Based on kernel version 6.13
. Page generated on 2025-01-21 08:20 EST
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | Broadcom Northstar plus (NSP) GPIO/PINCONF Controller Required properties: - compatible: Must be "brcm,nsp-gpio-a" - reg: Should contain the register physical address and length for each of GPIO base, IO control registers - #gpio-cells: Must be two. The first cell is the GPIO pin number (within the controller's pin space) and the second cell is used for the following: bit[0]: polarity (0 for active high and 1 for active low) - gpio-controller: Specifies that the node is a GPIO controller - ngpios: Number of gpios supported (58x25 supports 32 and 58x23 supports 24) Optional properties: - interrupts: Interrupt ID - interrupt-controller: Specifies that the node is an interrupt controller - gpio-ranges: Specifies the mapping between gpio controller and pin-controllers pins. This requires 4 fields in cells defined as - 1. Phandle of pin-controller. 2. GPIO base pin offset. 3 Pin-control base pin offset. 4. number of gpio pins which are linearly mapped from pin base. Supported generic PINCONF properties in child nodes: - pins: The list of pins (within the controller's own pin space) that properties in the node apply to. Pin names are "gpio-<pin>" - bias-disable: Disable pin bias - bias-pull-up: Enable internal pull up resistor - bias-pull-down: Enable internal pull down resistor - drive-strength: Valid drive strength values include 2, 4, 6, 8, 10, 12, 14, 16 (mA) Example: gpioa: gpio@18000020 { compatible = "brcm,nsp-gpio-a"; reg = <0x18000020 0x100>, <0x1803f1c4 0x1c>; #gpio-cells = <2>; gpio-controller; ngpios = <32>; gpio-ranges = <&pinctrl 0 0 31>; interrupt-controller; interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; /* Hog a few default settings */ pinctrl-names = "default"; pinctrl-0 = <&led>; led: led { pins = "gpio-1"; bias-pull-up; }; pwr: pwr { gpio-hog; gpios = <3 1>; output-high; }; }; |