Kernel-3.10.0-957.el7_pincfg

• Pin configuration nodes

Required properties:

• linux,phandle : phandle of this node; likely referenced by a QE
  device.

• pio-map : array of pin configurations. Each pin is defined by 6
  integers. The six numbers are respectively: port, pin, dir,
  open_drain, assignment, has_irq.

  • port : port number of the pin; 0-6 represent port A-G in UM.

  • pin : pin number in the port.

  • dir : direction of the pin, should encode as follows:

    0 = The pin is disabled
    1 = The pin is an output
    2 = The pin is an input
    3 = The pin is I/O

  • open_drain : indicates the pin is normal or wired-OR:

    0 = The pin is actively driven as an output
    1 = The pin is an open-drain driver. As an output, the pin is

     driven active-low, otherwise it is three-stated.
    

  • assignment : function number of the pin according to the Pin Assignment
    tables in User Manual. Each pin can have up to 4 possible functions in
    QE and two options for CPM.

  • has_irq : indicates if the pin is used as source of external
    interrupts.

Example:
ucc_pin@01 {
linux,phandle = <140001>;
pio-map = <
/* port pin dir open_drain assignment has_irq */
0 3 1 0 1 0 /* TxD0 */
0 4 1 0 1 0 /* TxD1 */
0 5 1 0 1 0 /* TxD2 */
0 6 1 0 1 0 /* TxD3 */
1 6 1 0 3 0 /* TxD4 */
1 7 1 0 1 0 /* TxD5 */
1 9 1 0 2 0 /* TxD6 */
1 a 1 0 2 0 /* TxD7 */
0 9 2 0 1 0 /* RxD0 */
0 a 2 0 1 0 /* RxD1 */
0 b 2 0 1 0 /* RxD2 */
0 c 2 0 1 0 /* RxD3 */
0 d 2 0 1 0 /* RxD4 */
1 1 2 0 2 0 /* RxD5 */
1 0 2 0 2 0 /* RxD6 */
1 4 2 0 2 0 /* RxD7 */
0 7 1 0 1 0 /* TX_EN */
0 8 1 0 1 0 /* TX_ER */
0 f 2 0 1 0 /* RX_DV */
0 10 2 0 1 0 /* RX_ER */
0 0 2 0 1 0 /* RX_CLK */
2 9 1 0 3 0 /* GTX_CLK - CLK10 */
2 8 2 0 1 0>; /* GTX125 - CLK9 */
};