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Diffstat (limited to 'doc/device-tree-bindings/bootcount-syscon.txt')
-rw-r--r-- | doc/device-tree-bindings/bootcount-syscon.txt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/bootcount-syscon.txt b/doc/device-tree-bindings/bootcount-syscon.txt new file mode 100644 index 0000000000..e124f7b614 --- /dev/null +++ b/doc/device-tree-bindings/bootcount-syscon.txt @@ -0,0 +1,24 @@ +Bootcount Configuration +This is the implementation of the feature as described in +https://www.denx.de/wiki/DULG/UBootBootCountLimit. + +Required Properties: +- compatible: must be "u-boot,bootcount-syscon". +- syscon: reference to the syscon device used. +- reg: contains address and size of the register and the location and size of the bootcount value. + The driver supports a 4 bytes register length and 2 and 4 bytes bootcount value length. +- reg-names: must be "syscon_reg", "offset"; + +Example: + ... + syscon0: syscon@0 { + compatible = "sandbox,syscon0"; + reg = <0x10 16>; + }; + ... + bootcount@0 { + compatible = "u-boot,bootcount-syscon"; + syscon = <&syscon0>; + reg = <0x0 0x04>, <0x0 0x04>; + reg-names = "syscon_reg", "offset"; + }; |