diff options
| author | Rob Clark <robdclark@gmail.com> | 2014-11-20 17:08:06 -0500 |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2014-11-21 08:57:18 -0500 |
| commit | ac7a570406417e9d837f81c3a6b83fc8d629e583 (patch) | |
| tree | c02a451d392d3d8e6236feda852c7abafdc6bf2b /drivers/gpu/drm/msm/mdp/mdp5 | |
| parent | 2e362e1772b8978428f087007fc4d6c4990efd41 (diff) | |
| download | linux-ac7a570406417e9d837f81c3a6b83fc8d629e583.tar.bz2 | |
drm/msm/mdp5: set rate before enabling clk
Set a "safe" rate at first, in order to read out the hw revision. And
then after set the optimal value.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/mdp/mdp5')
| -rw-r--r-- | drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c index 64de0f9310c3..adb45419b08d 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c @@ -323,6 +323,12 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev) if (ret) goto fail; + /* we need to set a default rate before enabling. Set a safe + * rate first, then figure out hw revision, and then set a + * more optimal rate: + */ + clk_set_rate(mdp5_kms->src_clk, 200000000); + read_hw_revision(mdp5_kms, &major, &minor); priv = mdp5_cfg_init(mdp5_kms, major, minor); if (IS_ERR(priv)) { |