mediatek,mt8195-dsp.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/dsp/mediatek,mt8195-dsp.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Mediatek mt8195 DSP core
    8 
    9 maintainers:
   10   - YC Hung <yc.hung@mediatek.com>
   11 
   12 description: |
   13   Some boards from mt8195 contain a DSP core used for
   14   advanced pre- and post- audio processing.
   15 
   16 properties:
   17   compatible:
   18     const: mediatek,mt8195-dsp
   19 
   20   reg:
   21     items:
   22       - description: Address and size of the DSP Cfg registers
   23       - description: Address and size of the DSP SRAM
   24 
   25   reg-names:
   26     items:
   27       - const: cfg
   28       - const: sram
   29 
   30   clocks:
   31     items:
   32       - description: mux for audio dsp clock
   33       - description: 26M clock
   34       - description: mux for audio dsp local bus
   35       - description: default audio dsp local bus clock source
   36       - description: clock gate for audio dsp clock
   37       - description: mux for audio dsp access external bus
   38 
   39   clock-names:
   40     items:
   41       - const: adsp_sel
   42       - const: clk26m_ck
   43       - const: audio_local_bus
   44       - const: mainpll_d7_d2
   45       - const: scp_adsp_audiodsp
   46       - const: audio_h
   47 
   48   power-domains:
   49     maxItems: 1
   50 
   51   mboxes:
   52     items:
   53       - description: mailbox for receiving audio DSP requests.
   54       - description: mailbox for transmitting requests to audio DSP.
   55 
   56   mbox-names:
   57     items:
   58       - const: rx
   59       - const: tx
   60 
   61   memory-region:
   62     items:
   63       - description: dma buffer between host and DSP.
   64       - description: DSP system memory.
   65 
   66 required:
   67   - compatible
   68   - reg
   69   - reg-names
   70   - clocks
   71   - clock-names
   72   - memory-region
   73   - power-domains
   74   - mbox-names
   75   - mboxes
   76 
   77 additionalProperties: false
   78 
   79 examples:
   80   - |
   81     #include <dt-bindings/interrupt-controller/arm-gic.h>
   82     #include <dt-bindings/interrupt-controller/irq.h>
   83     dsp@10803000 {
   84        compatible =  "mediatek,mt8195-dsp";
   85        reg = <0x10803000  0x1000>,
   86              <0x10840000  0x40000>;
   87        reg-names = "cfg", "sram";
   88        clocks = <&topckgen 10>, //CLK_TOP_ADSP
   89                 <&clk26m>,
   90                 <&topckgen 107>, //CLK_TOP_AUDIO_LOCAL_BUS
   91                 <&topckgen 136>, //CLK_TOP_MAINPLL_D7_D2
   92                 <&scp_adsp 0>, //CLK_SCP_ADSP_AUDIODSP
   93                 <&topckgen 34>; //CLK_TOP_AUDIO_H
   94        clock-names = "adsp_sel",
   95                      "clk26m_ck",
   96                      "audio_local_bus",
   97                      "mainpll_d7_d2",
   98                      "scp_adsp_audiodsp",
   99                      "audio_h";
  100        memory-region = <&adsp_dma_mem_reserved>,
  101                        <&adsp_mem_reserved>;
  102        power-domains = <&spm 6>; //MT8195_POWER_DOMAIN_ADSP
  103        mbox-names = "rx", "tx";
  104        mboxes = <&adsp_mailbox0>, <&adsp_mailbox1>;
  105     };

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