On Mon, May 02, 2016 at 12:35:04PM +0530, Sanchayan Maity wrote:
> Add device tree binding documentation for Vybrid SoC.
>
> Signed-off-by: Sanchayan Maity <maitysanchayan@xxxxxxxxx>
> ---
> .../bindings/arm/freescale/fsl,vf610-soc.txt | 35 ++++++++++++++++++++++
> 1 file changed, 35 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/arm/freescale/fsl,vf610-soc.txt
>
> diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,vf610-soc.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,vf610-soc.txt
> new file mode 100644
> index 0000000..bdd95e8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,vf610-soc.txt
> @@ -0,0 +1,35 @@
> +Vybrid System-on-Chip
> +---------------------
> +
> +Required properties:
> +
> +- #address-cells: must be 1
> +- #size-cells: must be 1
> +- compatible: "fsl,vf610-soc-bus", "simple-bus"
If this is a bus, put the file in bindings/bus/...
> +- interrupt-parent: phandle to the MSCM interrupt router node
> +- ranges
> +- fsl,rom-revision: phandle to the on-chip ROM node and address of rom
> + revision register
Why is this needed here? Can't you search the tree for the ROM node and
get this info.
> +- fsl,cpu-count: phandle to the MSCM CPU configuration node and address of
> + CPU count register
> +- fsl,l2-size: phandle to the MSCM CPU configuration node and address of
> + L2 cache size register
> +- nvmem-cells: phandles to two OCOTP child nodes ocotp_cfg0 and ocotp_cfg1
> +- nvmem-cell-names: should contain string names "cfg0" and "cfg1"
How are all these properties used?
> +
> +Example:
> +
> + soc {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "fsl,vf610-soc-bus", "simple-bus";
> + interrupt-parent = <&mscm_ir>;
> + ranges;
> + fsl,rom-revision = <&ocrom 0x80>;
> + fsl,cpu-count = <&mscm_cpucfg 0x2C>;
> + fsl,l2-size = <&mscm_cpucfg 0x14>;
> + nvmem-cells = <&ocotp_cfg0>, <&ocotp_cfg1>;
> + nvmem-cell-names = "cfg0", "cfg1";
> +
> + ...
> + };
> --
> 2.8.2
>
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