Add device-tree binding documentation to represent Tegra194 CPU Complex with compatible string under 'cpus' node. This can be used by drivers like cpufreq which don't have their node or CPU Complex node to bind to. Also, documenting 'nvidia,bpmp' property which points to BPMP device. Signed-off-by: Sumit Gupta <sumitg@xxxxxxxxxx> --- .../bindings/arm/nvidia,tegra194-ccplex.yaml | 106 +++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml diff --git a/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml b/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml new file mode 100644 index 0000000..06dbdaa --- /dev/null +++ b/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml @@ -0,0 +1,106 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/arm/nvidia,tegra194-ccplex.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: NVIDIA Tegra194 CPU Complex device tree bindings + +maintainers: + - Thierry Reding <thierry.reding@xxxxxxxxx> + - Jonathan Hunter <jonathanh@xxxxxxxxxx> + - Sumit Gupta <sumitg@xxxxxxxxxx> + +description: |+ + Tegra194 SOC has homogeneous architecture where each cluster has two + symmetric cores. Compatible string in "cpus" node represents the CPU + Complex having all clusters. + +properties: + compatible: + enum: + - nvidia,tegra194-ccplex + + nvidia,bpmp: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: | + Specifies the bpmp node that needs to be queried to get + operating point data for all CPUs. + + Optional for systems that have a "compatible" + property value of "nvidia,tegra194-ccplex". + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +dependencies: + nvidia,bpmp: [compatible] + +examples: + - | + cpus { + compatible = "nvidia,tegra194-ccplex"; + nvidia,bpmp = <&bpmp>; + #address-cells = <1>; + #size-cells = <0>; + + cpu0_0: cpu@0 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x0>; + enable-method = "psci"; + }; + + cpu0_1: cpu@1 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x001>; + enable-method = "psci"; + }; + + cpu1_0: cpu@100 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x100>; + enable-method = "psci"; + }; + + cpu1_1: cpu@101 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x101>; + enable-method = "psci"; + }; + + cpu2_0: cpu@200 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x200>; + enable-method = "psci"; + }; + + cpu2_1: cpu@201 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x201>; + enable-method = "psci"; + }; + + cpu3_0: cpu@300 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x300>; + enable-method = "psci"; + }; + + cpu3_1: cpu@301 { + compatible = "nvidia,tegra194-carmel"; + device_type = "cpu"; + reg = <0x301>; + enable-method = "psci"; + }; + }; +... -- 2.7.4
