diff --git a/drivers/gpu/drm/nouveau/nvc0_pm.c b/drivers/gpu/drm/nouveau/nvc0_pm.c
index e9992f62c1c0f97da00b8c04c5fdaca6d5c0f13b..ce65f81bb871d24ad889afac59aa306db5ac70e7 100644
--- a/drivers/gpu/drm/nouveau/nvc0_pm.c
+++ b/drivers/gpu/drm/nouveau/nvc0_pm.c
@@ -269,7 +269,7 @@ calc_clk(struct drm_device *dev, int clk, struct nvc0_pm_clock *info, u32 freq)
 	clk0 = calc_div(dev, clk, clk0, freq, &div1D);
 
 	/* see if we can get any closer using PLLs */
-	if (clk0 != freq) {
+	if (clk0 != freq && (0x00004387 & (1 << clk))) {
 		if (clk < 7)
 			clk1 = calc_pll(dev, clk, freq, &info->coef);
 		else