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 --- .../soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml index 82d9beb48e00..61dfd5ef7407 100644 --- a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml +++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml @@ -101,6 +101,27 @@ patternProperties: Channel assigned Rx time-slots within the Rx time-slots routed by the TSA to this cell.
+ compatible: + 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 @@ -159,5 +180,8 @@ examples: fsl,operational-mode = "hdlc"; fsl,tx-ts-mask = <0x00000000 0x0000ff00>; fsl,rx-ts-mask = <0x00000000 0x0000ff00>; + + compatible = "fsl,qmc-hdlc"; + fsl,framer = <&framer>; }; };