diff --git a/drivers/memory/rockchip/dsmc-controller.c b/drivers/memory/rockchip/dsmc-controller.c
index d4e85f85cdc9..495f8a3820fb 100644
--- a/drivers/memory/rockchip/dsmc-controller.c
+++ b/drivers/memory/rockchip/dsmc-controller.c
@@ -507,6 +507,9 @@ static int dsmc_psram_cfg(struct rockchip_dsmc *dsmc, uint32_t cs)
 
 		mr_tmp = (mr_tmp & (~(XCCELA_MR4_WL_MASK << XCCELA_MR4_WL_SHIFT))) |
 			 (tmp << XCCELA_MR4_WL_SHIFT);
+		/* set 0.5x refresh rate allow */
+		mr_tmp = (mr_tmp & (~(XCCELA_MR4_REFRESH_MASK << XCCELA_MR4_REFRESH_SHIFT))) |
+			 (XCCELA_MR4_0_5_REFRESH_RATE << XCCELA_MR4_REFRESH_SHIFT);
 
 		xccela_write_mr(region_map, 4, mr_tmp);
 
diff --git a/drivers/memory/rockchip/dsmc-host.h b/drivers/memory/rockchip/dsmc-host.h
index 9e4f7671a594..0c17d7eafd79 100644
--- a/drivers/memory/rockchip/dsmc-host.h
+++ b/drivers/memory/rockchip/dsmc-host.h
@@ -254,6 +254,9 @@
 
 #define XCCELA_MR4_WL_SHIFT				(5)
 #define XCCELA_MR4_WL_MASK				(0x7)
+#define XCCELA_MR4_REFRESH_SHIFT			(3)
+#define XCCELA_MR4_REFRESH_MASK				(0x3)
+#define XCCELA_MR4_0_5_REFRESH_RATE			(0x3)
 
 #define XCCELA_MR8_IO_TYPE_SHIFT			(6)
 #define XCCELA_MR8_IO_TYPE_MASK				(0x1)