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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dsp/mediatek,mt8195-dsp.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Mediatek mt8195 DSP core
maintainers:
- YC Hung <yc.hung@mediatek.com>
description: |
Some boards from mt8195 contain a DSP core used for
advanced pre- and post- audio processing.
properties:
compatible:
const: mediatek,mt8195-dsp
reg:
items:
- description: Address and size of the DSP Cfg registers
- description: Address and size of the DSP SRAM
reg-names:
items:
- const: cfg
- const: sram
clocks:
items:
- description: mux for audio dsp clock
- description: 26M clock
- description: mux for audio dsp local bus
- description: default audio dsp local bus clock source
- description: clock gate for audio dsp clock
- description: mux for audio dsp access external bus
clock-names:
items:
- const: adsp_sel
- const: clk26m_ck
- const: audio_local_bus
- const: mainpll_d7_d2
- const: scp_adsp_audiodsp
- const: audio_h
power-domains:
maxItems: 1
mboxes:
items:
- description: mailbox for receiving audio DSP requests.
- description: mailbox for transmitting requests to audio DSP.
mbox-names:
items:
- const: rx
- const: tx
memory-region:
items:
- description: dma buffer between host and DSP.
- description: DSP system memory.
required:
- compatible
- reg
- reg-names
- clocks
- clock-names
- memory-region
- power-domains
- mbox-names
- mboxes
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
dsp@10803000 {
compatible = "mediatek,mt8195-dsp";
reg = <0x10803000 0x1000>,
<0x10840000 0x40000>;
reg-names = "cfg", "sram";
clocks = <&topckgen 10>, //CLK_TOP_ADSP
<&clk26m>,
<&topckgen 107>, //CLK_TOP_AUDIO_LOCAL_BUS
<&topckgen 136>, //CLK_TOP_MAINPLL_D7_D2
<&scp_adsp 0>, //CLK_SCP_ADSP_AUDIODSP
<&topckgen 34>; //CLK_TOP_AUDIO_H
clock-names = "adsp_sel",
"clk26m_ck",
"audio_local_bus",
"mainpll_d7_d2",
"scp_adsp_audiodsp",
"audio_h";
memory-region = <&adsp_dma_mem_reserved>,
<&adsp_mem_reserved>;
power-domains = <&spm 6>; //MT8195_POWER_DOMAIN_ADSP
mbox-names = "rx", "tx";
mboxes = <&adsp_mailbox0>, <&adsp_mailbox1>;
};
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