fsl,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/fsl,dsp.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: NXP i.MX8 DSP core
    8 
    9 maintainers:
   10   - Daniel Baluta <daniel.baluta@nxp.com>
   11   - Shengjiu Wang <shengjiu.wang@nxp.com>
   12 
   13 description: |
   14   Some boards from i.MX8 family contain a DSP core used for
   15   advanced pre- and post- audio processing.
   16 
   17 properties:
   18   compatible:
   19     enum:
   20       - fsl,imx8qxp-dsp
   21       - fsl,imx8qm-dsp
   22       - fsl,imx8mp-dsp
   23       - fsl,imx8qxp-hifi4
   24       - fsl,imx8qm-hifi4
   25       - fsl,imx8mp-hifi4
   26       - fsl,imx8ulp-hifi4
   27 
   28   reg:
   29     maxItems: 1
   30 
   31   clocks:
   32     items:
   33       - description: ipg clock
   34       - description: ocram clock
   35       - description: core clock
   36       - description: debug interface clock
   37       - description: message unit clock
   38     minItems: 3
   39 
   40   clock-names:
   41     items:
   42       - const: ipg
   43       - const: ocram
   44       - const: core
   45       - const: debug
   46       - const: mu
   47     minItems: 3
   48 
   49   power-domains:
   50     description:
   51       List of phandle and PM domain specifier as documented in
   52       Documentation/devicetree/bindings/power/power_domain.txt
   53     minItems: 1
   54     maxItems: 4
   55 
   56   mboxes:
   57     description:
   58       List of <&phandle type channel> - 2 channels for TXDB, 2 channels for RXDB
   59       or - 1 channel for TX, 1 channel for RX, 1 channel for RXDB
   60       (see mailbox/fsl,mu.txt)
   61     minItems: 3
   62     maxItems: 4
   63 
   64   mbox-names:
   65     minItems: 3
   66     maxItems: 4
   67 
   68   memory-region:
   69     description:
   70       phandle to a node describing reserved memory (System RAM memory)
   71       used by DSP (see bindings/reserved-memory/reserved-memory.txt)
   72     minItems: 1
   73     maxItems: 4
   74 
   75   firmware-name:
   76     description: |
   77       Default name of the firmware to load to the remote processor.
   78 
   79   fsl,dsp-ctrl:
   80     $ref: /schemas/types.yaml#/definitions/phandle
   81     description:
   82       Phandle to syscon block which provide access for processor enablement
   83 
   84 required:
   85   - compatible
   86   - reg
   87   - clocks
   88   - clock-names
   89   - power-domains
   90   - mboxes
   91   - mbox-names
   92   - memory-region
   93 
   94 allOf:
   95   - if:
   96       properties:
   97         compatible:
   98           contains:
   99             enum:
  100               - fsl,imx8qxp-dsp
  101               - fsl,imx8qm-dsp
  102               - fsl,imx8qxp-hifi4
  103               - fsl,imx8qm-hifi4
  104     then:
  105       properties:
  106         power-domains:
  107           minItems: 4
  108     else:
  109       properties:
  110         power-domains:
  111           maxItems: 1
  112 
  113   - if:
  114       properties:
  115         compatible:
  116           contains:
  117             enum:
  118               - fsl,imx8qxp-hifi4
  119               - fsl,imx8qm-hifi4
  120               - fsl,imx8mp-hifi4
  121               - fsl,imx8ulp-hifi4
  122     then:
  123       properties:
  124         memory-region:
  125           minItems: 4
  126         mboxes:
  127           maxItems: 3
  128         mbox-names:
  129           items:
  130             - const: tx
  131             - const: rx
  132             - const: rxdb
  133     else:
  134       properties:
  135         memory-region:
  136           maxItems: 1
  137         mboxes:
  138           minItems: 4
  139         mbox-names:
  140           items:
  141             - const: txdb0
  142             - const: txdb1
  143             - const: rxdb0
  144             - const: rxdb1
  145 
  146 additionalProperties: false
  147 
  148 examples:
  149   - |
  150     #include <dt-bindings/firmware/imx/rsrc.h>
  151     #include <dt-bindings/clock/imx8-clock.h>
  152     dsp@596e8000 {
  153         compatible = "fsl,imx8qxp-dsp";
  154         reg = <0x596e8000 0x88000>;
  155         clocks = <&adma_lpcg IMX_ADMA_LPCG_DSP_IPG_CLK>,
  156                  <&adma_lpcg IMX_ADMA_LPCG_OCRAM_IPG_CLK>,
  157                  <&adma_lpcg IMX_ADMA_LPCG_DSP_CORE_CLK>;
  158         clock-names = "ipg", "ocram", "core";
  159         power-domains = <&pd IMX_SC_R_MU_13A>,
  160                         <&pd IMX_SC_R_MU_13B>,
  161                         <&pd IMX_SC_R_DSP>,
  162                         <&pd IMX_SC_R_DSP_RAM>;
  163         mbox-names = "txdb0", "txdb1", "rxdb0", "rxdb1";
  164         mboxes = <&lsio_mu13 2 0>, <&lsio_mu13 2 1>, <&lsio_mu13 3 0>, <&lsio_mu13 3 1>;
  165         memory-region = <&dsp_reserved>;
  166     };
  167   - |
  168     #include <dt-bindings/clock/imx8mp-clock.h>
  169     dsp_reserved: dsp@92400000 {
  170       reg = <0x92400000 0x1000000>;
  171       no-map;
  172     };
  173     dsp_vdev0vring0: vdev0vring0@942f0000 {
  174       reg = <0x942f0000 0x8000>;
  175       no-map;
  176     };
  177     dsp_vdev0vring1: vdev0vring1@942f8000 {
  178       reg = <0x942f8000 0x8000>;
  179       no-map;
  180     };
  181     dsp_vdev0buffer: vdev0buffer@94300000 {
  182       compatible = "shared-dma-pool";
  183       reg = <0x94300000 0x100000>;
  184       no-map;
  185     };
  186 
  187     dsp: dsp@3b6e8000 {
  188       compatible = "fsl,imx8mp-hifi4";
  189       reg = <0x3b6e8000 0x88000>;
  190       clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_DSP_ROOT>,
  191                <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_OCRAMA_IPG>,
  192                <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_DSP_ROOT>,
  193                <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_DSPDBG_ROOT>;
  194       clock-names = "ipg", "ocram", "core", "debug";
  195       firmware-name = "imx/dsp/hifi4.bin";
  196       power-domains = <&audiomix_pd>;
  197       mbox-names = "tx", "rx", "rxdb";
  198       mboxes = <&mu2 0 0>,
  199                <&mu2 1 0>,
  200                <&mu2 3 0>;
  201       memory-region = <&dsp_vdev0buffer>, <&dsp_vdev0vring0>,
  202                       <&dsp_vdev0vring1>, <&dsp_reserved>;
  203       fsl,dsp-ctrl = <&audio_blk_ctrl>;
  204     };

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