| # 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_SCOM |
| tristate "SCOM FSI client device driver" |
| ---help--- |
| This option enables an FSI based SCOM device driver. |
| |
| config FSI_SBEFIFO |
| tristate "SBEFIFO FSI client device driver" |
| depends on OF_ADDRESS |
| ---help--- |
| This option enables an FSI based SBEFIFO device driver. The SBEFIFO is |
| a pipe-like FSI device for communicating with the self boot engine |
| (SBE) on POWER processors. |
| |
| config FSI_OCC |
| tristate "OCC SBEFIFO client device driver" |
| depends on FSI_SBEFIFO |
| ---help--- |
| This option enables an SBEFIFO based On-Chip Controller (OCC) device |
| driver. The OCC is a device embedded on a POWER processor that collects |
| and aggregates sensor data from the processor and system. The OCC can |
| provide the raw sensor data as well as perform thermal and power |
| management on the system. |
| |
| endif |
