fsl,flexcan.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/net/can/fsl,flexcan.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title:
    8   Flexcan CAN controller on Freescale's ARM and PowerPC system-on-a-chip (SOC).
    9 
   10 maintainers:
   11   - Marc Kleine-Budde <mkl@pengutronix.de>
   12 
   13 allOf:
   14   - $ref: can-controller.yaml#
   15 
   16 properties:
   17   compatible:
   18     oneOf:
   19       - enum:
   20           - fsl,imx8qm-flexcan
   21           - fsl,imx8mp-flexcan
   22           - fsl,imx6q-flexcan
   23           - fsl,imx28-flexcan
   24           - fsl,imx25-flexcan
   25           - fsl,p1010-flexcan
   26           - fsl,vf610-flexcan
   27           - fsl,ls1021ar2-flexcan
   28           - fsl,lx2160ar1-flexcan
   29       - items:
   30           - enum:
   31               - fsl,imx53-flexcan
   32               - fsl,imx35-flexcan
   33           - const: fsl,imx25-flexcan
   34       - items:
   35           - enum:
   36               - fsl,imx7d-flexcan
   37               - fsl,imx6ul-flexcan
   38               - fsl,imx6sx-flexcan
   39           - const: fsl,imx6q-flexcan
   40       - items:
   41           - enum:
   42               - fsl,ls1028ar1-flexcan
   43           - const: fsl,lx2160ar1-flexcan
   44 
   45   reg:
   46     maxItems: 1
   47 
   48   interrupts:
   49     maxItems: 1
   50 
   51   clocks:
   52     maxItems: 2
   53 
   54   clock-names:
   55     items:
   56       - const: ipg
   57       - const: per
   58 
   59   clock-frequency:
   60     description: |
   61       The oscillator frequency driving the flexcan device, filled in by the
   62       boot loader. This property should only be used the used operating system
   63       doesn't support the clocks and clock-names property.
   64 
   65   xceiver-supply:
   66     description: Regulator that powers the CAN transceiver.
   67 
   68   big-endian:
   69     $ref: /schemas/types.yaml#/definitions/flag
   70     description: |
   71       This means the registers of FlexCAN controller are big endian. This is
   72       optional property.i.e. if this property is not present in device tree
   73       node then controller is assumed to be little endian. If this property is
   74       present then controller is assumed to be big endian.
   75 
   76   fsl,stop-mode:
   77     description: |
   78       Register bits of stop mode control.
   79 
   80       The format should be as follows:
   81       <gpr req_gpr req_bit>
   82       gpr is the phandle to general purpose register node.
   83       req_gpr is the gpr register offset of CAN stop request.
   84       req_bit is the bit offset of CAN stop request.
   85     $ref: /schemas/types.yaml#/definitions/phandle-array
   86     items:
   87       - items:
   88           - description: The 'gpr' is the phandle to general purpose register node.
   89           - description: The 'req_gpr' is the gpr register offset of CAN stop request.
   90             maximum: 0xff
   91           - description: The 'req_bit' is the bit offset of CAN stop request.
   92             maximum: 0x1f
   93 
   94   fsl,clk-source:
   95     description: |
   96       Select the clock source to the CAN Protocol Engine (PE). It's SoC
   97       implementation dependent. Refer to RM for detailed definition. If this
   98       property is not set in device tree node then driver selects clock source 1
   99       by default.
  100       0: clock source 0 (oscillator clock)
  101       1: clock source 1 (peripheral clock)
  102     $ref: /schemas/types.yaml#/definitions/uint8
  103     default: 1
  104     minimum: 0
  105     maximum: 1
  106 
  107   wakeup-source:
  108     $ref: /schemas/types.yaml#/definitions/flag
  109     description:
  110       Enable CAN remote wakeup.
  111 
  112   fsl,scu-index:
  113     description: |
  114       The scu index of CAN instance.
  115       For SoCs with SCU support, need setup stop mode via SCU firmware, so this
  116       property can help indicate a resource. It supports up to 3 CAN instances
  117       now.
  118     $ref: /schemas/types.yaml#/definitions/uint8
  119     minimum: 0
  120     maximum: 2
  121 
  122   termination-gpios: true
  123   termination-ohms: true
  124 
  125 required:
  126   - compatible
  127   - reg
  128   - interrupts
  129 
  130 additionalProperties: false
  131 
  132 examples:
  133   - |
  134     can@1c000 {
  135         compatible = "fsl,p1010-flexcan";
  136         reg = <0x1c000 0x1000>;
  137         interrupts = <48 0x2>;
  138         interrupt-parent = <&mpic>;
  139         clock-frequency = <200000000>;
  140         fsl,clk-source = /bits/ 8 <0>;
  141     };
  142   - |
  143     #include <dt-bindings/interrupt-controller/irq.h>
  144 
  145     can@2090000 {
  146         compatible = "fsl,imx6q-flexcan";
  147         reg = <0x02090000 0x4000>;
  148         interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH>;
  149         clocks = <&clks 1>, <&clks 2>;
  150         clock-names = "ipg", "per";
  151         fsl,stop-mode = <&gpr 0x34 28>;
  152         fsl,scu-index = /bits/ 8 <1>;
  153     };
  154   - |
  155     #include <dt-bindings/interrupt-controller/irq.h>
  156     #include <dt-bindings/gpio/gpio.h>
  157 
  158     can@2090000 {
  159         compatible = "fsl,imx6q-flexcan";
  160         reg = <0x02090000 0x4000>;
  161         interrupts = <0 110 IRQ_TYPE_LEVEL_HIGH>;
  162         clocks = <&clks 1>, <&clks 2>;
  163         clock-names = "ipg", "per";
  164         fsl,stop-mode = <&gpr 0x34 28>;
  165         termination-gpios = <&gpio1 0 GPIO_ACTIVE_LOW>;
  166         termination-ohms = <120>;
  167     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/net/can/fsl,flexcan.yaml

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sys/contrib/device-tree/Bindings/net/can/fsl,flexcan.yaml