# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/qcom/qcom,spm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm Subsystem Power Manager
maintainers:
- Andy Gross <agross@kernel.org>
- Bjorn Andersson <bjorn.andersson@linaro.org>
description: |
This binding describes the Qualcomm Subsystem Power Manager, used to control
the peripheral logic surrounding the application cores in Qualcomm platforms.
properties:
compatible:
items:
- enum:
- qcom,sdm660-gold-saw2-v4.1-l2
- qcom,sdm660-silver-saw2-v4.1-l2
- qcom,msm8998-gold-saw2-v4.1-l2
- qcom,msm8998-silver-saw2-v4.1-l2
- qcom,msm8909-saw2-v3.0-cpu
- qcom,msm8916-saw2-v3.0-cpu
- qcom,msm8939-saw2-v3.0-cpu
- qcom,msm8226-saw2-v2.1-cpu
- qcom,msm8974-saw2-v2.1-cpu
- qcom,msm8976-gold-saw2-v2.3-l2
- qcom,msm8976-silver-saw2-v2.3-l2
- qcom,apq8084-saw2-v2.1-cpu
- qcom,apq8064-saw2-v1.1-cpu
- const: qcom,saw2
reg:
description: Base address and size of the SPM register region
maxItems: 1
required:
- compatible
- reg
additionalProperties: false
examples:
- |
/* Example 1: SoC using SAW2 and kpss-acc-v2 CPUIdle */
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
compatible = "qcom,kryo";
device_type = "cpu";
enable-method = "qcom,kpss-acc-v2";
qcom,saw = <&saw0>;
reg = <0x0>;
operating-points-v2 = <&cpu_opp_table>;
};
};
saw0: power-manager@f9089000 {
compatible = "qcom,msm8974-saw2-v2.1-cpu", "qcom,saw2";
reg = <0xf9089000 0x1000>;
};
- |
/*
* Example 2: New-gen multi cluster SoC using SAW only for L2;
* This does not require any cpuidle driver, nor any cpu phandle.
*/
power-manager@17812000 {
compatible = "qcom,msm8998-gold-saw2-v4.1-l2", "qcom,saw2";
reg = <0x17812000 0x1000>;
};
power-manager@17912000 {
compatible = "qcom,msm8998-silver-saw2-v4.1-l2", "qcom,saw2";
reg = <0x17912000 0x1000>;
};
...