From c26bbb3ca9c4c58b886497efbeccac7cbd9e98a4 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Wed, 26 Jul 2017 12:09:02 +0200 Subject: [PATCH] Documentation/ABI: document the nvmem sysfs files 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 Signed-off-by: Greg Kroah-Hartman --- 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 000000000000..5923ab4620c5 --- /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 +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 58c3bb7fc615..999dce6a8115 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9466,6 +9466,7 @@ M: Srinivas Kandagatla 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 -- 2.20.1