On 22/09/2023 09:58, Herve Codina wrote: > 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@xxxxxxxxxxx> > --- > .../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 Why this is not a device/SoC specific compatible? > + > + 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"; compatible is always the first property. > + fsl,framer = <&framer>; > }; > }; Best regards, Krzysztof
