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Signed-off-by: Nava kishore Manne --- Changes for v3: -None. Changes for v2: -Moved nvmem_firmware node as a child to firwmare node. .../firmware/xilinx/xlnx,zynqmp-firmware.txt | 35 +++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt index 1b431d9bbe44..4b95fcc4dcb3 100644 --- a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt +++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt @@ -17,6 +17,19 @@ Required properties: - "smc" : SMC #0, following the SMCCC - "hvc" : HVC #0, following the SMCCC +-------------------------------------------------------------------------- += 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 ------- @@ -25,5 +38,27 @@ 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"; + }; + -- 2.18.0