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";
};