| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/dsp/fsl,dsp.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: NXP i.MX8 DSP core |
| |
| maintainers: |
| - Daniel Baluta <daniel.baluta@nxp.com> |
| |
| description: | |
| Some boards from i.MX8 family contain a DSP core used for |
| advanced pre- and post- audio processing. |
| |
| properties: |
| compatible: |
| enum: |
| - fsl,imx8qxp-dsp |
| - fsl,imx8qm-dsp |
| - fsl,imx8mp-dsp |
| |
| reg: |
| maxItems: 1 |
| |
| clocks: |
| items: |
| - description: ipg clock |
| - description: ocram clock |
| - description: core clock |
| |
| clock-names: |
| items: |
| - const: ipg |
| - const: ocram |
| - const: core |
| |
| power-domains: |
| description: |
| List of phandle and PM domain specifier as documented in |
| Documentation/devicetree/bindings/power/power_domain.txt |
| maxItems: 4 |
| |
| mboxes: |
| description: |
| List of <&phandle type channel> - 2 channels for TXDB, 2 channels for RXDB |
| (see mailbox/fsl,mu.txt) |
| maxItems: 4 |
| |
| mbox-names: |
| items: |
| - const: txdb0 |
| - const: txdb1 |
| - const: rxdb0 |
| - const: rxdb1 |
| |
| memory-region: |
| description: |
| phandle to a node describing reserved memory (System RAM memory) |
| used by DSP (see bindings/reserved-memory/reserved-memory.txt) |
| maxItems: 1 |
| |
| required: |
| - compatible |
| - reg |
| - clocks |
| - clock-names |
| - power-domains |
| - mboxes |
| - mbox-names |
| - memory-region |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/firmware/imx/rsrc.h> |
| #include <dt-bindings/clock/imx8-clock.h> |
| dsp@596e8000 { |
| compatible = "fsl,imx8qxp-dsp"; |
| reg = <0x596e8000 0x88000>; |
| clocks = <&adma_lpcg IMX_ADMA_LPCG_DSP_IPG_CLK>, |
| <&adma_lpcg IMX_ADMA_LPCG_OCRAM_IPG_CLK>, |
| <&adma_lpcg IMX_ADMA_LPCG_DSP_CORE_CLK>; |
| clock-names = "ipg", "ocram", "core"; |
| power-domains = <&pd IMX_SC_R_MU_13A>, |
| <&pd IMX_SC_R_MU_13B>, |
| <&pd IMX_SC_R_DSP>, |
| <&pd IMX_SC_R_DSP_RAM>; |
| mbox-names = "txdb0", "txdb1", "rxdb0", "rxdb1"; |
| mboxes = <&lsio_mu13 2 0>, <&lsio_mu13 2 1>, <&lsio_mu13 3 0>, <&lsio_mu13 3 1>; |
| memory-region = <&dsp_reserved>; |
| }; |
