[PATCH] Device Tree bindings for DSP clusters and DSP CPUs
From: Poonam Aggrwal <hidden>
Date: 2013-08-21 09:21:47
Subsystem:
linux for powerpc (32-bit and 64-bit), linux for powerpc embedded ppc85xx, open firmware and flattened device tree bindings, the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Scott Wood, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- .../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