| Memory mapped SJA1000 CAN controller from NXP (formerly Philips) |
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| Required properties: |
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| - compatible : should be "nxp,sja1000". |
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| - reg : should specify the chip select, address offset and size required |
| to map the registers of the SJA1000. The size is usually 0x80. |
| |
| - interrupts: property with a value describing the interrupt source |
| (number and sensitivity) required for the SJA1000. |
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| Optional properties: |
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| - reg-io-width : Specify the size (in bytes) of the IO accesses that |
| should be performed on the device. Valid value is 1, 2 or 4. |
| Default to 1 (8 bits). |
| |
| - nxp,external-clock-frequency : Frequency of the external oscillator |
| clock in Hz. Note that the internal clock frequency used by the |
| SJA1000 is half of that value. If not specified, a default value |
| of 16000000 (16 MHz) is used. |
| |
| - nxp,tx-output-mode : operation mode of the TX output control logic: |
| <0x0> : bi-phase output mode |
| <0x1> : normal output mode (default) |
| <0x2> : test output mode |
| <0x3> : clock output mode |
| |
| - nxp,tx-output-config : TX output pin configuration: |
| <0x01> : TX0 invert |
| <0x02> : TX0 pull-down (default) |
| <0x04> : TX0 pull-up |
| <0x06> : TX0 push-pull |
| <0x08> : TX1 invert |
| <0x10> : TX1 pull-down |
| <0x20> : TX1 pull-up |
| <0x30> : TX1 push-pull |
| |
| - nxp,clock-out-frequency : clock frequency in Hz on the CLKOUT pin. |
| If not specified or if the specified value is 0, the CLKOUT pin |
| will be disabled. |
| |
| - nxp,no-comparator-bypass : Allows to disable the CAN input comparator. |
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| For further information, please have a look to the SJA1000 data sheet. |
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| Examples: |
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| can@3,100 { |
| compatible = "nxp,sja1000"; |
| reg = <3 0x100 0x80>; |
| interrupts = <2 0>; |
| interrupt-parent = <&mpic>; |
| nxp,external-clock-frequency = <16000000>; |
| }; |
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