1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/clk/sunxi-ng/ccu-sun4i-a10.c b/drivers/clk/sunxi-ng/ccu-sun4i-a10.c
index ffa5dac221e4..129ebd2588fd 100644
--- a/drivers/clk/sunxi-ng/ccu-sun4i-a10.c
+++ b/drivers/clk/sunxi-ng/ccu-sun4i-a10.c
@@ -1434,8 +1434,16 @@ static void __init sun4i_ccu_init(struct device_node *node,
                 return;
         }
 
-        /* Force the PLL-Audio-1x divider to 1 */
         val = readl(reg + SUN4I_PLL_AUDIO_REG);
+
+        /*
+         * Force VCO and PLL bias current to lowest setting. Higher
+         * settings interfere with sigma-delta modulation and result
+         * in audible noise and distortions when using SPDIF or I2S.
+         */
+        val &= ~GENMASK(25, 16);
+
+        /* Force the PLL-Audio-1x divider to 1 */
         val &= ~GENMASK(29, 26);
         writel(val | (1 << 26), reg + SUN4I_PLL_AUDIO_REG);