alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-09-30 19:19:21 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat(ldo): add config to let hardware control the ldo output

Browse Source 
If LDO1 is used by spi flash, then we recommend to give the ownership to
the hardware. Software just read the parameters from the efuse and set
to PMU.
This commit is contained in:
morris
2024-08-07 19:09:49 +08:00
parent 11831cc0db
commit 631e15c6eb
6 changed files with 206 additions and 92 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
components/esp_hw_support/ldo/esp_ldo_regulator.c
View File

@@ -31,8 +31,8 @@ static portMUX_TYPE s_spinlock = portMUX_INITIALIZER_UNLOCKED;
static const uint32_t s_ldo_channel_adjustable_mask = LDO_LL_ADJUSTABLE_CHAN_MASK; // each bit represents if the LDO channel is adjustable in hardware
static ldo_regulator_channel_t s_ldo_channels[LDO_LL_UNIT_NUM] = {
[0 ... LDO_LL_UNIT_NUM - 1] = {
static ldo_regulator_channel_t s_ldo_channels[LDO_LL_NUM_UNITS] = {
[0 ... LDO_LL_NUM_UNITS - 1] = {
.chan_id = -1,
.voltage_mv = 0,
.ref_cnt = 0,
@@ -43,7 +43,7 @@ static ldo_regulator_channel_t s_ldo_channels[LDO_LL_UNIT_NUM] = {
esp_err_t esp_ldo_acquire_channel(const esp_ldo_channel_config_t *config, esp_ldo_channel_handle_t *out_handle)
{
ESP_RETURN_ON_FALSE(config, ESP_ERR_INVALID_ARG, TAG, "invalid argument");
ESP_RETURN_ON_FALSE(ldo_ll_is_valid_ldo_id(config->chan_id), ESP_ERR_INVALID_ARG, TAG, "invalid ldo channel ID");
ESP_RETURN_ON_FALSE(ldo_ll_is_valid_ldo_channel(config->chan_id), ESP_ERR_INVALID_ARG, TAG, "invalid ldo channel ID");
ESP_RETURN_ON_FALSE(config->voltage_mv <= LDO_LL_MAX_VOLTAGE_MV,
ESP_ERR_INVALID_ARG, TAG, "invalid voltage value: %d", config->voltage_mv);
int unit_id = LDO_ID2UNIT(config->chan_id);
@@ -78,8 +78,16 @@ esp_err_t esp_ldo_acquire_channel(const esp_ldo_channel_config_t *config, esp_ld
}
if (check_voltage_constraint_valid && check_adjustable_constraint_valid) {
if (channel->ref_cnt == 0) {
// if the channel is not in use, we need to set the voltage and enable it
ldo_ll_set_output_voltage_mv(unit_id, config->voltage_mv);
// if the channel is not in use, we need to set the initial voltage and enable it
uint8_t dref = 0;
uint8_t mul = 0;
// calculate the dref and mul
ldo_ll_voltage_to_dref_mul(unit_id, config->voltage_mv, &dref, &mul);
ldo_ll_adjust_voltage(unit_id, dref, mul);
// set the ldo unit owner ship
ldo_ll_set_owner(unit_id, config->flags.owned_by_hw ? LDO_LL_UNIT_OWNER_HW : LDO_LL_UNIT_OWNER_SW);
// suppress voltage ripple
ldo_ll_enable_ripple_suppression(unit_id, true);
ldo_ll_enable(unit_id, true);
}
// update the channel attributes
@@ -143,7 +151,11 @@ esp_err_t esp_ldo_channel_adjust_voltage(esp_ldo_channel_handle_t chan, int volt
// i.e., the handle is not shared between threads without mutex protection
chan->voltage_mv = voltage_mv;
int unit_id = LDO_ID2UNIT(chan->chan_id);
ldo_ll_set_output_voltage_mv(unit_id, voltage_mv);
uint8_t dref = 0;
uint8_t mul = 0;
// calculate the dref and mul
ldo_ll_voltage_to_dref_mul(unit_id, voltage_mv, &dref, &mul);
ldo_ll_adjust_voltage(unit_id, dref, mul);
return ESP_OK;
}
@@ -153,7 +165,7 @@ esp_err_t esp_ldo_dump(FILE *stream)
char line[100];
fprintf(stream, "ESP LDO Channel State:\n");
fprintf(stream, "%-5s %-5s %-10s %-12s %-5s\n", "Index", "ID", "ref_cnt", "voltage_mv", "adjustable");
for (int i = 0; i < LDO_LL_UNIT_NUM; i++) {
for (int i = 0; i < LDO_LL_NUM_UNITS; i++) {
char *buf = line;
size_t len = sizeof(line);
memset(line, 0x0, len);

1
components/esp_hw_support/ldo/include/esp_ldo_regulator.h
View File

@@ -30,6 +30,7 @@ typedef struct {
/// Extra flags of a LDO channel
struct ldo_extra_flags {
uint32_t adjustable : 1; /*!< Whether the LDO channel is adjustable, and the voltage can be updated by `esp_ldo_channel_adjust_voltage` */
uint32_t owned_by_hw: 1; /*!< If the LDO channel is owned by hardware, then software configurations will be overridden by hardware */
} flags; /*!< Flags for the LDO channel */
} esp_ldo_channel_config_t;