bugfix(esp_board_manager): Fixed sdmmc sdcard host slot configuration

1. Fixed the configuration of the sdmmc sdcard host slot, ensuring the configuration for the host slot in the yml file takes effect correctly
2. Using slot 0 to drive the sdcard for p4 function board, avoiding conflict with wifi hosted

Author: Liu Jinhong

packages/esp_board_manager/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Bug Fixes
+- Fixed the configuration of the sdmmc sdcard host slot, ensuring the configuration for the host slot in the yml file takes effect correctly
+- Using slot 0 to drive the sdcard for p4_function board, avoiding conflict with wifi hosted
+
 ## v0.4.0
 
 ### Features

packages/esp_board_manager/boards/esp32_p4_function_ev/board_devices.yaml

@@ -25,7 +25,7 @@ devices:
       - name: i2c_master
         address: 0x30
         frequency: 400000
-  
+
   - name: audio_adc
     chip: es8311  # Codec chip (ES8311)
     type: audio_codec
@@ -46,18 +46,27 @@ devices:
       - name: i2c_master
         address: 0x30
         frequency: 400000
-  
+
   - name: fs_sdcard
     type: fatfs_sdcard
     version: default
     config:
+      # Use SDMMC slot 0
+      slot: SDMMC_HOST_SLOT_0
+      frequency: SDMMC_FREQ_HIGHSPEED
       bus_width: 4
+      # If using slot 0, the pin must be configured as 0, the IO pins actually used are configured by the SDMMC driver
+      # For more details, please check https://github.com/espressif/esp-idf/blob/v5.5.1/components/esp_driver_sdmmc/src/sdmmc_host.c#L668
       pins:
-        clk: 43
-        cmd: 44
-        d0: 39
-        d1: 40
-        d2: 41
-        d3: 42
-      
+        clk: 0
+        cmd: 0
+        d0: 0
+        d1: 0
+        d2: 0
+        d3: 0
+        d4: 0
+        d5: 0
+        d6: 0
+        d7: 0
+
       ldo_chan_id: 4  # Use LDO_VO4 to power SDMMC IO

packages/esp_board_manager/devices/dev_fatfs_sdcard/dev_fatfs_sdcard.c

@@ -43,7 +43,7 @@ int dev_fatfs_sdcard_init(void *cfg, int cfg_size, void **device_handle)
     // Use SDMMC host
     handle->host = (sdmmc_host_t)SDMMC_HOST_DEFAULT();
     handle->host.max_freq_khz = config->frequency;
-    handle->host.flags = config->slot;
+    handle->host.slot = config->slot;
 
 #ifdef SOC_GP_LDO_SUPPORTED
     if (config->ldo_chan_id != -1) {
@@ -57,6 +57,7 @@ int dev_fatfs_sdcard_init(void *cfg, int cfg_size, void **device_handle)
             goto cleanup;
         }
         handle->host.pwr_ctrl_handle = pwr_ctrl_handle;
+        ESP_LOGI(TAG, "LDO power control is initialized");
     } else {
         ESP_LOGI(TAG, "LDO power control is not used");
     }

packages/esp_board_manager/devices/dev_fatfs_sdcard/dev_fatfs_sdcard.py

@@ -9,8 +9,8 @@
 # Define valid enum values for SDMMC configuration
 VALID_SDMMC_ENUMS = {
     'slot': [
+        'SDMMC_HOST_SLOT_0',
         'SDMMC_HOST_SLOT_1',
-        'SDMMC_HOST_SLOT_2'
     ],
     'frequency': [
         'SDMMC_FREQ_DEFAULT',      # 20000
@@ -115,14 +115,14 @@ def parse(name: str, full_config: dict, peripherals_dict=None) -> dict:
     frequency_raw = config.get('frequency', 'SDMMC_FREQ_HIGHSPEED')
     frequency = get_enum_value(frequency_raw, 'SDMMC_FREQ_HIGHSPEED', 'frequency')
     bus_width = config.get('bus_width', 1)  # Default to 1-bit mode
-    slot_flags = config.get('slot_flags', 'SDMMC_SLOT_FLAG_INTERNAL_PULLUP')  # Default slot flags
+    slot_flags = config.get('slot_flags', 0)  # Default slot flags
 
     # Get GPIO pins with default values from board_devices.yaml
     pins = config.get('pins', {})
     pin_config = {
-        'clk': pins.get('clk', 15),  # GPIO_NUM_15
-        'cmd': pins.get('cmd', 7),   # GPIO_NUM_7
-        'd0': pins.get('d0', 4),     # GPIO_NUM_4
+        'clk': pins.get('clk', -1),  # Not used
+        'cmd': pins.get('cmd', -1),  # Not used
+        'd0': pins.get('d0', -1),    # Not used
         'd1': pins.get('d1', -1),    # Not used
         'd2': pins.get('d2', -1),    # Not used
         'd3': pins.get('d3', -1),    # Not used