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$FreeBSD: release/9.1.0/sys/boot/fdt/dts/bindings-mpp.txt 208561 2010-05-26 09:50:09Z raj $
* Multi purpose pin (MPP) configuration.
Required properties:
- pin-map : array of pin configurations. Each pin is defined by 2 cells,
respectively: <pin> <function>. Pins not specified in the pin-map property
are assumed to have default value of <function> = 0, which means GPIO.
- pin : pin number.
- function : function ID of the pin according to the assignment tables in
User Manual. Each pin can have many possible functions depending on the
MPP unit incarnation.
- pin-count: number of the physical MPP connections on the SOC (depending on
the model it can be 24-50, or possibly else in future devices).
Example:
mpp@10000 {
#pin-cells = <2>;
compatible = "mrvl,mpp";
reg = <0x10000 0x34>;
pin-count= <50>;
pin-map = <
0 1 /* MPP[0]: NF_IO[2] */
1 1 /* MPP[1]: NF_IO[3] */
2 1 /* MPP[2]: NF_IO[4] */
3 1 /* MPP[3]: NF_IO[5] */
4 1 /* MPP[4]: NF_IO[6] */
5 1 /* MPP[5]: NF_IO[7] */
6 1 /* MPP[6]: SYSRST_OUTn */
7 2 /* MPP[7]: SPI_SCn */
8 1 /* MPP[8]: TW_SDA */
9 1 /* MPP[9]: TW_SCK */
10 3 /* MPP[10]: UA0_TXD */
11 3 /* MPP[11]: UA0_RXD */
12 1 /* MPP[12]: SD_CLK */
13 1 /* MPP[13]: SD_CMD */
14 1 /* MPP[14]: SD_D[0] */
15 1 /* MPP[15]: SD_D[1] */
16 1 /* MPP[16]: SD_D[2] */
17 1 /* MPP[17]: SD_D[3] */
18 1 /* MPP[18]: NF_IO[0] */
19 1 /* MPP[19]: NF_IO[1] */
20 5 /* MPP[20]: SATA1_AC */
21 5 >; /* MPP[21]: SATA0_AC */
};