diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index ad0f03e51e4a..354a9dba6440 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -2006,7 +2006,6 @@ static void _bxt_set_cdclk(struct drm_i915_private *dev_priv,
 {
 	int cdclk = cdclk_config->cdclk;
 	int vco = cdclk_config->vco;
-	u16 waveform;
 
 	if (HAS_CDCLK_CRAWL(dev_priv) && dev_priv->display.cdclk.hw.vco > 0 && vco > 0 &&
 	    !cdclk_pll_is_unknown(dev_priv->display.cdclk.hw.vco)) {
@@ -2021,10 +2020,11 @@ static void _bxt_set_cdclk(struct drm_i915_private *dev_priv,
 	} else
 		bxt_cdclk_pll_update(dev_priv, vco);
 
-	waveform = cdclk_squash_waveform(dev_priv, cdclk);
+	if (HAS_CDCLK_SQUASH(dev_priv)) {
+		u16 waveform = cdclk_squash_waveform(dev_priv, cdclk);
 
-	if (HAS_CDCLK_SQUASH(dev_priv))
 		dg2_cdclk_squash_program(dev_priv, waveform);
+	}
 
 	intel_de_write(dev_priv, CDCLK_CTL, bxt_cdclk_ctl(dev_priv, cdclk_config, pipe));