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| author | Marek Behún <marek.behun@nic.cz> | 2019-08-12 19:11:16 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-08-14 16:30:49 +0300 |
| commit | 2091b417aab195a2c35abe780ad15ade1b0932ac (patch) | |
| tree | 6f6a65e2b3a91cf917004e8ac2db7e70d052b4d7 | |
| parent | 20e6cf7e747815461ac8bcb526f7079ce48866b5 (diff) | |
| download | linux-2091b417aab195a2c35abe780ad15ade1b0932ac.tar.xz | |
bus: moxtet: Add sysfs and debugfs documentation
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>
| -rw-r--r-- | Documentation/ABI/testing/debugfs-moxtet | 23 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-moxtet-devices | 17 | ||||
| -rw-r--r-- | MAINTAINERS | 2 |
3 files changed, 42 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/debugfs-moxtet b/Documentation/ABI/testing/debugfs-moxtet new file mode 100644 index 000000000000..67b1717794d8 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-moxtet @@ -0,0 +1,23 @@ +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 diff --git a/Documentation/ABI/testing/sysfs-bus-moxtet-devices b/Documentation/ABI/testing/sysfs-bus-moxtet-devices new file mode 100644 index 000000000000..355958527fa3 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-moxtet-devices @@ -0,0 +1,17 @@ +What: /sys/bus/moxtet/devices/moxtet-<name>.<addr>/module_description +Date: March 2019 +KernelVersion: 5.3 +Contact: Marek Behún <marek.behun@nic.cz> +Description: (R) Moxtet module description. Format: string + +What: /sys/bus/moxtet/devices/moxtet-<name>.<addr>/module_id +Date: March 2019 +KernelVersion: 5.3 +Contact: Marek Behún <marek.behun@nic.cz> +Description: (R) Moxtet module ID. Format: %x + +What: /sys/bus/moxtet/devices/moxtet-<name>.<addr>/module_name +Date: March 2019 +KernelVersion: 5.3 +Contact: Marek Behún <marek.behun@nic.cz> +Description: (R) Moxtet module name. Format: string diff --git a/MAINTAINERS b/MAINTAINERS index e0b803ba1418..1869e83f514a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1630,6 +1630,8 @@ ARM/CZ.NIC TURRIS MOX SUPPORT M: Marek Behun <marek.behun@nic.cz> W: http://mox.turris.cz S: Maintained +F: Documentation/ABI/testing/debugfs-moxtet +F: Documentation/ABI/testing/sysfs-bus-moxtet-devices F: Documentation/devicetree/bindings/bus/moxtet.txt F: include/linux/moxtet.h F: drivers/bus/moxtet.c |