[PATCH v2 2/2] dt-bindings: dsp: fsl: Add DSP IPC binding support
From: Daniel Baluta <daniel.baluta@nxp.com>
Date: 2019-06-27 08:12:36
Also in:
linux-devicetree, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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@nxp.com> --- .../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@nxp.com> + +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
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