diff options
Diffstat (limited to 'Documentation/ABI/stable/sysfs-bus-nvmem')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-bus-nvmem | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/Documentation/ABI/stable/sysfs-bus-nvmem b/Documentation/ABI/stable/sysfs-bus-nvmem index c399323f37de..aa89adf18bc5 100644 --- a/Documentation/ABI/stable/sysfs-bus-nvmem +++ b/Documentation/ABI/stable/sysfs-bus-nvmem @@ -1,6 +1,23 @@ +What: /sys/bus/nvmem/devices/.../force_ro +Date: June 2024 +KernelVersion: 6.11 +Contact: Marek Vasut <marex@denx.de> +Description: + This read/write attribute allows users to set read-write + devices as read-only and back to read-write from userspace. + This can be used to unlock and relock write-protection of + devices which are generally locked, except during sporadic + programming operation. + Read returns '0' or '1' for read-write or read-only modes + respectively. + Write parses one of 'YyTt1NnFf0', or [oO][NnFf] for "on" + and "off", i.e. what kstrbool() supports. + Note: This file is only present if CONFIG_NVMEM_SYSFS + is enabled. + What: /sys/bus/nvmem/devices/.../nvmem Date: July 2015 -KernelVersion: 4.2 +KernelVersion: 4.2 Contact: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Description: This file allows user to read/write the raw NVMEM contents. @@ -20,3 +37,14 @@ Description: ... * 0001000 + +What: /sys/bus/nvmem/devices/.../type +Date: November 2018 +KernelVersion: 5.0 +Contact: Alexandre Belloni <alexandre.belloni@bootlin.com> +Description: + This read-only attribute allows user to read the NVMEM + device type. Supported types are "Unknown", "EEPROM", + "OTP", "Battery backed", "FRAM". + Note: This file is only present if CONFIG_NVMEM_SYSFS + is enabled. |