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drm/msm/mdp5: set rate before enabling clk

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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>
This commit is contained in:
Rob Clark 2014-11-20 17:08:06 -05:00
parent 2e362e1772
commit ac7a570406
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
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@ -323,6 +323,12 @@ struct msm_kms *mdp5_kms_init(struct drm_device *dev)
if (ret) if (ret)
goto fail; 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); read_hw_revision(mdp5_kms, &major, &minor);
priv = mdp5_cfg_init(mdp5_kms, major, minor); priv = mdp5_cfg_init(mdp5_kms, major, minor);
if (IS_ERR(priv)) { if (IS_ERR(priv)) {