Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
121 lines
3.6 KiB
YAML
121 lines
3.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/soc/qcom/qcom,saw2.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Qualcomm Subsystem Power Manager / SPM AVS Wrapper 2 (SAW2)
|
|
|
|
maintainers:
|
|
- Andy Gross <agross@kernel.org>
|
|
- Bjorn Andersson <bjorn.andersson@linaro.org>
|
|
|
|
description: |
|
|
The Qualcomm Subsystem Power Manager is used to control the peripheral logic
|
|
surrounding the application cores in Qualcomm platforms.
|
|
|
|
The SAW2 is a wrapper around the Subsystem Power Manager (SPM) and the
|
|
Adaptive Voltage Scaling (AVS) hardware. The SPM is a programmable
|
|
power-controller that transitions a piece of hardware (like a processor or
|
|
subsystem) into and out of low power modes via a direct connection to
|
|
the PMIC. It can also be wired up to interact with other processors in the
|
|
system, notifying them when a low power state is entered or exited.
|
|
|
|
properties:
|
|
compatible:
|
|
items:
|
|
- enum:
|
|
- qcom,ipq4019-saw2-cpu
|
|
- qcom,ipq4019-saw2-l2
|
|
- qcom,ipq8064-saw2-cpu
|
|
- 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,msm8226-saw2-v2.1-l2
|
|
- qcom,msm8960-saw2-cpu
|
|
- qcom,msm8974-saw2-v2.1-cpu
|
|
- qcom,msm8974-saw2-v2.1-l2
|
|
- qcom,msm8976-gold-saw2-v2.3-l2
|
|
- qcom,msm8976-silver-saw2-v2.3-l2
|
|
- qcom,apq8084-saw2-v2.1-cpu
|
|
- qcom,apq8084-saw2-v2.1-l2
|
|
- qcom,apq8064-saw2-v1.1-cpu
|
|
- const: qcom,saw2
|
|
|
|
reg:
|
|
items:
|
|
- description: Base address and size of the SPM register region
|
|
- description: Base address and size of the alias register region
|
|
minItems: 1
|
|
|
|
regulator:
|
|
$ref: /schemas/regulator/regulator.yaml#
|
|
description: Indicates that this SPM device acts as a regulator device
|
|
device for the core (CPU or Cache) the SPM is attached to.
|
|
|
|
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 = "arm,cortex-a53";
|
|
device_type = "cpu";
|
|
enable-method = "qcom,kpss-acc-v2";
|
|
qcom,acc = <&acc0>;
|
|
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>;
|
|
};
|
|
|
|
- |
|
|
/*
|
|
* Example 3: SAW2 with the bundled regulator definition.
|
|
*/
|
|
power-manager@2089000 {
|
|
compatible = "qcom,apq8064-saw2-v1.1-cpu", "qcom,saw2";
|
|
reg = <0x02089000 0x1000>, <0x02009000 0x1000>;
|
|
|
|
regulator {
|
|
regulator-min-microvolt = <850000>;
|
|
regulator-max-microvolt = <1300000>;
|
|
};
|
|
};
|
|
...
|