96 lines
2.7 KiB
YAML
96 lines
2.7 KiB
YAML
# 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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$id: http://devicetree.org/schemas/slimbus/slimbus.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: SLIM (Serial Low Power Interchip Media) bus
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maintainers:
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- Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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description:
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SLIMbus is a 2-wire bus, and is used to communicate with peripheral
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components like audio-codec.
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properties:
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$nodename:
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pattern: "^slim(@.*|-([0-9]|[1-9][0-9]+))?$"
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"#address-cells":
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const: 2
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"#size-cells":
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const: 0
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patternProperties:
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"^.*@[0-9a-f]+,[0-9a-f]+$":
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type: object
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description: |
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Every SLIMbus controller node can contain zero or more child nodes
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representing slave devices on the bus. Every SLIMbus slave device is
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uniquely determined by the enumeration address containing 4 fields::
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Manufacturer ID, Product code, Device index, and Instance value for the
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device.
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If child node is not present and it is instantiated after device
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discovery (slave device reporting itself present).
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In some cases it may be necessary to describe non-probeable device
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details such as non-standard ways of powering up a device. In such cases,
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child nodes for those devices will be present as slaves of the SLIMbus
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controller.
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properties:
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compatible:
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pattern: "^slim[0-9a-f]+,[0-9a-f]+$"
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reg:
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maxItems: 1
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description: |
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Pair of (device index, instande ID), where::
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- Device index, which uniquely identifies multiple devices within a
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single component.
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- Instance ID, can be used for the cases where multiple devices of
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the same type or class are attached to the bus.
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required:
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- compatible
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- reg
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additionalProperties: true
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required:
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- "#address-cells"
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- "#size-cells"
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additionalProperties: true
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examples:
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- |
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#include <dt-bindings/clock/qcom,gcc-msm8960.h>
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#include <dt-bindings/clock/qcom,lcc-msm8960.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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soc {
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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slim@28080000 {
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compatible = "qcom,apq8064-slim", "qcom,slim";
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reg = <0x28080000 0x2000>, <0x80207c 4>;
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reg-names = "ctrl", "slew";
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interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&lcc SLIMBUS_SRC>, <&lcc AUDIO_SLIMBUS_CLK>;
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clock-names = "iface", "core";
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#address-cells = <2>;
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#size-cells = <0>;
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audio-codec@1,0 {
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compatible = "slim217,60";
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reg = <1 0>;
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};
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};
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};
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