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change(flash): acquire the LDO channel used by flash

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so that even if the same channel has other consumers, the voltage won't
be changed
This commit is contained in:
morris 2024-03-25 18:23:59 +08:00
parent cf59c00564
commit 5369b68bc8
2 changed files with 40 additions and 1 deletions
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25
components/esp_hw_support/port/esp32p4/Kconfig.ldo
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@ -1,6 +1,31 @@
menu "LDO Regulator Configurations"
depends on SOC_GP_LDO_SUPPORTED
config ESP_LDO_CHAN_SPI_NOR_FLASH_DOMAIN
int "LDO regulator channel that used to power SPI NOR Flash (READ HELP)"
default 1
range -1 4
help
The internal LDO regulator can be used to power the SPI Flash specific power domain.
This option is to select which LDO channel to connect to that domain.
Please set this option correctly according to your schematic.
Set to -1 if the Flash is using any external power supply.
choice ESP_LDO_VOLTAGE_SPI_NOR_FLASH_DOMAIN
prompt "SPI NOR Flash power domain voltage"
depends on ESP_LDO_CHAN_SPI_NOR_FLASH_DOMAIN != -1
default ESP_LDO_VOLTAGE_SPI_NOR_FLASH_3300_MV
help
Select the voltage used by the Flash power domain.
config ESP_LDO_VOLTAGE_SPI_NOR_FLASH_3300_MV
bool "3.3V"
endchoice
config ESP_LDO_VOLTAGE_SPI_NOR_FLASH_DOMAIN
int
default 3300 if ESP_LDO_VOLTAGE_SPI_NOR_FLASH_3300_MV
config ESP_LDO_CHAN_PSRAM_DOMAIN
int "LDO regulator channel that used to power PSRAM and MPLL (READ HELP)"
default 2

16
components/spi_flash/esp_flash_spi_init.c
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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -15,6 +15,7 @@
#include "esp_heap_caps.h"
#include "hal/spi_types.h"
#include "esp_private/spi_share_hw_ctrl.h"
#include "esp_ldo_regulator.h"
#include "hal/spi_flash_hal.h"
#include "hal/gpio_hal.h"
#include "esp_flash_internal.h"
@ -420,6 +421,19 @@ esp_err_t esp_flash_init_default_chip(void)
esp_err_t esp_flash_app_init(void)
{
esp_err_t err = ESP_OK;
// Acquire the LDO channel used by the SPI NOR flash
// in case the LDO voltage is changed by other users
#if defined(CONFIG_ESP_LDO_CHAN_SPI_NOR_FLASH_DOMAIN) && CONFIG_ESP_LDO_CHAN_SPI_NOR_FLASH_DOMAIN != -1
static esp_ldo_channel_handle_t s_ldo_chan = NULL;
esp_ldo_channel_config_t ldo_config = {
.chan_id = CONFIG_ESP_LDO_CHAN_SPI_NOR_FLASH_DOMAIN,
.voltage_mv = CONFIG_ESP_LDO_VOLTAGE_SPI_NOR_FLASH_DOMAIN,
};
err = esp_ldo_acquire_channel(&ldo_config, &s_ldo_chan);
if (err != ESP_OK) return err;
#endif
spi_flash_init_lock();
spi_flash_guard_set(&g_flash_guard_default_ops);
#if CONFIG_SPI_FLASH_ENABLE_COUNTERS