1 Memory mapped SJA1000 CAN controller from NXP (formerly Philips)
2
3 Required properties:
4
5 - compatible : should be one of "nxp,sja1000", "technologic,sja1000".
6
7 - reg : should specify the chip select, address offset and size required
8 to map the registers of the SJA1000. The size is usually 0x80.
9
10 - interrupts: property with a value describing the interrupt source
11 (number and sensitivity) required for the SJA1000.
12
13 Optional properties:
14
15 - reg-io-width : Specify the size (in bytes) of the IO accesses that
16 should be performed on the device. Valid value is 1, 2 or 4.
17 This property is ignored for technologic version.
18 Default to 1 (8 bits).
19
20 - nxp,external-clock-frequency : Frequency of the external oscillator
21 clock in Hz. Note that the internal clock frequency used by the
22 SJA1000 is half of that value. If not specified, a default value
23 of 16000000 (16 MHz) is used.
24
25 - nxp,tx-output-mode : operation mode of the TX output control logic:
26 <0x0> : bi-phase output mode
27 <0x1> : normal output mode (default)
28 <0x2> : test output mode
29 <0x3> : clock output mode
30
31 - nxp,tx-output-config : TX output pin configuration:
32 <0x01> : TX0 invert
33 <0x02> : TX0 pull-down (default)
34 <0x04> : TX0 pull-up
35 <0x06> : TX0 push-pull
36 <0x08> : TX1 invert
37 <0x10> : TX1 pull-down
38 <0x20> : TX1 pull-up
39 <0x30> : TX1 push-pull
40
41 - nxp,clock-out-frequency : clock frequency in Hz on the CLKOUT pin.
42 If not specified or if the specified value is 0, the CLKOUT pin
43 will be disabled.
44
45 - nxp,no-comparator-bypass : Allows to disable the CAN input comparator.
46
47 For further information, please have a look to the SJA1000 data sheet.
48
49 Examples:
50
51 can@3,100 {
52 compatible = "nxp,sja1000";
53 reg = <3 0x100 0x80>;
54 interrupts = <2 0>;
55 interrupt-parent = <&mpic>;
56 nxp,external-clock-frequency = <16000000>;
57 };
58
Cache object: f6a7fbcd7a5343182687b88da5df7332
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