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>
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
index 64de0f9..adb4541 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 @@
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)) {