DT_INST* should be used in MSPI_CONFIG or device tree value capture
will fail sliently and fall back to defaults.
Signed-off-by: Swift Tian <swift.tian@ambiq.com>
REG_X_BASEADDR will be removed from all hal files.
This forces the use of the peripheral base address
Define MSPI_PORT macro for chip drivers
Signed-off-by: Richard Wheatley <richard.wheatley@ambiq.com>
The Ambiq MSPI controller is implemented using the MSPI bus API.
The hardware supports up to 48MHz octal SDR with XIP, scrambling and
hardware command queue features.
Signed-off-by: Swift Tian <swift.tian@ambiq.com>
Add bus emulator support for MSPI and the MSPI controller emulator.
The mspi_emul.c not only serves as an emulator but also provides an
example implementation of the MSPI API. It does not actually do anything
other than validating parameters and forwarding transceive request back
to the device driver emulators.
Signed-off-by: Swift Tian <swift.tian@ambiq.com>
The MSPI(multi-bit SPI) is provided as a generic API to accommodate
advanced SPI peripherals and devices that typically require command,
address and data phases, and multiple signal lines during these phases.
While the API supports advanced features such as XIP eXecute In Place
and scrambling, it is also compatible with generic SPI.
Signed-off-by: Swift Tian <swift.tian@ambiq.com>
Swift Tian