David Venhoff
cfcea9ee67
Based off b80915eb99
and compacted into a single commit so that it will fit on the uni git server
54 lines
1.6 KiB
Plaintext
54 lines
1.6 KiB
Plaintext
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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