diff --git a/board/rockchip/evb_rk3588/evb-rk3588.c b/board/rockchip/evb_rk3588/evb-rk3588.c
index caf94d8d29c..92c09c0af37 100644
--- a/board/rockchip/evb_rk3588/evb-rk3588.c
+++ b/board/rockchip/evb_rk3588/evb-rk3588.c
@@ -5,6 +5,9 @@
 
 #include <fdtdec.h>
 #include <fdt_support.h>
+#include <asm/io.h>
+
+#define RK3588_GRF_SOC_CON6 0xfd58c318
 
 #ifdef CONFIG_OF_BOARD_SETUP
 static int rk3588_add_reserved_memory_fdt_nodes(void *new_blob)
@@ -20,6 +23,9 @@ static int rk3588_add_reserved_memory_fdt_nodes(void *new_blob)
 	unsigned long flags = FDTDEC_RESERVED_MEMORY_NO_MAP;
 	unsigned int ret;
 
+	/* disable JTAG to fix SD load speed/interference */
+	writel(1 << (14+16), RK3588_GRF_SOC_CON6);
+
 	/*
 	 * Inject the reserved-memory nodes into the DTS
 	 */