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-rw-r--r--drivers/gpu/drm/i915/intel_cdclk.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_cdclk.c b/drivers/gpu/drm/i915/intel_cdclk.c
index 4ca4a34b7bfa..fedfe3c720b6 100644
--- a/drivers/gpu/drm/i915/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/intel_cdclk.c
@@ -520,6 +520,18 @@ static void vlv_set_cdclk(struct drm_i915_private *dev_priv,
int cdclk = cdclk_state->cdclk;
u32 val, cmd = cdclk_state->voltage_level;
+ switch (cdclk) {
+ case 400000:
+ case 333333:
+ case 320000:
+ case 266667:
+ case 200000:
+ break;
+ default:
+ MISSING_CASE(cdclk);
+ return;
+ }
+
/* There are cases where we can end up here with power domains
* off and a CDCLK frequency other than the minimum, like when
* issuing a modeset without actually changing any display after