drivers/fsi/Kconfig

Source file repositories/reference/linux-study-clean/drivers/fsi/Kconfig

File Facts

System
Linux kernel
Corpus path
drivers/fsi/Kconfig
Extension
[no extension]
Size
3277 bytes
Lines
106
Domain
Driver Families
Bucket
drivers/fsi
Inferred role
Driver Families: build/configuration rule
Status
atlas-only

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only
#
# FSI subsystem
#

menuconfig FSI
	tristate "FSI support"
	depends on OF
	select CRC4
	help
	  FSI - the FRU Support Interface - is a simple bus for low-level
	  access to POWER-based hardware.

if FSI

config FSI_NEW_DEV_NODE
	bool "Create '/dev/fsi' directory for char devices"
	default n
	help
	This option causes char devices created for FSI devices to be
	located under a common /dev/fsi/ directory. Set to N unless your
	userspace has been updated to handle the new location.

	Additionally, it also causes the char device names to be offset
	by one so that chip 0 will have /dev/scom1 and chip1 /dev/scom2
	to match old userspace expectations.

	New userspace will use udev rules to generate predictable access
	symlinks in /dev/fsi/by-path when this option is enabled.

config FSI_MASTER_GPIO
	tristate "GPIO-based FSI master"
	depends on GPIOLIB
	select CRC4
	help
	This option enables a FSI master driver using GPIO lines.

config FSI_MASTER_HUB
	tristate "FSI hub master"
	help
	This option enables a FSI hub master driver.  Hub is a type of FSI
	master that is connected to the upstream master via a slave.  Hubs
	allow chaining of FSI links to an arbitrary depth.  This allows for
	a high target device fanout.

config FSI_MASTER_AST_CF
	tristate "FSI master based on Aspeed ColdFire coprocessor"
	depends on GPIOLIB
	depends on GPIO_ASPEED
	select GENERIC_ALLOCATOR
	help
	This option enables a FSI master using the AST2400 and AST2500 GPIO
	lines driven by the internal ColdFire coprocessor. This requires
	the corresponding machine specific ColdFire firmware to be available.

config FSI_MASTER_ASPEED
	tristate "FSI ASPEED master"
	depends on HAS_IOMEM
	help
	 This option enables a FSI master that is present behind an OPB bridge
	 in the AST2600.

	 Enable it for your BMC kernel in an OpenPower or IBM Power system.

config FSI_MASTER_I2CR
	tristate "IBM I2C Responder virtual FSI master"
	depends on I2C
	help
	  This option enables a virtual FSI master in order to access a CFAM
	  behind an IBM I2C Responder (I2CR) chip. The I2CR is an I2C device

Annotation

Implementation Notes