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| author | Marek Behún <kabel@kernel.org> | 2024-07-01 14:30:04 +0300 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2024-07-01 16:46:36 +0300 |
| commit | 992f1a3d4e88498de04b0b13b94705d8540f3d81 (patch) | |
| tree | 1d647916d385987c3f8eb9fc74a48993a60733b0 /Documentation | |
| parent | f5e6f47f2af07e14f29ae509cbab838df93d224c (diff) | |
| download | linux-992f1a3d4e88498de04b0b13b94705d8540f3d81.tar.xz | |
platform: cznic: Add preliminary support for Turris Omnia MCU
Add the basic skeleton for a new platform driver for the microcontroller
found on the Turris Omnia board.
Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20240701113010.16447-3-kabel@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu b/Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu new file mode 100644 index 000000000000..9bc5aad00de0 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-i2c-devices-turris-omnia-mcu @@ -0,0 +1,81 @@ +What: /sys/bus/i2c/devices/<mcu_device>/board_revision +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Contains board revision number. + + Only available if board information is burned in the MCU (older + revisions have board information burned in the ATSHA204-A chip). + + Format: %u. + +What: /sys/bus/i2c/devices/<mcu_device>/first_mac_address +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Contains device first MAC address. Each Turris Omnia is + allocated 3 MAC addresses. The two additional addresses are + computed from the first one by incrementing it. + + Only available if board information is burned in the MCU (older + revisions have board information burned in the ATSHA204-A chip). + + Format: %pM. + +What: /sys/bus/i2c/devices/<mcu_device>/fw_features +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Newer versions of the microcontroller firmware report the + features they support. These can be read from this file. If the + MCU firmware is too old, this file reads 0x0. + + Format: 0x%x. + +What: /sys/bus/i2c/devices/<mcu_device>/fw_version_hash_application +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Contains the version hash (commit hash) of the application + part of the microcontroller firmware. + + Format: %s. + +What: /sys/bus/i2c/devices/<mcu_device>/fw_version_hash_bootloader +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Contains the version hash (commit hash) of the bootloader + part of the microcontroller firmware. + + Format: %s. + +What: /sys/bus/i2c/devices/<mcu_device>/mcu_type +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Contains the microcontroller type (STM32, GD32, MKL). + + Format: %s. + +What: /sys/bus/i2c/devices/<mcu_device>/reset_selector +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Contains the selected factory reset level, determined by + how long the rear reset button was held by the user during board + reset. + + Format: %i. + +What: /sys/bus/i2c/devices/<mcu_device>/serial_number +Date: September 2024 +KernelVersion: 6.11 +Contact: Marek Behún <kabel@kernel.org> +Description: (RO) Contains the 64-bit board serial number in hexadecimal + format. + + Only available if board information is burned in the MCU (older + revisions have board information burned in the ATSHA204-A chip). + + Format: %016X. |