102 lines
2.5 KiB
YAML
102 lines
2.5 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/soc/qcom/qcom,rpm.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Resource Power Manager (RPM)
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description:
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This driver is used to interface with the Resource Power Manager (RPM) found
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in various Qualcomm platforms. The RPM allows each component in the system
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to vote for state of the system resources, such as clocks, regulators and bus
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frequencies.
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maintainers:
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- Bjorn Andersson <andersson@kernel.org>
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properties:
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compatible:
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enum:
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- qcom,rpm-apq8064
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- qcom,rpm-msm8660
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- qcom,rpm-msm8960
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- qcom,rpm-ipq8064
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- qcom,rpm-mdm9615
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reg:
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maxItems: 1
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interrupts:
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maxItems: 3
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interrupt-names:
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items:
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- const: ack
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- const: err
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- const: wakeup
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qcom,ipc:
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$ref: /schemas/types.yaml#/definitions/phandle-array
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items:
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- items:
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- description: phandle to a syscon node representing the APCS registers
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- description: u32 representing offset to the register within the syscon
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- description: u32 representing the ipc bit within the register
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description:
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Three entries specifying the outgoing ipc bit used for signaling the RPM.
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patternProperties:
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"^regulators(-[01])?$":
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type: object
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$ref: /schemas/regulator/qcom,rpm-regulator.yaml#
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unevaluatedProperties: false
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required:
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- compatible
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- reg
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- interrupts
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- interrupt-names
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- qcom,ipc
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/mfd/qcom-rpm.h>
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rpm@108000 {
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compatible = "qcom,rpm-msm8960";
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reg = <0x108000 0x1000>;
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qcom,ipc = <&apcs 0x8 2>;
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interrupts = <GIC_SPI 19 IRQ_TYPE_NONE>, <GIC_SPI 21 IRQ_TYPE_NONE>, <GIC_SPI 22 IRQ_TYPE_NONE>;
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interrupt-names = "ack", "err", "wakeup";
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regulators {
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compatible = "qcom,rpm-pm8921-regulators";
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vdd_l1_l2_l12_l18-supply = <&pm8921_s4>;
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s1 {
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regulator-min-microvolt = <1225000>;
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regulator-max-microvolt = <1225000>;
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bias-pull-down;
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qcom,switch-mode-frequency = <3200000>;
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};
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pm8921_s4: s4 {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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qcom,switch-mode-frequency = <1600000>;
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bias-pull-down;
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qcom,force-mode = <QCOM_RPM_FORCE_MODE_AUTO>;
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};
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};
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};
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