From: Srinivas Kandagatla <[email protected]> NVMEM has been in kernel since v4.2 but the ABI document was missing since then. userspace interface did not change since then and seems stable, so this patch documents the nvmem ABI.
Signed-off-by: Srinivas Kandagatla <[email protected]> --- Documentation/ABI/stable/sysfs-bus-nvmem | 19 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 20 insertions(+) create mode 100644 Documentation/ABI/stable/sysfs-bus-nvmem diff --git a/Documentation/ABI/stable/sysfs-bus-nvmem b/Documentation/ABI/stable/sysfs-bus-nvmem new file mode 100644 index 0000000..5923ab4 --- /dev/null +++ b/Documentation/ABI/stable/sysfs-bus-nvmem @@ -0,0 +1,19 @@ +What: /sys/bus/nvmem/devices/.../nvmem +Date: July 2015 +KernelVersion: 4.2 +Contact: Srinivas Kandagatla <[email protected]> +Description: + This file allows user to read/write the raw NVMEM contents. + Permissions for write to this file depends on the nvmem + provider configuration. + + ex: + hexdump /sys/bus/nvmem/devices/qfprom0/nvmem + + 0000000 0000 0000 0000 0000 0000 0000 0000 0000 + * + 00000a0 db10 2240 0000 e000 0c00 0c00 0000 0c00 + 0000000 0000 0000 0000 0000 0000 0000 0000 0000 + ... + * + 0001000 diff --git a/MAINTAINERS b/MAINTAINERS index 205d397..a76e794 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9480,6 +9480,7 @@ M: Srinivas Kandagatla <[email protected]> S: Maintained F: drivers/nvmem/ F: Documentation/devicetree/bindings/nvmem/ +F: Documentation/ABI/stable/sysfs-bus-nvmem F: include/linux/nvmem-consumer.h F: include/linux/nvmem-provider.h -- 2.9.3
