diff --git a/README.md b/README.md
index 74d9a15..fc86022 100644
--- a/README.md
+++ b/README.md
@@ -116,6 +116,8 @@ There are four possible type of entries. "**[ ]**": Boot entry, "**{ }**": Capti
 | l4t=1                  | L4T Linux/Android native launching.                        |
 | boot_prefixes={FOLDER path} | L4T bootstack directory.                              |
 | ram_oc=0               | L4T RAM Overclocking. Check README_CONFIG.txt for more info. |
+| ram_oc_vdd2=1100       | L4T RAM VDD2 Voltage. Set VDD2 (T210B01) or VDD2/VDDQ (T210) voltage. 1050-1175. |
+| ram_oc_vddq=600        | L4T RAM VDDQ Voltage. Set VDDQ (T210B01). 550-650.         |
 | uart_port=0            | Enables logging on serial port for L4T uboot/kernel.       |
 | Additional keys        | Each distro supports more keys. Check README_CONFIG.txt  for more info. |
 | ---------------------- | ---------------------------------------------------------- |
diff --git a/bootloader/l4t/l4t.c b/bootloader/l4t/l4t.c
index d91ecbe..e6d902c 100644
--- a/bootloader/l4t/l4t.c
+++ b/bootloader/l4t/l4t.c
@@ -263,9 +263,9 @@ typedef struct _l4t_ctxt_t
 	emc_table_t *mtc_table;
 } l4t_ctxt_t;
 
-#define DRAM_VDD2_OC_MIN_VOLTAGE  1100
+#define DRAM_VDD2_OC_MIN_VOLTAGE  1050
 #define DRAM_VDD2_OC_MAX_VOLTAGE  1175
-#define DRAM_VDDQ_OC_MIN_VOLTAGE  600
+#define DRAM_VDDQ_OC_MIN_VOLTAGE  550
 #define DRAM_VDDQ_OC_MAX_VOLTAGE  650
 #define DRAM_T210B01_TBL_MAX_FREQ 1600000