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940c2361b5
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>
47 lines
1.0 KiB
Plaintext
47 lines
1.0 KiB
Plaintext
--------------------------------------------------------------------------
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= Zynq UltraScale+ MPSoC nvmem firmware driver binding =
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--------------------------------------------------------------------------
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The nvmem_firmware node provides access to the hardware related data
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like soc revision, IDCODE... etc, By using the firmware interface.
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Required properties:
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- compatible: should be "xlnx,zynqmp-nvmem-fw"
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= Data cells =
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Are child nodes of silicon id, bindings of which as described in
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bindings/nvmem/nvmem.txt
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-------
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Example
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-------
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firmware {
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zynqmp_firmware: zynqmp-firmware {
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compatible = "xlnx,zynqmp-firmware";
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method = "smc";
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nvmem_firmware {
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compatible = "xlnx,zynqmp-nvmem-fw";
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#address-cells = <1>;
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#size-cells = <1>;
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/* Data cells */
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soc_revision: soc_revision {
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reg = <0x0 0x4>;
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};
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};
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};
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};
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= Data consumers =
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Are device nodes which consume nvmem data cells.
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For example:
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pcap {
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...
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nvmem-cells = <&soc_revision>;
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nvmem-cell-names = "soc_revision";
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...
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};
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