Based on kernel version 2.6.37. Page generated on 2011-03-22 21:57 EST.
1 * Pin configuration nodes 2 3 Required properties: 4 - linux,phandle : phandle of this node; likely referenced by a QE 5 device. 6 - pio-map : array of pin configurations. Each pin is defined by 6 7 integers. The six numbers are respectively: port, pin, dir, 8 open_drain, assignment, has_irq. 9 - port : port number of the pin; 0-6 represent port A-G in UM. 10 - pin : pin number in the port. 11 - dir : direction of the pin, should encode as follows: 12 13 0 = The pin is disabled 14 1 = The pin is an output 15 2 = The pin is an input 16 3 = The pin is I/O 17 18 - open_drain : indicates the pin is normal or wired-OR: 19 20 0 = The pin is actively driven as an output 21 1 = The pin is an open-drain driver. As an output, the pin is 22 driven active-low, otherwise it is three-stated. 23 24 - assignment : function number of the pin according to the Pin Assignment 25 tables in User Manual. Each pin can have up to 4 possible functions in 26 QE and two options for CPM. 27 - has_irq : indicates if the pin is used as source of external 28 interrupts. 29 30 Example: 31 ucc_pin@01 { 32 linux,phandle = <140001>; 33 pio-map = < 34 /* port pin dir open_drain assignment has_irq */ 35 0 3 1 0 1 0 /* TxD0 */ 36 0 4 1 0 1 0 /* TxD1 */ 37 0 5 1 0 1 0 /* TxD2 */ 38 0 6 1 0 1 0 /* TxD3 */ 39 1 6 1 0 3 0 /* TxD4 */ 40 1 7 1 0 1 0 /* TxD5 */ 41 1 9 1 0 2 0 /* TxD6 */ 42 1 a 1 0 2 0 /* TxD7 */ 43 0 9 2 0 1 0 /* RxD0 */ 44 0 a 2 0 1 0 /* RxD1 */ 45 0 b 2 0 1 0 /* RxD2 */ 46 0 c 2 0 1 0 /* RxD3 */ 47 0 d 2 0 1 0 /* RxD4 */ 48 1 1 2 0 2 0 /* RxD5 */ 49 1 0 2 0 2 0 /* RxD6 */ 50 1 4 2 0 2 0 /* RxD7 */ 51 0 7 1 0 1 0 /* TX_EN */ 52 0 8 1 0 1 0 /* TX_ER */ 53 0 f 2 0 1 0 /* RX_DV */ 54 0 10 2 0 1 0 /* RX_ER */ 55 0 0 2 0 1 0 /* RX_CLK */ 56 2 9 1 0 3 0 /* GTX_CLK - CLK10 */ 57 2 8 2 0 1 0>; /* GTX125 - CLK9 */ 58 }; 59