DSP IPC is the layer that allows the Host CPU to communicate with DSP firmware. DSP is part of some i.MX8 boards (e.g i.MX8QM, i.MX8QXP) Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxx> --- .../devicetree/bindings/dsp/fsl,dsp_ipc.yaml | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/devicetree/bindings/dsp/fsl,dsp_ipc.yaml diff --git a/Documentation/devicetree/bindings/dsp/fsl,dsp_ipc.yaml b/Documentation/devicetree/bindings/dsp/fsl,dsp_ipc.yaml new file mode 100644 index 000000000000..1cbf5d25b258 --- /dev/null +++ b/Documentation/devicetree/bindings/dsp/fsl,dsp_ipc.yaml @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/freescale/fsl,dsp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP i.MX8 IPC DSP interface + +maintainers: + - Daniel Baluta <daniel.baluta@xxxxxxx> + +description: | + IPC communication layer between Host CPU and DSP on NXP i.MX8 platforms + +properties: + compatible: + enum: + - fsl,imx8qxp-dsp + + 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 + +required: + - compatible + - mboxes + - mbox-names + +examples: + - | + dsp_ipc { + compatbile = "fsl,imx8qxp-dsp"; + mbox-names = "txdb0", "txdb1", "rxdb0", "rxdb1"; + mboxes = <&lsio_mu13 2 0>, <&lsio_mu13 2 1>, <&lsio_mu13 3 0>, <&lsio_mu13 3 1>; + }; -- 2.17.1
