xilinx_can.txt

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    1 Xilinx Axi CAN/Zynq CANPS controller Device Tree Bindings
    2 ---------------------------------------------------------
    3 
    4 Required properties:
    5 - compatible            : Should be:
    6                           - "xlnx,zynq-can-1.0" for Zynq CAN controllers
    7                           - "xlnx,axi-can-1.00.a" for Axi CAN controllers
    8                           - "xlnx,canfd-1.0" for CAN FD controllers
    9                           - "xlnx,canfd-2.0" for CAN FD 2.0 controllers
   10 - reg                   : Physical base address and size of the controller
   11                           registers map.
   12 - interrupts            : Property with a value describing the interrupt
   13                           number.
   14 - clock-names           : List of input clock names
   15                           - "can_clk", "pclk" (For CANPS),
   16                           - "can_clk", "s_axi_aclk" (For AXI CAN and CAN FD).
   17                           (See clock bindings for details).
   18 - clocks                : Clock phandles (see clock bindings for details).
   19 - tx-fifo-depth         : Can Tx fifo depth (Zynq, Axi CAN).
   20 - rx-fifo-depth         : Can Rx fifo depth (Zynq, Axi CAN, CAN FD in
   21                           sequential Rx mode).
   22 - tx-mailbox-count      : Can Tx mailbox buffer count (CAN FD).
   23 - rx-mailbox-count      : Can Rx mailbox buffer count (CAN FD in mailbox Rx
   24                           mode).
   25 
   26 
   27 Example:
   28 
   29 For Zynq CANPS Dts file:
   30         zynq_can_0: can@e0008000 {
   31                         compatible = "xlnx,zynq-can-1.0";
   32                         clocks = <&clkc 19>, <&clkc 36>;
   33                         clock-names = "can_clk", "pclk";
   34                         reg = <0xe0008000 0x1000>;
   35                         interrupts = <0 28 4>;
   36                         interrupt-parent = <&intc>;
   37                         tx-fifo-depth = <0x40>;
   38                         rx-fifo-depth = <0x40>;
   39                 };
   40 For Axi CAN Dts file:
   41         axi_can_0: axi-can@40000000 {
   42                         compatible = "xlnx,axi-can-1.00.a";
   43                         clocks = <&clkc 0>, <&clkc 1>;
   44                         clock-names = "can_clk","s_axi_aclk" ;
   45                         reg = <0x40000000 0x10000>;
   46                         interrupt-parent = <&intc>;
   47                         interrupts = <0 59 1>;
   48                         tx-fifo-depth = <0x40>;
   49                         rx-fifo-depth = <0x40>;
   50                 };
   51 For CAN FD Dts file:
   52         canfd_0: canfd@40000000 {
   53                         compatible = "xlnx,canfd-1.0";
   54                         clocks = <&clkc 0>, <&clkc 1>;
   55                         clock-names = "can_clk", "s_axi_aclk";
   56                         reg = <0x40000000 0x2000>;
   57                         interrupt-parent = <&intc>;
   58                         interrupts = <0 59 1>;
   59                         tx-mailbox-count = <0x20>;
   60                         rx-fifo-depth = <0x20>;
   61                 };

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