diff options
Diffstat (limited to 'Documentation/devicetree/bindings/barebox/barebox,state.rst')
| -rw-r--r-- | Documentation/devicetree/bindings/barebox/barebox,state.rst | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/Documentation/devicetree/bindings/barebox/barebox,state.rst b/Documentation/devicetree/bindings/barebox/barebox,state.rst index 438cc434a2..00fb592614 100644 --- a/Documentation/devicetree/bindings/barebox/barebox,state.rst +++ b/Documentation/devicetree/bindings/barebox/barebox,state.rst @@ -29,7 +29,8 @@ Required properties: * ``compatible``: should be ``barebox,state``; * ``magic``: A 32bit number used as a magic to identify the state -* ``backend``: describes where the data for this state is stored +* ``backend``: contains a phandle to the device/partition which holds the + actual state data. * ``backend-type``: should be ``raw`` or ``dtb``. Optional properties: @@ -39,9 +40,9 @@ Optional properties: e.g. ``hmac(sha256)``. Only used for ``raw``. * ``backend-stridesize``: Maximum size per copy of the data. Only important for non-MTD devices -* ``backend-storage-type``: Type of the storage. This has two options at the - moment. For MTD with erasing the correct type is ``circular``. For all other - devices and files, ``direct`` is the needed type. +* ``backend-storage-type``: Normally the correct storage type is detected auto- + matically. The circular backend supports the option ``noncircular`` to fall + back to an old storage format. Variable nodes -------------- @@ -77,19 +78,31 @@ Example:: magic = <0x27031977>; compatible = "barebox,state"; backend-type = "raw"; - backend = &eeprom, "partname:state"; + backend = &state_part; foo { - reg = <0x00 0x4>; - type = "uint32"; + reg = <0x00 0x4>; + type = "uint32"; default = <0x0>; }; bar { - reg = <0x10 0x4>; - type = "enum32"; + reg = <0x10 0x4>; + type = "enum32"; names = "baz", "qux"; - default = <1>; + default = <1>; + }; + }; + + &nand_flash { + partitions { + compatible = "fixed-partitions"; + #address-cells = <1>; + #size-cells = <1>; + state_part: state@10000 { + label = "state"; + reg = <0x10000 0x10000>; + }; }; }; |