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53 lines
1.6 KiB
53 lines
1.6 KiB
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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