + usleep_range(2000, 4000); + + err = reset_control_assert(dc->rst); + if (err < 0) + return err; + + usleep_range(2000, 4000); + + clk_disable_unprepare(dc->clk); + } if (dc->soc->has_powergate) { if (dc->pipe == 0) |