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    Subject[PATCH v4 06/28] dt-bindings: net: Add support for QMC HDLC
    Date
    From: Herve Codina <herve.codina@bootlin.com>

    The QMC (QUICC mutichannel controller) is a controller present in some
    PowerQUICC SoC such as MPC885.
    The QMC HDLC uses the QMC controller to transfer HDLC data.

    Additionally, a framer can be connected to the QMC HDLC.
    If present, this framer is the interface between the TDM bus used by the
    QMC HDLC and the E1/T1 line.
    The QMC HDLC can use this framer to get information about the E1/T1 line
    and configure the E1/T1 line.

    Signed-off-by: Herve Codina <herve.codina@bootlin.com>
    Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
    ---
    .../devicetree/bindings/net/fsl,qmc-hdlc.yaml | 46 +++++++++++++++++++
    1 file changed, 46 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/net/fsl,qmc-hdlc.yaml

    diff --git a/Documentation/devicetree/bindings/net/fsl,qmc-hdlc.yaml b/Documentation/devicetree/bindings/net/fsl,qmc-hdlc.yaml
    new file mode 100644
    index 000000000000..13f3572f0feb
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/net/fsl,qmc-hdlc.yaml
    @@ -0,0 +1,46 @@
    +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/net/fsl,qmc-hdlc.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Freescale/NXP QUICC Multichannel Controller (QMC) HDLC
    +
    +maintainers:
    + - Herve Codina <herve.codina@bootlin.com>
    +
    +description: |
    + The QMC HDLC uses a QMC (QUICC Multichannel Controller) channel to transfer
    + HDLC data.
    +
    +properties:
    + compatible:
    + const: fsl,qmc-hdlc
    +
    + fsl,qmc-chan:
    + $ref: /schemas/types.yaml#/definitions/phandle-array
    + items:
    + - items:
    + - description: phandle to QMC node
    + - description: Channel number
    + description:
    + Should be a phandle/number pair. The phandle to QMC node and the QMC
    + channel to use.
    +
    + framer:
    + $ref: /schemas/types.yaml#/definitions/phandle
    + description:
    + phandle to the framer node
    +
    +required:
    + - compatible
    + - fsl,qmc-chan
    +
    +additionalProperties: false
    +
    +examples:
    + - |
    + hdlc {
    + compatible = "fsl,qmc-hdlc";
    + fsl,qmc-chan = <&qmc 16>;
    + };
    --
    2.41.0
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