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# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/slimbus/slimbus.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: SLIM (Serial Low Power Interchip Media) bus
maintainers:
- Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
description:
SLIMbus is a 2-wire bus, and is used to communicate with peripheral
components like audio-codec.
properties:
$nodename:
pattern: "^slim(@.*|-[0-9a-f])*$"
"#address-cells":
const: 2
"#size-cells":
const: 0
patternProperties:
"^.*@[0-9a-f]+,[0-9a-f]+$":
type: object
description: |
Every SLIMbus controller node can contain zero or more child nodes
representing slave devices on the bus. Every SLIMbus slave device is
uniquely determined by the enumeration address containing 4 fields::
Manufacturer ID, Product code, Device index, and Instance value for the
device.
If child node is not present and it is instantiated after device
discovery (slave device reporting itself present).
In some cases it may be necessary to describe non-probeable device
details such as non-standard ways of powering up a device. In such cases,
child nodes for those devices will be present as slaves of the SLIMbus
controller.
properties:
compatible:
pattern: "^slim[0-9a-f]+,[0-9a-f]+$"
reg:
maxItems: 1
description: |
Pair of (device index, instande ID), where::
- Device index, which uniquely identifies multiple devices within a
single component.
- Instance ID, can be used for the cases where multiple devices of
the same type or class are attached to the bus.
required:
- compatible
- reg
additionalProperties: true
required:
- "#address-cells"
- "#size-cells"
additionalProperties: true
examples:
- |
#include <dt-bindings/clock/qcom,gcc-msm8960.h>
#include <dt-bindings/clock/qcom,lcc-msm8960.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
soc {
#address-cells = <1>;
#size-cells = <1>;
ranges;
slim@28080000 {
compatible = "qcom,apq8064-slim", "qcom,slim";
reg = <0x28080000 0x2000>, <0x80207c 4>;
reg-names = "ctrl", "slew";
interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&lcc SLIMBUS_SRC>, <&lcc AUDIO_SLIMBUS_CLK>;
clock-names = "iface", "core";
#address-cells = <2>;
#size-cells = <0>;
audio-codec@1,0 {
compatible = "slim217,60";
reg = <1 0>;
};
};
};
|
