xref: /linux/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml (revision 9fd2da71c301184d98fe37674ca8d017d1ce6600) 
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
7title: NXP i.MX8 DSP core
8
9maintainers:
10  - Daniel Baluta <daniel.baluta@nxp.com>
11  - Shengjiu Wang <shengjiu.wang@nxp.com>
12
13description: |
14  Some boards from i.MX8 family contain a DSP core used for
15  advanced pre- and post- audio processing.
16
17properties:
18  compatible:
19    enum:
20      - fsl,imx8qxp-dsp
21      - fsl,imx8qm-dsp
22      - fsl,imx8mp-dsp
23      - fsl,imx8ulp-dsp
24      - fsl,imx8qxp-hifi4
25      - fsl,imx8qm-hifi4
26      - fsl,imx8mp-hifi4
27      - fsl,imx8ulp-hifi4
28
29  reg:
30    maxItems: 1
31
32  clocks:
33    items:
34      - description: ipg clock
35      - description: ocram clock
36      - description: core clock
37      - description: debug interface clock
38      - description: message unit clock
39    minItems: 3
40
41  clock-names:
42    items:
43      - const: ipg
44      - const: ocram
45      - const: core
46      - const: debug
47      - const: mu
48    minItems: 3
49
50  power-domains:
51    description:
52      List of phandle and PM domain specifier as documented in
53      Documentation/devicetree/bindings/power/power_domain.txt
54    minItems: 1
55    maxItems: 4
56
57  mboxes:
58    description:
59      List of <&phandle type channel> - 2 channels for TXDB, 2 channels for RXDB
60      or - 1 channel for TX, 1 channel for RX, 1 channel for RXDB
61      (see mailbox/fsl,mu.txt)
62    minItems: 3
63    maxItems: 4
64
65  mbox-names:
66    minItems: 3
67    maxItems: 4
68
69  memory-region:
70    description:
71      phandle to a node describing reserved memory (System RAM memory)
72      used by DSP (see bindings/reserved-memory/reserved-memory.txt)
73    minItems: 1
74    maxItems: 4
75
76  firmware-name:
77    description: |
78      Default name of the firmware to load to the remote processor.
79
80  fsl,dsp-ctrl:
81    $ref: /schemas/types.yaml#/definitions/phandle
82    description:
83      Phandle to syscon block which provide access for processor enablement
84
85  resets:
86    minItems: 1
87
88  reset-names:
89    minItems: 1
90    items:
91      - const: runstall
92      - const: softreset
93
94  access-controllers:
95    maxItems: 1
96
97required:
98  - compatible
99  - reg
100  - clocks
101  - clock-names
102  - power-domains
103  - mboxes
104  - mbox-names
105  - memory-region
106
107allOf:
108  - if:
109      properties:
110        compatible:
111          contains:
112            enum:
113              - fsl,imx8qxp-dsp
114              - fsl,imx8qxp-hifi4
115    then:
116      properties:
117        power-domains:
118          minItems: 2
119          maxItems: 2
120
121  - if:
122      properties:
123        compatible:
124          contains:
125            enum:
126              - fsl,imx8qm-dsp
127              - fsl,imx8qm-hifi4
128    then:
129      properties:
130        power-domains:
131          minItems: 4
132
133  - if:
134      properties:
135        compatible:
136          contains:
137            enum:
138              - fsl,imx8mp-dsp
139              - fsl,imx8mp-hifi4
140              - fsl,imx8ulp-dsp
141              - fsl,imx8ulp-hifi4
142    then:
143      properties:
144        power-domains:
145          maxItems: 1
146
147  - if:
148      properties:
149        compatible:
150          contains:
151            enum:
152              - fsl,imx8qxp-hifi4
153              - fsl,imx8qm-hifi4
154              - fsl,imx8mp-hifi4
155              - fsl,imx8ulp-hifi4
156    then:
157      properties:
158        memory-region:
159          minItems: 4
160        mboxes:
161          maxItems: 3
162        mbox-names:
163          items:
164            - const: tx
165            - const: rx
166            - const: rxdb
167    else:
168      properties:
169        memory-region:
170          maxItems: 1
171        mboxes:
172          minItems: 4
173        mbox-names:
174          items:
175            - const: txdb0
176            - const: txdb1
177            - const: rxdb0
178            - const: rxdb1
179  - if:
180      properties:
181        compatible:
182          contains:
183            enum:
184              - fsl,imx8mp-dsp
185              - fsl,imx8mp-hifi4
186    then:
187      required:
188        - resets
189        - reset-names
190
191additionalProperties: false
192
193examples:
194  - |
195    #include <dt-bindings/firmware/imx/rsrc.h>
196    #include <dt-bindings/clock/imx8-clock.h>
197    dsp@596e8000 {
198        compatible = "fsl,imx8qxp-dsp";
199        reg = <0x596e8000 0x88000>;
200        clocks = <&adma_lpcg IMX_ADMA_LPCG_DSP_IPG_CLK>,
201                 <&adma_lpcg IMX_ADMA_LPCG_OCRAM_IPG_CLK>,
202                 <&adma_lpcg IMX_ADMA_LPCG_DSP_CORE_CLK>;
203        clock-names = "ipg", "ocram", "core";
204        power-domains = <&pd IMX_SC_R_MU_13B>,
205                        <&pd IMX_SC_R_MU_2A>;
206        mbox-names = "txdb0", "txdb1", "rxdb0", "rxdb1";
207        mboxes = <&lsio_mu13 2 0>, <&lsio_mu13 2 1>, <&lsio_mu13 3 0>, <&lsio_mu13 3 1>;
208        memory-region = <&dsp_reserved>;
209    };
210  - |
211    #include <dt-bindings/clock/imx8mp-clock.h>
212    #include <dt-bindings/reset/imx8mp-reset-audiomix.h>
213    dsp_reserved: dsp@92400000 {
214      reg = <0x92400000 0x1000000>;
215      no-map;
216    };
217    dsp_vdev0vring0: vdev0vring0@942f0000 {
218      reg = <0x942f0000 0x8000>;
219      no-map;
220    };
221    dsp_vdev0vring1: vdev0vring1@942f8000 {
222      reg = <0x942f8000 0x8000>;
223      no-map;
224    };
225    dsp_vdev0buffer: vdev0buffer@94300000 {
226      compatible = "shared-dma-pool";
227      reg = <0x94300000 0x100000>;
228      no-map;
229    };
230
231    dsp: dsp@3b6e8000 {
232      compatible = "fsl,imx8mp-hifi4";
233      reg = <0x3b6e8000 0x88000>;
234      clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_DSP_ROOT>,
235               <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_OCRAMA_IPG>,
236               <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_DSP_ROOT>,
237               <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_DSPDBG_ROOT>;
238      clock-names = "ipg", "ocram", "core", "debug";
239      firmware-name = "imx/dsp/hifi4.bin";
240      power-domains = <&audiomix_pd>;
241      mbox-names = "tx", "rx", "rxdb";
242      mboxes = <&mu2 0 0>,
243               <&mu2 1 0>,
244               <&mu2 3 0>;
245      memory-region = <&dsp_vdev0buffer>, <&dsp_vdev0vring0>,
246                      <&dsp_vdev0vring1>, <&dsp_reserved>;
247      resets = <&audio_blk_ctrl IMX8MP_AUDIOMIX_DSP_RUNSTALL>;
248      reset-names = "runstall";
249    };
250