mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-20 17:46:59 +07:00
2091b417aa
Add sysfs ABI documentation for the attribute files module_id and module_name Add debugfs ABI documentation for reading input from the shift registers and reading last written output or write output to the shift registers. Link: https://lore.kernel.org/r/20190812161118.21476-4-marek.behun@nic.cz Signed-off-by: Marek Behún <marek.behun@nic.cz> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
24 lines
860 B
Plaintext
24 lines
860 B
Plaintext
What: /sys/kernel/debug/moxtet/input
|
|
Date: March 2019
|
|
KernelVersion: 5.3
|
|
Contact: Marek Behún <marek.behun@nic.cz>
|
|
Description: (R) Read input from the shift registers, in hexadecimal.
|
|
Returns N+1 bytes, where N is the number of Moxtet connected
|
|
modules. The first byte is from the CPU board itself.
|
|
Example: 101214
|
|
10: CPU board with SD card
|
|
12: 2 = PCIe module, 1 = IRQ not active
|
|
14: 4 = Peridot module, 1 = IRQ not active
|
|
|
|
What: /sys/kernel/debug/moxtet/output
|
|
Date: March 2019
|
|
KernelVersion: 5.3
|
|
Contact: Marek Behún <marek.behun@nic.cz>
|
|
Description: (RW) Read last written value to the shift registers, in
|
|
hexadecimal, or write values to the shift registers, also
|
|
in hexadecimal.
|
|
Example: 0102
|
|
01: 01 was last written, or is to be written, to the
|
|
first module's shift register
|
|
02: the same for second module
|