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d29f0f3e21
Host and device (card, etc.) initialization is not thread-safe. After initialization transactions are serialized and guarded by mutex. Changed `SDMMC_HOST_DEFAULT()` default deinit function to `sdmmc_host_deinit_slot` which has a slot number as argument.
soc
The soc component provides hardware description for targets supported by ESP-IDF.
- `xxx_reg.h` - defines registers related to the hardware
- `xxx_struct.h` - hardware description in C `struct`
- `xxx_channel.h` - definitions for hardware with multiple channels
- `xxx_caps.h` - features/capabilities of the hardware
- `xxx_pins.h` - pin definitions
- `xxx_periph.h/*.c` - includes all headers related to a peripheral; declaration and definition of IO mapping for that hardware