diff --git a/drivers/video/rockchip/mpp/mpp_rkvdec2.c b/drivers/video/rockchip/mpp/mpp_rkvdec2.c
index 1c92426cdffe..534e131fc715 100644
--- a/drivers/video/rockchip/mpp/mpp_rkvdec2.c
+++ b/drivers/video/rockchip/mpp/mpp_rkvdec2.c
@@ -505,6 +505,8 @@ static int rkvdec_vdpu383_run(struct mpp_dev *mpp, struct mpp_task *mpp_task)
 	mpp_write_relaxed(mpp, RKVDEC_REG_CACHE0_SIZE_BASE, reg);
 	/* clear cache */
 	mpp_write_relaxed(mpp, RKVDEC_REG_CLR_CACHE0_BASE, 1);
+	/* init max outstanding read */
+	mpp_write_relaxed(mpp, RKVDEC_REG_MAX_READS, 0x1c);
 
 	/* set registers for hardware */
 	for (i = 0; i < task->w_req_cnt; i++) {
diff --git a/drivers/video/rockchip/mpp/mpp_rkvdec2.h b/drivers/video/rockchip/mpp/mpp_rkvdec2.h
index 01bc6f08d595..90a795b39e84 100644
--- a/drivers/video/rockchip/mpp/mpp_rkvdec2.h
+++ b/drivers/video/rockchip/mpp/mpp_rkvdec2.h
@@ -87,6 +87,7 @@
 #define RKVDEC_REG_CACHE1_SIZE_BASE	0x55c
 #define RKVDEC_REG_CACHE2_SIZE_BASE	0x59c
 #define RKVDEC_REG_CLR_CACHE0_BASE	0x510
+#define RKVDEC_REG_MAX_READS		0x518
 #define RKVDEC_REG_CLR_CACHE1_BASE	0x550
 #define RKVDEC_REG_CLR_CACHE2_BASE	0x590
 
diff --git a/drivers/video/rockchip/mpp/mpp_rkvdec2_link.c b/drivers/video/rockchip/mpp/mpp_rkvdec2_link.c
index 723f1e3b0271..8a8d0ce49491 100644
--- a/drivers/video/rockchip/mpp/mpp_rkvdec2_link.c
+++ b/drivers/video/rockchip/mpp/mpp_rkvdec2_link.c
@@ -401,6 +401,8 @@ static void rkvdec2_clear_cache(struct mpp_dev *mpp)
 	mpp_write_relaxed(mpp, RKVDEC_REG_CLR_CACHE0_BASE, 1);
 	mpp_write_relaxed(mpp, RKVDEC_REG_CLR_CACHE1_BASE, 1);
 	mpp_write_relaxed(mpp, RKVDEC_REG_CLR_CACHE2_BASE, 1);
+	/* init max outstanding read */
+	mpp_write_relaxed(mpp, RKVDEC_REG_MAX_READS, 0x1c);
 }
 
 static int rkvdec2_link_enqueue(struct rkvdec_link_dev *link_dec,