54 lines
1.6 KiB
Plaintext
Executable file
54 lines
1.6 KiB
Plaintext
Executable file
Memory mapped Bosch CC770 and Intel AN82527 CAN controller
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Note: The CC770 is a CAN controller from Bosch, which is 100%
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compatible with the old AN82527 from Intel, but with "bugs" being fixed.
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Required properties:
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- compatible : should be "bosch,cc770" for the CC770 and "intc,82527"
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for the AN82527.
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- reg : should specify the chip select, address offset and size required
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to map the registers of the controller. The size is usually 0x80.
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- interrupts : property with a value describing the interrupt source
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(number and sensitivity) required for the controller.
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Optional properties:
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- bosch,external-clock-frequency : frequency of the external oscillator
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clock in Hz. Note that the internal clock frequency used by the
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controller is half of that value. If not specified, a default
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value of 16000000 (16 MHz) is used.
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- bosch,clock-out-frequency : slock frequency in Hz on the CLKOUT pin.
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If not specified or if the specified value is 0, the CLKOUT pin
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will be disabled.
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- bosch,slew-rate : slew rate of the CLKOUT signal. If not specified,
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a resonable value will be calculated.
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- bosch,disconnect-rx0-input : see data sheet.
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- bosch,disconnect-rx1-input : see data sheet.
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- bosch,disconnect-tx1-output : see data sheet.
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- bosch,polarity-dominant : see data sheet.
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- bosch,divide-memory-clock : see data sheet.
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- bosch,iso-low-speed-mux : see data sheet.
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For further information, please have a look to the CC770 or AN82527.
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Examples:
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can@3,100 {
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compatible = "bosch,cc770";
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reg = <3 0x100 0x80>;
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interrupts = <2 0>;
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interrupt-parent = <&mpic>;
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bosch,external-clock-frequency = <16000000>;
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};
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