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SubjectRe: [RFC PATCH v2 2/3] dt-bindings: fpga: Add bindings for ZynqMP nvmem driver
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Hi Rob,

Do you have any comments on the bindings side of it.

I would like to queue this for next release..


On 04/09/18 10:52, Nava kishore Manne wrote:
> Add documentation to describe Xilinx ZynqMP nvmem driver
> bindings.
>
> Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> ---
> 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 1b431d9..4b95fcc 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";
> + };
> +
>
Thanks,
srni

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