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| author | Patrick Delaunay <patrick.delaunay@st.com> | 2020-03-06 11:14:03 +0100 |
|---|---|---|
| committer | Patrick Delaunay <patrick.delaunay@st.com> | 2020-03-24 14:20:50 +0100 |
| commit | e9a20f8a198c11a4108ca4b4deef8398f0cd93aa (patch) | |
| tree | a73a69e7f9e1f8b08a76cb78dfe2e6817576cec8 | |
| parent | 1a4f57c895ccebc15a33a36f5c0fc0bcb1dbdea4 (diff) | |
| download | u-boot-e9a20f8a198c11a4108ca4b4deef8398f0cd93aa.tar.gz | |
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>
| -rw-r--r-- | arch/arm/mach-stm32mp/include/mach/ddr.h | 6 | ||||
| -rw-r--r-- | board/st/stm32mp1/board.c | 23 | ||||
| -rw-r--r-- | drivers/ram/stm32mp1/stm32mp1_ddr.c | 30 | ||||
| -rw-r--r-- | include/power/stpmic1.h | 1 |
4 files changed, 49 insertions, 11 deletions
diff --git a/arch/arm/mach-stm32mp/include/mach/ddr.h b/arch/arm/mach-stm32mp/include/mach/ddr.h index b8a17cfbdd..bfc42a7c48 100644 --- a/arch/arm/mach-stm32mp/include/mach/ddr.h +++ b/arch/arm/mach-stm32mp/include/mach/ddr.h @@ -9,8 +9,10 @@ /* DDR power initializations */ enum ddr_type { STM32MP_DDR3, - STM32MP_LPDDR2, - STM32MP_LPDDR3, + STM32MP_LPDDR2_16, + STM32MP_LPDDR2_32, + STM32MP_LPDDR3_16, + STM32MP_LPDDR3_32, }; int board_ddr_power_init(enum ddr_type ddr_type); diff --git a/board/st/stm32mp1/board.c b/board/st/stm32mp1/board.c index c3d832f584..4e35d36c76 100644 --- a/board/st/stm32mp1/board.c +++ b/board/st/stm32mp1/board.c @@ -43,6 +43,7 @@ int board_ddr_power_init(enum ddr_type ddr_type) 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 @@ int board_ddr_power_init(enum ddr_type ddr_type) 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 @@ int board_ddr_power_init(enum ddr_type ddr_type) 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; diff --git a/drivers/ram/stm32mp1/stm32mp1_ddr.c b/drivers/ram/stm32mp1/stm32mp1_ddr.c index d765a46f7c..a87914f2d5 100644 --- a/drivers/ram/stm32mp1/stm32mp1_ddr.c +++ b/drivers/ram/stm32mp1/stm32mp1_ddr.c @@ -668,14 +668,34 @@ void stm32mp1_ddr_init(struct ddr_info *priv, { u32 pir; int ret = -EINVAL; + char bus_width; + + switch (config->c_reg.mstr & DDRCTRL_MSTR_DATA_BUS_WIDTH_MASK) { + case DDRCTRL_MSTR_DATA_BUS_WIDTH_QUARTER: + bus_width = 8; + break; + case DDRCTRL_MSTR_DATA_BUS_WIDTH_HALF: + bus_width = 16; + break; + default: + bus_width = 32; + break; + } + if (config->c_reg.mstr & DDRCTRL_MSTR_DDR3) ret = board_ddr_power_init(STM32MP_DDR3); - else if (config->c_reg.mstr & DDRCTRL_MSTR_LPDDR2) - ret = board_ddr_power_init(STM32MP_LPDDR2); - else if (config->c_reg.mstr & DDRCTRL_MSTR_LPDDR3) - ret = board_ddr_power_init(STM32MP_LPDDR3); - + else if (config->c_reg.mstr & DDRCTRL_MSTR_LPDDR2) { + if (bus_width == 32) + ret = board_ddr_power_init(STM32MP_LPDDR2_32); + else + ret = board_ddr_power_init(STM32MP_LPDDR2_16); + } else if (config->c_reg.mstr & DDRCTRL_MSTR_LPDDR3) { + if (bus_width == 32) + ret = board_ddr_power_init(STM32MP_LPDDR3_32); + else + ret = board_ddr_power_init(STM32MP_LPDDR3_16); + } if (ret) panic("ddr power init failed\n"); diff --git a/include/power/stpmic1.h b/include/power/stpmic1.h index dc8b5a7459..1493a677f0 100644 --- a/include/power/stpmic1.h +++ b/include/power/stpmic1.h @@ -37,6 +37,7 @@ #define STPMIC1_BUCK_VOUT(sel) (sel << STPMIC1_BUCK_VOUT_SHIFT) #define STPMIC1_BUCK2_1200000V STPMIC1_BUCK_VOUT(24) +#define STPMIC1_BUCK2_1250000V STPMIC1_BUCK_VOUT(26) #define STPMIC1_BUCK2_1350000V STPMIC1_BUCK_VOUT(30) #define STPMIC1_BUCK3_1800000V STPMIC1_BUCK_VOUT(39) |