3cc74f1140
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>
20 lines
871 B
Plaintext
20 lines
871 B
Plaintext
# Copyright 2020 Google LLC
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# SPDX-License-Identifier: Apache-2.0
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config ESPI_EMUL
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bool "eSPI emulator"
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default y
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depends on DT_HAS_ZEPHYR_ESPI_EMUL_CONTROLLER_ENABLED
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depends on EMUL
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help
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Enable the eSPI emulator driver. This is a fake driver,
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it does not talk to real hardware. Instead it talks to emulation
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drivers that pretend to be devices on the emulated eSPI bus. It is
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used for testing drivers for eSPI devices.
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eSPI is an interface using SPI wires, whose main goal is to reduce the
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number of required pins. It includes the functionality of LPC, SMB, SPI
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itself (flash access) and GPIO (virtual wires). Please refer to the
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specification for more details (it is good for the introduction as well)
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https://www.intel.com/content/dam/support/us/en/documents/software/chipset-software/327432-004_espi_base_specification_rev1.0_cb.pdf
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