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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/dsp/mediatek,mt8195-dsp.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/dsp/mediatek,mt8195-dsp.yaml#

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$schema: http://devicetree.org/meta-schemas/core.yaml#

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title: Mediatek mt8195 DSP core

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maintainers:

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  - YC Hung <yc.hung@mediatek.com>

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description: |

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  Some boards from mt8195 contain a DSP core used for

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  advanced pre- and post- audio processing.

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properties:

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  compatible:

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    const: mediatek,mt8195-dsp

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  reg:

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    items:

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      - description: Address and size of the DSP Cfg registers

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      - description: Address and size of the DSP SRAM

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  reg-names:

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    items:

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      - const: cfg

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      - const: sram

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  clocks:

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    items:

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      - description: mux for audio dsp clock

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      - description: 26M clock

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      - description: mux for audio dsp local bus

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      - description: default audio dsp local bus clock source

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      - description: clock gate for audio dsp clock

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      - description: mux for audio dsp access external bus

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  clock-names:

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    items:

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      - const: adsp_sel

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      - const: clk26m_ck

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      - const: audio_local_bus

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      - const: mainpll_d7_d2

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      - const: scp_adsp_audiodsp

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      - const: audio_h

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  power-domains:

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    maxItems: 1

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  mboxes:

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    items:

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      - description: mailbox for receiving audio DSP requests.

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      - description: mailbox for transmitting requests to audio DSP.

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  mbox-names:

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    items:

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      - const: rx

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      - const: tx

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  memory-region:

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    items:

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      - description: dma buffer between host and DSP.

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      - description: DSP system memory.

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required:

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  - compatible

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  - reg

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  - reg-names

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  - clocks

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  - clock-names

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  - memory-region

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  - power-domains

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  - mbox-names

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  - mboxes

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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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    dsp@10803000 {

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        compatible =  "mediatek,mt8195-dsp";

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        reg = <0x10803000 0x1000>,

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              <0x10840000 0x40000>;

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        reg-names = "cfg", "sram";

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        clocks = <&topckgen 10>, //CLK_TOP_ADSP

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                 <&clk26m>,

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                 <&topckgen 107>, //CLK_TOP_AUDIO_LOCAL_BUS

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                 <&topckgen 136>, //CLK_TOP_MAINPLL_D7_D2

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                 <&scp_adsp 0>, //CLK_SCP_ADSP_AUDIODSP

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                 <&topckgen 34>; //CLK_TOP_AUDIO_H

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        clock-names = "adsp_sel",

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                      "clk26m_ck",

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                      "audio_local_bus",

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                      "mainpll_d7_d2",

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                      "scp_adsp_audiodsp",

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                      "audio_h";

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        memory-region = <&adsp_dma_mem_reserved>,

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                        <&adsp_mem_reserved>;

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        power-domains = <&spm 6>; //MT8195_POWER_DOMAIN_ADSP

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        mbox-names = "rx", "tx";

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        mboxes = <&adsp_mailbox0>, <&adsp_mailbox1>;

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    };

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