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feat(ldo): support output rail voltage (3.3V)

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morris
2024-12-27 16:13:59 +08:00
parent cfe7021801
commit 85f8f25b30
4 changed files with 32 additions and 21 deletions
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18
components/hal/esp32p4/include/hal/ldo_ll.h
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -23,8 +23,9 @@ extern "C" {
#define LDO_LL_NUM_UNITS 4 // Number of LDO units
#define LDO_LL_ADJUSTABLE_CHAN_MASK 0x0F // all the 4 channels are adjustable by setting "mul" and "dref" registers
#define LDO_LL_MAX_VOLTAGE_MV 3300
#define LDO_LL_MIN_VOLTAGE_MV 500
#define LDO_LL_RECOMMEND_MAX_VOLTAGE_MV 2700
#define LDO_LL_RECOMMEND_MIN_VOLTAGE_MV 500
#define LDO_LL_RAIL_VOLTAGE_MV 3300
/**
* @brief In the analog design, the LDO output "channel" is index from 1, i.e., VO1, VO2, VO3, VO4.
@@ -62,9 +63,10 @@ static inline bool ldo_ll_is_valid_ldo_channel(int ldo_chan)
* @param voltage_mv Voltage in mV
* @param dref Returned dref value
* @param mul Returned mul value
* @param use_rail_voltage Returned value to indicate if the rail voltage should be used
*/
__attribute__((always_inline))
static inline void ldo_ll_voltage_to_dref_mul(int ldo_unit, int voltage_mv, uint8_t *dref, uint8_t *mul)
static inline void ldo_ll_voltage_to_dref_mul(int ldo_unit, int voltage_mv, uint8_t *dref, uint8_t *mul, bool *use_rail_voltage)
{
uint8_t efuse_k = 0;
uint8_t efuse_vos = 0;
@@ -136,6 +138,8 @@ static inline void ldo_ll_voltage_to_dref_mul(int ldo_unit, int voltage_mv, uint
*dref = matched_dref;
*mul = matched_mul;
// if the expected voltage is 3.3V, use the rail voltage directly
*use_rail_voltage = (voltage_mv == LDO_LL_RAIL_VOLTAGE_MV);
}
/**
@@ -175,10 +179,10 @@ static inline void ldo_ll_set_owner(int ldo_unit, ldo_ll_unit_owner_t owner)
* @param ldo_unit LDO unit
* @param dref A parameter which controls the internal reference voltage
* @param mul Multiply factor
* @param bypass True: bypass; False: not bypass.
* @param use_rail_voltage Use rail voltage directly (i.e. bypass the LDO)
*/
__attribute__((always_inline))
static inline void ldo_ll_adjust_voltage(int ldo_unit, uint8_t dref, uint8_t mul, bool bypass)
static inline void ldo_ll_adjust_voltage(int ldo_unit, uint8_t dref, uint8_t mul, bool use_rail_voltage)
{
uint8_t index_array[LDO_LL_NUM_UNITS] = {0, 3, 1, 4};
/**
@@ -186,7 +190,7 @@ static inline void ldo_ll_adjust_voltage(int ldo_unit, uint8_t dref, uint8_t mul
* - 0: Vref * Mul
* - 1: 3.3V
*/
PMU.ext_ldo[index_array[ldo_unit]].pmu_ext_ldo.tieh = bypass;
PMU.ext_ldo[index_array[ldo_unit]].pmu_ext_ldo.tieh = use_rail_voltage;
PMU.ext_ldo[index_array[ldo_unit]].pmu_ext_ldo_ana.dref = dref;
PMU.ext_ldo[index_array[ldo_unit]].pmu_ext_ldo_ana.mul = mul;
}