diff --git a/drivers/soc/rockchip/grf.c b/drivers/soc/rockchip/grf.c
index 15e71fd6c513..0931ddb0b384 100644
--- a/drivers/soc/rockchip/grf.c
+++ b/drivers/soc/rockchip/grf.c
@@ -44,9 +44,11 @@ static const struct rockchip_grf_info rk3036_grf __initconst = {
 };
 
 #define RK3288_GRF_SOC_CON0		0x244
+#define RK3288_GRF_SOC_CON2		0x24c
 
 static const struct rockchip_grf_value rk3288_defaults[] __initconst = {
 	{ "jtag switching", RK3288_GRF_SOC_CON0, HIWORD_UPDATE(0, 1, 12) },
+	{ "pwm select", RK3288_GRF_SOC_CON2, HIWORD_UPDATE(1, 1, 0) },
 };
 
 static const struct rockchip_grf_info rk3288_grf __initconst = {