Kernel-4.18.0-80.el8_network

  • Network

Currently defined compatibles:

  • fsl,cpm1-scc-enet
  • fsl,cpm2-scc-enet
  • fsl,cpm1-fec-enet
  • fsl,cpm2-fcc-enet (third resource is GFEMR)
  • fsl,qe-enet

Example:

ethernet@11300 {
    compatible = "fsl,mpc8272-fcc-enet",
             "fsl,cpm2-fcc-enet";
    reg = <11300 20 8400 100 11390 1>;
    local-mac-address = [ 00 00 00 00 00 00 ];
    interrupts = <20 8>;
    interrupt-parent = <&PIC>;
    phy-handle = <&PHY0>;
    fsl,cpm-command = <12000300>;
};
  • MDIO

Currently defined compatibles:
fsl,pq1-fec-mdio (reg is same as first resource of FEC device)
fsl,cpm2-mdio-bitbang (reg is port C registers)

Properties for fsl,cpm2-mdio-bitbang:
fsl,mdio-pin : pin of port C controlling mdio data
fsl,mdc-pin : pin of port C controlling mdio clock

Example:
mdio@10d40 {
compatible = “fsl,mpc8272ads-mdio-bitbang”,
“fsl,mpc8272-mdio-bitbang”,
“fsl,cpm2-mdio-bitbang”;
reg = <10d40 14>;
#address-cells = <1>;
#size-cells = <0>;
fsl,mdio-pin = <12>;
fsl,mdc-pin = <13>;
};

  • HDLC

Currently defined compatibles:

  • fsl,ucc-hdlc

Properties for fsl,ucc-hdlc:

  • rx-clock-name

  • tx-clock-name
    Usage: required
    Value type:
    Definition : Must be “brg1”-“brg16” for internal clock source,

           Must be "clk1"-"clk24" for external clock source.
    
  • fsl,tdm-interface
    Usage: optional
    Value type:
    Definition : Specify that hdlc is based on tdm-interface

The property below is dependent on fsl,tdm-interface:

  • fsl,rx-sync-clock
    Usage: required
    Value type:
    Definition : Must be “none”, “rsync_pin”, “brg9-11” and “brg13-15”.

  • fsl,tx-sync-clock
    Usage: required
    Value type:
    Definition : Must be “none”, “tsync_pin”, “brg9-11” and “brg13-15”.

  • fsl,tdm-framer-type
    Usage: required for tdm interface
    Value type:
    Definition : “e1” or “t1”.Now e1 and t1 are used, other framer types

           are not supported.
    
  • fsl,tdm-id
    Usage: required for tdm interface
    Value type:
    Definition : number of TDM ID

  • fsl,tx-timeslot-mask

  • fsl,rx-timeslot-mask
    Usage: required for tdm interface
    Value type:
    Definition : time slot mask for TDM operation. Indicates which time

           slots used for transmitting and receiving.
    
  • fsl,siram-entry-id
    Usage: required for tdm interface
    Value type:
    Definition : Must be 0,2,4…64. the number of TDM entry.

  • fsl,tdm-internal-loopback
    usage: optional for tdm interface
    value type:
    Definition : Internal loopback connecting on TDM layer.

Example for tdm interface:

ucc@2000 {
    compatible = "fsl,ucc-hdlc";
    rx-clock-name = "clk8";
    tx-clock-name = "clk9";
    fsl,rx-sync-clock = "rsync_pin";
    fsl,tx-sync-clock = "tsync_pin";
    fsl,tx-timeslot-mask = <0xfffffffe>;
    fsl,rx-timeslot-mask = <0xfffffffe>;
    fsl,tdm-framer-type = "e1";
    fsl,tdm-id = <0>;
    fsl,siram-entry-id = <0>;
    fsl,tdm-interface;
};

Example for hdlc without tdm interface:

ucc@2000 {
    compatible = "fsl,ucc-hdlc";
    rx-clock-name = "brg1";
    tx-clock-name = "brg1";
};