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zephyr/drivers/espi/Kconfig.espi_emul

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emul: espi: Add support for eSPI emulators Add an emulation controller which routes eSPI traffic to attached emulators depending on the selected chip(mostly host). This allows drivers for eSPI peripherals to be tested on systems that don't have that peripheral attached, with the emulator handling the eSPI traffic. Signed-off-by: Dawid Niedzwiecki <dn@semihalf.com>
2020-12-16 22:07:27 +08:00
# Copyright 2020 Google LLC
# SPDX-License-Identifier: Apache-2.0
config ESPI_EMUL
bool "eSPI emulator"
drivers: espi: enable ESPI_EMUL automatically Enable ESPI_EMUL automatically based on the corresponding devicetree compatible. Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
2022-11-22 18:59:29 +08:00
default y
depends on DT_HAS_ZEPHYR_ESPI_EMUL_CONTROLLER_ENABLED
emul: Make ESPI/I2C_EMUL depend on EMUL The emulated espi and i2c bus controllers do not depend on CONFIG_EMUL being enabled. When these fake bus controllers are enabled by their assoicated compatible in the devicetree without CONFIG_EMUL it results in linker failures for underlying peripheral emulators which may be difficult to understand. The SPI config already depends on EMUL. Make the ESPI and I2C emulated controllers depend on CONFIG_EMUL. Note: This still allows linker failures if CONFIG_EMUL=n, but the linker failures will be consistently at device driver instantiation due to a missing bus controller. Regardless, this will be easier to debug when someone forgets to enable CONFIG_EMUL. Signed-off-by: Aaron Massey <aaronmassey@google.com>
2023-05-05 05:27:36 +08:00
depends on EMUL
emul: espi: Add support for eSPI emulators Add an emulation controller which routes eSPI traffic to attached emulators depending on the selected chip(mostly host). This allows drivers for eSPI peripherals to be tested on systems that don't have that peripheral attached, with the emulator handling the eSPI traffic. Signed-off-by: Dawid Niedzwiecki <dn@semihalf.com>
2020-12-16 22:07:27 +08:00
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