# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/qcom,lpass-cpu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm Technologies Inc. LPASS CPU dai driver bindings
maintainers:
- Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
- Rohit kumar <rohitkr@codeaurora.org>
description: |
Qualcomm Technologies Inc. SOC Low-Power Audio SubSystem (LPASS) that consist
of MI2S interface for audio data transfer on external codecs. LPASS cpu driver
is a module to configure Low-Power Audio Interface(LPAIF) core registers
across different IP versions.
properties:
compatible:
enum:
- qcom,lpass-cpu
- qcom,apq8016-lpass-cpu
- qcom,sc7180-lpass-cpu
reg:
maxItems: 2
description: LPAIF core registers
reg-names:
maxItems: 2
clocks:
minItems: 3
maxItems: 6
clock-names:
minItems: 3
maxItems: 6
interrupts:
maxItems: 2
description: LPAIF DMA buffer interrupt
interrupt-names:
maxItems: 2
qcom,adsp:
$ref: /schemas/types.yaml#/definitions/phandle
description: Phandle for the audio DSP node
iommus:
maxItems: 2
description: Phandle to apps_smmu node with sid mask
power-domains:
maxItems: 1
'#sound-dai-cells':
const: 1
'#address-cells':
const: 1
'#size-cells':
const: 0
patternProperties:
"^dai-link@[0-9a-f]$":
type: object
description: |
LPASS CPU dai node for each I2S device. Bindings of each node
depends on the specific driver providing the functionality and
properties.
properties:
reg:
maxItems: 1
description: Must be one of the DAI ID
qcom,playback-sd-lines:
$ref: /schemas/types.yaml#/definitions/uint32-array
description: list of MI2S data lines for playback
qcom,capture-sd-lines:
$ref: /schemas/types.yaml#/definitions/uint32-array
description: list of MI2S data lines for capture
required:
- reg
additionalProperties: false
required:
- compatible
- reg
- reg-names
- clocks
- clock-names
- interrupts
- interrupt-names
- '#sound-dai-cells'
additionalProperties: false
allOf:
- if:
properties:
compatible:
contains:
const: qcom,lpass-cpu
then:
properties:
clock-names:
items:
- const: ahbix-clk
- const: mi2s-osr-clk
- const: mi2s-bit-clk
- if:
properties:
compatible:
contains:
const: qcom,apq8016-lpass-cpu
then:
properties:
clock-names:
items:
- const: ahbix-clk
- const: mi2s-bit-clk0
- const: mi2s-bit-clk1
- const: mi2s-bit-clk2
- const: mi2s-bit-clk3
- const: pcnoc-mport-clk
- const: pcnoc-sway-clk
- if:
properties:
compatible:
contains:
const: qcom,sc7180-lpass-cpu
then:
properties:
clock-names:
oneOf:
- items: #for I2S
- const: pcnoc-sway-clk
- const: audio-core
- const: mclk0
- const: pcnoc-mport-clk
- const: mi2s-bit-clk0
- const: mi2s-bit-clk1
- items: #for HDMI
- const: pcnoc-sway-clk
- const: audio-core
- const: pcnoc-mport-clk
reg-names:
anyOf:
- items: #for I2S
- const: lpass-lpaif
- items: #for I2S and HDMI
- const: lpass-hdmiif
- const: lpass-lpaif
interrupt-names:
anyOf:
- items: #for I2S
- const: lpass-irq-lpaif
- items: #for I2S and HDMI
- const: lpass-irq-lpaif
- const: lpass-irq-hdmi
required:
- iommus
- power-domains
examples:
- |
#include <dt-bindings/sound/sc7180-lpass.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
lpass@62d80000 {
compatible = "qcom,sc7180-lpass-cpu";
reg = <0 0x62d87000 0 0x68000>,
<0 0x62f00000 0 0x29000>;
reg-names = "lpass-hdmiif",
"lpass-lpaif";
iommus = <&apps_smmu 0x1020 0>,
<&apps_smmu 0x1032 0>;
power-domains = <&lpass_hm 0>;
clocks = <&gcc 131>,
<&lpasscorecc 6>,
<&lpasscorecc 7>,
<&lpasscorecc 10>,
<&lpasscorecc 8>,
<&lpasscorecc 9>;
clock-names = "pcnoc-sway-clk", "audio-core",
"mclk0", "pcnoc-mport-clk",
"mi2s-bit-clk0", "mi2s-bit-clk1";
interrupts = <0 160 1>,
<0 268 1>;
interrupt-names = "lpass-irq-lpaif",
"lpass-irq-hdmi";
#sound-dai-cells = <1>;
#address-cells = <1>;
#size-cells = <0>;
/* Optional to set different MI2S SD lines */
dai-link@0 {
reg = <MI2S_PRIMARY>;
qcom,playback-sd-lines = <1>;
qcom,capture-sd-lines = <0>;
};
};
};
...
