1 Broadcom NSP (Northstar plus) IOMUX Controller
2
3 The NSP IOMUX controller supports group based mux configuration. In
4 addition, certain pins can be muxed to GPIO function individually.
5
6 Required properties:
7 - compatible:
8 Must be "brcm,nsp-pinmux"
9
10 - reg:
11 Should contain the register physical address and length for each of
12 GPIO_CONTROL0, GP_AUX_SEL and IPROC_CONFIG IOMUX registers
13
14 Properties in subnodes:
15 - function:
16 The mux function to select
17
18 - groups:
19 The list of groups to select with a given function
20
21 For more details, refer to
22 Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
23
24 For example:
25
26 pinmux: pinmux@1803f1c0 {
27 compatible = "brcm,nsp-pinmux";
28 reg = <0x1803f1c0 0x04>,
29 <0x18030028 0x04>,
30 <0x1803f408 0x04>;
31
32 pinctrl-names = "default";
33 pinctrl-0 = <&pwm>, <&gpio_b>, <&nand_sel>;
34
35 pwm: pwm {
36 function = "pwm";
37 groups = "pwm0_grp", "pwm1_grp";
38 };
39
40 gpio_b: gpio_b {
41 function = "gpio_b";
42 groups = "gpio_b_0_grp", "gpio_b_1_grp";
43 };
44
45 nand_sel: nand_sel {
46 function = "nand";
47 groups = "nand_grp";
48 };
49 };
50
51 List of supported functions and groups in Northstar Plus:
52
53 "spi": "spi_grp"
54
55 "i2c": "i2c_grp"
56
57 "mdio": "mdio_grp"
58
59 "pwm": "pwm0_grp", "pwm1_grp", "pwm2_grp", "pwm3_grp"
60
61 "gpio_b": "gpio_b_0_grp", "gpio_b_1_grp", "gpio_b_2_grp", "gpio_b_3_grp"
62
63 "uart1": "uart1_grp"
64
65 "uart2": "uart2_grp"
66
67 "synce": "synce_grp"
68
69 "sata_led_grps": "sata0_led_grp", "sata1_led_grp"
70
71 "xtal_out": "xtal_out_grp"
72
73 "sdio": "sdio_pwr_grp", "sdio_1p8v_grp"
74
75 "switch_led": "switch_p05_led0_grp", "switch_p05_led1_grp"
76
77 "nand": "nand_grp"
78
79 "emmc": "emmc_grp"
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