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Regards
Poonam
> -----Original Message-----
> From: Aggrwal Poonam-B10812
> Sent: Wednesday, August 21, 2013 2:51 PM
> To: devicetree@xxxxxxxxxxxxxxx
> Cc: Aggrwal Poonam-B10812
> Subject: [PATCH] Device Tree bindings for DSP clusters and DSP CPUs
>
> Binding for DSP CPU clusters and DSP CPUs for Freescale SOCs which have
> DSP CPUs in addition to PowerPC CPUs. For example B4860.
>
> Signed-off-by: Poonam Aggrwal <poonam.aggrwal@xxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/powerpc/fsl/dsp-cpus.txt | 78
> ++++++++++++++++++++
> 1 files changed, 78 insertions(+), 0 deletions(-) create mode 100644
> Documentation/devicetree/bindings/powerpc/fsl/dsp-cpus.txt
>
> diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dsp-cpus.txt
> b/Documentation/devicetree/bindings/powerpc/fsl/dsp-cpus.txt
> new file mode 100644
> index 0000000..da7f5d4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/powerpc/fsl/dsp-cpus.txt
> @@ -0,0 +1,78 @@
> +===================================================================
> +Binding for DSP CPU clusters and DSP CPUs for Freescale SOCs which have
> +DSP CPUs in addition to PowerPC cpus.
> +Copyright 2013 Freescale Semiconductor Inc.
> +
> +Power Architecture CPUs in Freescale SOCs are represented in device
> +trees as per the definition in ePAPR.
> +
> +Required properties for DSP CPU cluster:
> +- compatible : should be "fsl,dsp-cluster" or "fsl,sc3900-cluster".
> +- reg : should contain the cluster index
> +
> +Required properties for DSP CPU:
> +- compatible : should be "fsl,dsp" or "fsl,sc3900".
> +- reg : should contain index of DSP CPU within the DSP clsuter.
> +- next-level-cache : should point to the phandle of the next-level L2
> cache.
> +
> +Example for B4860:
> +B4860 SOC of Freescale has 3 DSP clusters. Each DSP cluster has 2 DSP
> CPUs each.
> +The DSP CPUs are SC3900. There is a shared L2 cache per DSP cluster.
> + dsp-clusters {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + dsp-cluster0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + compatible = "fsl,sc3900-cluster";
> + reg = <0>;
> +
> + dsp0: dsp@0 {
> + compatible = "fsl,sc3900";
> + reg = <0>;
> + next-level-cache = <&L2_2>;
> + };
> + dsp1: dsp@1 {
> + compatible = "fsl,sc3900";
> + reg = <1>;
> + next-level-cache = <&L2_2>;
> + };
> + };
> +
> + dsp-cluster1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + compatible = "fsl,sc3900-cluster";
> + reg = <1>;
> +
> + dsp2: dsp@2 {
> + compatible = "fsl,sc3900";
> + reg = <2>;
> + next-level-cache = <&L2_3>;
> + };
> + dsp3: dsp@3 {
> + compatible = "fsl,sc3900";
> + reg = <3>;
> + next-level-cache = <&L2_3>;
> + };
> + };
> +
> + dsp-cluster2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + compatible = "fsl,sc3900-cluster";
> + reg = <2>;
> +
> + dsp4: dsp@4 {
> + compatible = "fsl,sc3900";
> + reg = <4>;
> + next-level-cache = <&L2_4>;
> + };
> + dsp5: dsp@5 {
> + compatible = "fsl,sc3900";
> + reg = <5>;
> + next-level-cache = <&L2_4>;
> + };
> + };
> + };
> --
> 1.7.4.1
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