This commit aims to enable the use of ROM functions on ESP32-S2.
This is done by creating the required syscall stubs table and adding the missing symbols to the linker script.
Adds support for the ES8311 codec on the ESP32-S2-Kaluga-1 board. This commit also adds basic configurations for testing and updates the board documentation.
- Add ioctl method to enable allocating the apb buffer.
- Add RX methods to set data width, sample rate, channels and
for receiving data from the I2S peripheral.
- Update the i2schar defconfig to enable the I2S receiver.
- Add nxlooper defconfig to enable testing the RX interface.
- Add specific bindings on ESP32-S2 bringup to enable nxlooper
to work without the need of any specific codec.
Add initial support for the I2S peripheral on ESP32S2.
Add I2S character driver and generic I2S audio driver.
Include i2schar defconfig for ESP32-S2-Saola-1 board.
