9b25d3f425
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@nvidia.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
70 lines
1.7 KiB
YAML
70 lines
1.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%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@gmail.com>
|
|
- Jonathan Hunter <jonathanh@nvidia.com>
|
|
- Sumit Gupta <sumitg@nvidia.com>
|
|
|
|
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:
|
|
$nodename:
|
|
const: cpus
|
|
|
|
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.
|
|
|
|
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";
|
|
};
|
|
};
|
|
...
|