20 lines
871 B
Plaintext
20 lines
871 B
Plaintext
# Copyright 2020 Google LLC
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
config ESPI_EMUL
|
|
bool "eSPI emulator"
|
|
default y
|
|
depends on DT_HAS_ZEPHYR_ESPI_EMUL_CONTROLLER_ENABLED
|
|
depends on EMUL
|
|
help
|
|
Enable the eSPI emulator driver. This is a fake driver,
|
|
it does not talk to real hardware. Instead it talks to emulation
|
|
drivers that pretend to be devices on the emulated eSPI bus. It is
|
|
used for testing drivers for eSPI devices.
|
|
|
|
eSPI is an interface using SPI wires, whose main goal is to reduce the
|
|
number of required pins. It includes the functionality of LPC, SMB, SPI
|
|
itself (flash access) and GPIO (virtual wires). Please refer to the
|
|
specification for more details (it is good for the introduction as well)
|
|
https://www.intel.com/content/dam/support/us/en/documents/software/chipset-software/327432-004_espi_base_specification_rev1.0_cb.pdf
|