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Subject[PATCH 2/2] dt-bindings: arm: fsl: Add DSP IPC binding support
Date
From: Daniel Baluta <daniel.baluta@nxp.com>

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>
---
.../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@nxp.com>
+
+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
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