1$FreeBSD: releng/10.3/sys/boot/fdt/dts/bindings-mpp.txt 208561 2010-05-26 09:50:09Z raj $ 2 3* Multi purpose pin (MPP) configuration. 4 5Required properties: 6 7- pin-map : array of pin configurations. Each pin is defined by 2 cells, 8 respectively: <pin> <function>. Pins not specified in the pin-map property 9 are assumed to have default value of <function> = 0, which means GPIO. 10 11 - pin : pin number. 12 13 - function : function ID of the pin according to the assignment tables in 14 User Manual. Each pin can have many possible functions depending on the 15 MPP unit incarnation. 16 17- pin-count: number of the physical MPP connections on the SOC (depending on 18 the model it can be 24-50, or possibly else in future devices). 19 20Example: 21 22 mpp@10000 { 23 #pin-cells = <2>; 24 compatible = "mrvl,mpp"; 25 reg = <0x10000 0x34>; 26 pin-count= <50>; 27 pin-map = < 28 0 1 /* MPP[0]: NF_IO[2] */ 29 1 1 /* MPP[1]: NF_IO[3] */ 30 2 1 /* MPP[2]: NF_IO[4] */ 31 3 1 /* MPP[3]: NF_IO[5] */ 32 4 1 /* MPP[4]: NF_IO[6] */ 33 5 1 /* MPP[5]: NF_IO[7] */ 34 6 1 /* MPP[6]: SYSRST_OUTn */ 35 7 2 /* MPP[7]: SPI_SCn */ 36 8 1 /* MPP[8]: TW_SDA */ 37 9 1 /* MPP[9]: TW_SCK */ 38 10 3 /* MPP[10]: UA0_TXD */ 39 11 3 /* MPP[11]: UA0_RXD */ 40 12 1 /* MPP[12]: SD_CLK */ 41 13 1 /* MPP[13]: SD_CMD */ 42 14 1 /* MPP[14]: SD_D[0] */ 43 15 1 /* MPP[15]: SD_D[1] */ 44 16 1 /* MPP[16]: SD_D[2] */ 45 17 1 /* MPP[17]: SD_D[3] */ 46 18 1 /* MPP[18]: NF_IO[0] */ 47 19 1 /* MPP[19]: NF_IO[1] */ 48 20 5 /* MPP[20]: SATA1_AC */ 49 21 5 >; /* MPP[21]: SATA0_AC */ 50 }; 51