ram: stm32mp1: increase vdd2_ddr: buck2 for 32bits LPDDR
Need to increase the LPDDR2/LPDDR3 the voltage vdd2_ddr: buck2
form 1.2V to 1.25V for 32bits configuration.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/board/st/stm32mp1/board.c b/board/st/stm32mp1/board.c
index c3d832f..4e35d36 100644
--- a/board/st/stm32mp1/board.c
+++ b/board/st/stm32mp1/board.c
@@ -43,6 +43,7 @@
struct udevice *dev;
bool buck3_at_1800000v = false;
int ret;
+ u32 buck2;
ret = uclass_get_device_by_driver(UCLASS_PMIC,
DM_GET_DRIVER(pmic_stpmic1), &dev);
@@ -102,8 +103,10 @@
break;
- case STM32MP_LPDDR2:
- case STM32MP_LPDDR3:
+ case STM32MP_LPDDR2_16:
+ case STM32MP_LPDDR2_32:
+ case STM32MP_LPDDR3_16:
+ case STM32MP_LPDDR3_32:
/*
* configure VDD_DDR1 = LDO3
* Set LDO3 to 1.8V
@@ -133,11 +136,23 @@
if (ret < 0)
return ret;
- /* VDD_DDR2 : Set BUCK2 to 1.2V */
+ /* VDD_DDR2 : Set BUCK2 to 1.2V (16bits) or 1.25V (32 bits)*/
+ switch (ddr_type) {
+ case STM32MP_LPDDR2_32:
+ case STM32MP_LPDDR3_32:
+ buck2 = STPMIC1_BUCK2_1250000V;
+ break;
+ default:
+ case STM32MP_LPDDR2_16:
+ case STM32MP_LPDDR3_16:
+ buck2 = STPMIC1_BUCK2_1200000V;
+ break;
+ }
+
ret = pmic_clrsetbits(dev,
STPMIC1_BUCKX_MAIN_CR(STPMIC1_BUCK2),
STPMIC1_BUCK_VOUT_MASK,
- STPMIC1_BUCK2_1200000V);
+ buck2);
if (ret < 0)
return ret;