Documentation/devicetree/bindings/pinctrl/brcm,nsp-pinmux.txt

   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"