diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
index 099ed6050d2509d022828f58b83429cd2c19837e..95851c4644782eb503cc0b40395951ac96d82f70 100644
--- a/drivers/clk/st/clkgen-fsyn.c
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -489,7 +489,7 @@ static int quadfs_pll_is_enabled(struct clk_hw *hw)
 	struct st_clk_quadfs_pll *pll = to_quadfs_pll(hw);
 	u32 npda = CLKGEN_READ(pll, npda);
 
-	return !!npda;
+	return pll->data->powerup_polarity ? !npda : !!npda;
 }
 
 static int clk_fs660c32_vco_get_rate(unsigned long input, struct stm_fs *fs,
@@ -774,7 +774,7 @@ static void quadfs_fsynth_disable(struct clk_hw *hw)
 	if (fs->lock)
 		spin_lock_irqsave(fs->lock, flags);
 
-	CLKGEN_WRITE(fs, nsb[fs->chan], !fs->data->standby_polarity);
+	CLKGEN_WRITE(fs, nsb[fs->chan], fs->data->standby_polarity);
 
 	if (fs->lock)
 		spin_unlock_irqrestore(fs->lock, flags);