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author | Nava kishore Manne <nava.manne@xilinx.com> | 2019-02-06 16:37:20 +0530 |
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committer | Michal Simek <michal.simek@xilinx.com> | 2019-02-05 13:23:11 +0100 |
commit | 940c2361b56ac82a555ce88d77bf18e80a8f31d0 (patch) | |
tree | 32cdccdc1c9a375f85b852da2ea1eaef68b6f889 /Documentation/devicetree/bindings/nvmem | |
parent | fe6f42cf6eb3183ebd6ab6b0b7dcbee2600c2baa (diff) | |
download | linux-940c2361b56ac82a555ce88d77bf18e80a8f31d0.tar.bz2 |
dt-bindings: nvmem: Add bindings for ZynqMP nvmem driver
Add documentation to describe Xilinx ZynqMP nvmem driver
bindings.
Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'Documentation/devicetree/bindings/nvmem')
-rw-r--r-- | Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt new file mode 100644 index 000000000000..4881561b3a02 --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt @@ -0,0 +1,46 @@ +-------------------------------------------------------------------------- += Zynq UltraScale+ MPSoC nvmem firmware driver binding = +-------------------------------------------------------------------------- +The nvmem_firmware node provides access to the hardware related data +like soc revision, IDCODE... etc, By using the firmware interface. + +Required properties: +- compatible: should be "xlnx,zynqmp-nvmem-fw" + += Data cells = +Are child nodes of silicon id, bindings of which as described in +bindings/nvmem/nvmem.txt + +------- + Example +------- +firmware { + zynqmp_firmware: zynqmp-firmware { + compatible = "xlnx,zynqmp-firmware"; + method = "smc"; + + nvmem_firmware { + compatible = "xlnx,zynqmp-nvmem-fw"; + #address-cells = <1>; + #size-cells = <1>; + + /* Data cells */ + soc_revision: soc_revision { + reg = <0x0 0x4>; + }; + }; + }; +}; + += Data consumers = +Are device nodes which consume nvmem data cells. + +For example: + pcap { + ... + + nvmem-cells = <&soc_revision>; + nvmem-cell-names = "soc_revision"; + + ... + }; |