diff --git a/arch/arm/mach-rockchip/rk322x-board.c b/arch/arm/mach-rockchip/rk322x-board.c
index 1c931b03d7..137479eb7d 100644
--- a/arch/arm/mach-rockchip/rk322x-board.c
+++ b/arch/arm/mach-rockchip/rk322x-board.c
@@ -61,9 +61,9 @@ int dram_init_banksize(void)
 {
 	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 	gd->bd->bi_dram[0].size = 0x8400000;
-	/* Reserve 0x200000 for OPTEE */
+	/* Reserve 32M for OPTEE with TA */
 	gd->bd->bi_dram[1].start = CONFIG_SYS_SDRAM_BASE
-				+ gd->bd->bi_dram[0].size + 0x200000;
+				+ gd->bd->bi_dram[0].size + 0x2000000;
 	gd->bd->bi_dram[1].size = gd->bd->bi_dram[0].start
 				+ gd->ram_size - gd->bd->bi_dram[1].start;