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+This document defines the sysfs attributes common to the bmc device class. See
+Documentation/devicetree/bindings/misc/bmc-misc-ctrl.txt for exhaustive list of
+field definitions.
+
+What: /sys/class/bmc/<field>/label
+Date: July, 2018
+KernelVersion: v4.19
+Contact: openbmc@lists.ozlabs.org
+Description:
+ The name of the field of interest. Corresponds to the value of
+ <field> in the path
+Users: openbmc@lists.ozlabs.org
+
+What: /sys/class/bmc/<field>/value
+Date: July, 2018
+KernelVersion: v4.19
+Contact: openbmc@lists.ozlabs.org
+Description:
+ The value of the field of interest.
+
+ If the field is exposed from a read-modify-write register this
+ attribute will be RW, where writes will set the field to the
+ value written. Writing values that exceed the width of the
+ field will return an error.
+
+ If the field is exposed from a write-1-set/write-1-clear
+ register this attribute will be RO, and the attributes 'set'
+ and 'clear' will be present as write-only.
+Users: openbmc@lists.ozlabs.org
+
+What: /sys/class/bmc/<field>/mask
+Date: July, 2018
+KernelVersion: v4.19
+Contact: openbmc@lists.ozlabs.org
+Description:
+ The mask applied to the value read/written from the 'value'
+ attribute.
+Users: openbmc@lists.ozlabs.org
+
+What: /sys/class/bmc/<field>/set
+Users: openbmc@lists.ozlabs.org
+Date: July, 2018
+KernelVersion: v4.19
+Contact: openbmc@lists.ozlabs.org
+Description:
+ For fields backed by write-1-set/write-1-clear registers,
+ set bits in the value written will be set in hardware. Zero
+ values are ignored. Writing values that exceed the width of the
+ mask value will return an error.
+Users: openbmc@lists.ozlabs.org
+
+What: /sys/class/bmc/<field>/clear
+Users: openbmc@lists.ozlabs.org
+Date: July, 2018
+KernelVersion: v4.19
+Contact: openbmc@lists.ozlabs.org
+Description:
+ For fields backed by write-1-set/write-1-clear registers,
+ set bits in the value written will be cleared in hardware. Zero
+ values are ignored. Writing values that exceed the width of the
+ mask value will return an error.
+Users: openbmc@lists.ozlabs.org
Signed-off-by: Andrew Jeffery <andrew@aj.id.au> --- Documentation/ABI/testing/sysfs-class-bmc | 62 +++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-class-bmc