1 # SPDX-License-Identifier: GPL-2.0-only
11 FSI - the FRU Support Interface - is a simple bus for low-level
12 access to POWER-based hardware.
16 config FSI_NEW_DEV_NODE
17 bool "Create '/dev/fsi' directory for char devices"
20 This option causes char devices created for FSI devices to be
21 located under a common /dev/fsi/ directory. Set to N unless your
22 userspace has been updated to handle the new location.
24 Additionally, it also causes the char device names to be offset
25 by one so that chip 0 will have /dev/scom1 and chip1 /dev/scom2
26 to match old userspace expectations.
28 New userspace will use udev rules to generate predictable access
29 symlinks in /dev/fsi/by-path when this option is enabled.
31 config FSI_MASTER_GPIO
32 tristate "GPIO-based FSI master"
36 This option enables a FSI master driver using GPIO lines.
39 tristate "FSI hub master"
41 This option enables a FSI hub master driver. Hub is a type of FSI
42 master that is connected to the upstream master via a slave. Hubs
43 allow chaining of FSI links to an arbitrary depth. This allows for
44 a high target device fanout.
46 config FSI_MASTER_AST_CF
47 tristate "FSI master based on Aspeed ColdFire coprocessor"
49 depends on GPIO_ASPEED
50 select GENERIC_ALLOCATOR
52 This option enables a FSI master using the AST2400 and AST2500 GPIO
53 lines driven by the internal ColdFire coprocessor. This requires
54 the corresponding machine specific ColdFire firmware to be available.
57 tristate "SCOM FSI client device driver"
59 This option enables an FSI based SCOM device driver.
62 tristate "SBEFIFO FSI client device driver"
65 This option enables an FSI based SBEFIFO device driver. The SBEFIFO is
66 a pipe-like FSI device for communicating with the self boot engine
67 (SBE) on POWER processors.
70 tristate "OCC SBEFIFO client device driver"
71 depends on FSI_SBEFIFO
73 This option enables an SBEFIFO based On-Chip Controller (OCC) device
74 driver. The OCC is a device embedded on a POWER processor that collects
75 and aggregates sensor data from the processor and system. The OCC can
76 provide the raw sensor data as well as perform thermal and power
77 management on the system.