From: Daniel Baluta <daniel.baluta@xxxxxxx> 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> --- .../bindings/arm/freescale/fsl,dsp.yaml | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/freescale/fsl,dsp.yaml diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,dsp.yaml b/Documentation/devicetree/bindings/arm/freescale/fsl,dsp.yaml new file mode 100644 index 000000000000..16d9df1d397b --- /dev/null +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,dsp.yaml @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/freescale/fsl,dsp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP i.MX IPC DSP driver + +maintainers: + - Daniel Baluta <daniel.baluta@xxxxxxx> + +description: | + IPC communication layer between Host CPU and DSP on NXP i.MX8 platforms + +properties: + compatible: + enum: + - fsl,imx-dsp + + mboxes: + description: + List of phandle of 2 MU channels for TXDB, 2 MU channels for RXDB + (see mailbox/fsl,mu.txt) + maxItems: 1 + + mbox-names + description: + Mailboxes names + allOf: + - $ref: "/schemas/types.yaml#/definitions/string" + - enum: [ "txdb0", "txdb1", "rxdb0", "rxdb1" ] +required: + - compatible + - mboxes + - mbox-names + +examples: + - | + dsp { + compatbile = "fsl,imx-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
