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.
34 phandle of the parent interrupt controller
37 Should be <2>. The first cell is the GPIO number, the second should specify
38 flags. The following subset of flags is supported:
39 - bits[3:0] trigger type and level flags
40 1 = low-to-high edge triggered
41 2 = high-to-low edge triggered
42 4 = active high level-sensitive
43 8 = active low level-sensitive
44 Valid combinations are 1, 2, 3, 4, 8.
45 See also Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
47 - interrupt-controller:
48 Marks the device node as an interrupt controller
51 The name of the IRQ resource used by this controller
54 upg_gio: gpio@f040a700 {
56 #interrupt-cells = <0x2>;
57 compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio";
60 reg = <0xf040a700 0x80>;
61 interrupt-parent = <0xf>;
63 interrupt-names = "upg_gio";
64 brcm,gpio-bank-widths = <0x20 0x20 0x20 0x18>;