cc770.txt (1625B)
1Memory mapped Bosch CC770 and Intel AN82527 CAN controller 2 3Note: The CC770 is a CAN controller from Bosch, which is 100% 4compatible with the old AN82527 from Intel, but with "bugs" being fixed. 5 6Required properties: 7 8- compatible : should be "bosch,cc770" for the CC770 and "intc,82527" 9 for the AN82527. 10 11- reg : should specify the chip select, address offset and size required 12 to map the registers of the controller. The size is usually 0x80. 13 14- interrupts : property with a value describing the interrupt source 15 (number and sensitivity) required for the controller. 16 17Optional properties: 18 19- bosch,external-clock-frequency : frequency of the external oscillator 20 clock in Hz. Note that the internal clock frequency used by the 21 controller is half of that value. If not specified, a default 22 value of 16000000 (16 MHz) is used. 23 24- bosch,clock-out-frequency : slock frequency in Hz on the CLKOUT pin. 25 If not specified or if the specified value is 0, the CLKOUT pin 26 will be disabled. 27 28- bosch,slew-rate : slew rate of the CLKOUT signal. If not specified, 29 a resonable value will be calculated. 30 31- bosch,disconnect-rx0-input : see data sheet. 32 33- bosch,disconnect-rx1-input : see data sheet. 34 35- bosch,disconnect-tx1-output : see data sheet. 36 37- bosch,polarity-dominant : see data sheet. 38 39- bosch,divide-memory-clock : see data sheet. 40 41- bosch,iso-low-speed-mux : see data sheet. 42 43For further information, please have a look to the CC770 or AN82527. 44 45Examples: 46 47can@3,100 { 48 compatible = "bosch,cc770"; 49 reg = <3 0x100 0x80>; 50 interrupts = <2 0>; 51 interrupt-parent = <&mpic>; 52 bosch,external-clock-frequency = <16000000>; 53};