1 Broadcom STB "UPG GIO" GPIO controller
3 The controller's registers are organized as sets of eight 32-bit
4 registers with each set controlling a bank of up to 32 pins. A single
5 interrupt is shared for all of the banks handled by the controller.
10 Must be "brcm,brcmstb-gpio"
13 Define the base and range of the I/O address space containing
14 the brcmstb GPIO controller registers
17 Should be <2>. The first cell is the pin number (within the controller's
18 pin space), and the second is used for the following:
19 bit[0]: polarity (0 for active-high, 1 for active-low)
22 Specifies that the node is a GPIO controller.
24 - brcm,gpio-bank-widths:
25 Number of GPIO lines for each bank. Number of elements must
26 correspond to number of banks suggested by the 'reg' property.
31 The interrupt shared by all GPIO lines for this controller.
33 - interrupts-extended:
34 Alternate form of specifying interrupts and parents that allows for
35 multiple parents. This takes precedence over 'interrupts' and
36 'interrupt-parent'. Wakeup-capable GPIO controllers often route their
37 wakeup interrupt lines through a different interrupt controller than the
38 primary interrupt line, making this property necessary.
41 Should be <2>. The first cell is the GPIO number, the second should specify
42 flags. The following subset of flags is supported:
43 - bits[3:0] trigger type and level flags
44 1 = low-to-high edge triggered
45 2 = high-to-low edge triggered
46 4 = active high level-sensitive
47 8 = active low level-sensitive
48 Valid combinations are 1, 2, 3, 4, 8.
49 See also Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
51 - interrupt-controller:
52 Marks the device node as an interrupt controller
55 GPIOs for this controller can be used as a wakeup source
58 upg_gio: gpio@f040a700 {
60 #interrupt-cells = <2>;
61 compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio";
64 reg = <0xf040a700 0x80>;
65 interrupt-parent = <&irq0_intc>;
67 brcm,gpio-bank-widths = <32 32 32 24>;
70 upg_gio_aon: gpio@f04172c0 {
72 #interrupt-cells = <2>;
73 compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio";
76 reg = <0xf04172c0 0x40>;
77 interrupt-parent = <&irq0_aon_intc>;
79 interrupts-extended = <&irq0_aon_intc 0x6>,
80 <&aon_pm_l2_intc 0x5>;
82 brcm,gpio-bank-widths = <18 4>;