Commit fe612629 authored by Herve Codina's avatar Herve Codina Committed by Rob Herring
Browse files

dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Add support for QMC HDLC 



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: default avatarHerve Codina <herve.codina@bootlin.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231011061437.64213-9-herve.codina@bootlin.com


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 527de94b

Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml

+30 −0
Original line number Diff line number Diff line
@@ -101,6 +101,32 @@ patternProperties: 
          Channel assigned Rx time-slots within the Rx time-slots routed by the

          TSA to this cell.



      compatible:

        items:

          - enum:

              - fsl,mpc885-scc-qmc-hdlc

              - fsl,mpc866-scc-qmc-hdlc

          - const: fsl,cpm1-scc-qmc-hdlc

          - const: fsl,qmc-hdlc



      fsl,framer:

        $ref: /schemas/types.yaml#/definitions/phandle

        description:

          phandle to the framer node. The framer is in charge of an E1/T1 line

          interface connected to the TDM bus. It can be used to get the E1/T1 line

          status such as link up/down.



    allOf:

      - if:

          properties:

            compatible:

              not:

                contains:

                  const: fsl,qmc-hdlc

        then:

          properties:

            fsl,framer: false



    required:

      - reg

      - fsl,tx-ts-mask
@@ -155,9 +181,13 @@ examples: 


        channel@19 {

            /* Ch19 : 8 TS (TS 8..15) from all routed from TSA */

            compatible = "fsl,mpc885-scc-qmc-hdlc",

                         "fsl,cpm1-scc-qmc-hdlc",

                         "fsl,qmc-hdlc";

            reg = <19>;

            fsl,operational-mode = "hdlc";

            fsl,tx-ts-mask = <0x00000000 0x0000ff00>;

            fsl,rx-ts-mask = <0x00000000 0x0000ff00>;

            fsl,framer = <&framer>;

        };

    };