tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0-only
2#
3# FSI subsystem
4#
5
6menuconfig FSI
7 tristate "FSI support"
8 depends on OF
9 select CRC4
10 ---help---
11 FSI - the FRU Support Interface - is a simple bus for low-level
12 access to POWER-based hardware.
13
14if FSI
15
16config FSI_NEW_DEV_NODE
17 bool "Create '/dev/fsi' directory for char devices"
18 default n
19 ---help---
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.
23
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.
27
28 New userspace will use udev rules to generate predictable access
29 symlinks in /dev/fsi/by-path when this option is enabled.
30
31config FSI_MASTER_GPIO
32 tristate "GPIO-based FSI master"
33 depends on GPIOLIB
34 select CRC4
35 ---help---
36 This option enables a FSI master driver using GPIO lines.
37
38config FSI_MASTER_HUB
39 tristate "FSI hub master"
40 ---help---
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.
45
46config FSI_MASTER_AST_CF
47 tristate "FSI master based on Aspeed ColdFire coprocessor"
48 depends on GPIOLIB
49 depends on GPIO_ASPEED
50 select GENERIC_ALLOCATOR
51 ---help---
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.
55
56config FSI_SCOM
57 tristate "SCOM FSI client device driver"
58 ---help---
59 This option enables an FSI based SCOM device driver.
60
61config FSI_SBEFIFO
62 tristate "SBEFIFO FSI client device driver"
63 depends on OF_ADDRESS
64 ---help---
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.
68
69config FSI_OCC
70 tristate "OCC SBEFIFO client device driver"
71 depends on FSI_SBEFIFO
72 ---help---
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.
78
79endif