| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/gpio/brcm,brcmstb-gpio.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Broadcom STB "UPG GIO" GPIO controller |
| 8 | |
| 9 | description: > |
| 10 | The controller's registers are organized as sets of eight 32-bit |
| 11 | registers with each set controlling a bank of up to 32 pins. A single |
| 12 | interrupt is shared for all of the banks handled by the controller. |
| 13 | |
| 14 | maintainers: |
| 15 | - Doug Berger <opendmb@gmail.com> |
| 16 | - Florian Fainelli <f.fainelli@gmail.com> |
| 17 | |
| 18 | properties: |
| 19 | compatible: |
| 20 | items: |
| 21 | - enum: |
| 22 | - brcm,bcm7445-gpio |
| 23 | - const: brcm,brcmstb-gpio |
| 24 | |
| 25 | reg: |
| 26 | maxItems: 1 |
| 27 | description: > |
| 28 | Define the base and range of the I/O address space containing |
| 29 | the brcmstb GPIO controller registers |
| 30 | |
| 31 | "#gpio-cells": |
| 32 | const: 2 |
| 33 | description: > |
| 34 | The first cell is the pin number (within the controller's |
| 35 | pin space), and the second is used for the following: |
| 36 | bit[0]: polarity (0 for active-high, 1 for active-low) |
| 37 | |
| 38 | gpio-controller: true |
| 39 | |
| 40 | brcm,gpio-bank-widths: |
| 41 | $ref: /schemas/types.yaml#/definitions/uint32-array |
| 42 | description: > |
| 43 | Number of GPIO lines for each bank. Number of elements must |
| 44 | correspond to number of banks suggested by the 'reg' property. |
| 45 | |
| 46 | interrupts: |
| 47 | maxItems: 1 |
| 48 | description: > |
| 49 | The interrupt shared by all GPIO lines for this controller. |
| 50 | |
| 51 | "#interrupt-cells": |
| 52 | const: 2 |
| 53 | description: | |
| 54 | The first cell is the GPIO number, the second should specify |
| 55 | flags. The following subset of flags is supported: |
| 56 | - bits[3:0] trigger type and level flags |
| 57 | 1 = low-to-high edge triggered |
| 58 | 2 = high-to-low edge triggered |
| 59 | 4 = active high level-sensitive |
| 60 | 8 = active low level-sensitive |
| 61 | Valid combinations are 1, 2, 3, 4, 8. |
| 62 | |
| 63 | interrupt-controller: true |
| 64 | |
| 65 | wakeup-source: |
| 66 | type: boolean |
| 67 | description: > |
| 68 | GPIOs for this controller can be used as a wakeup source |
| 69 | |
| 70 | required: |
| 71 | - compatible |
| 72 | - reg |
| 73 | - gpio-controller |
| 74 | - "#gpio-cells" |
| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [diff] [blame] | 75 | - brcm,gpio-bank-widths |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 76 | |
| 77 | additionalProperties: false |
| 78 | |
| 79 | examples: |
| 80 | - | |
| 81 | upg_gio: gpio@f040a700 { |
| 82 | #gpio-cells = <2>; |
| 83 | #interrupt-cells = <2>; |
| 84 | compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio"; |
| 85 | gpio-controller; |
| 86 | interrupt-controller; |
| 87 | reg = <0xf040a700 0x80>; |
| 88 | interrupt-parent = <&irq0_intc>; |
| 89 | interrupts = <0x6>; |
| 90 | brcm,gpio-bank-widths = <32 32 32 24>; |
| 91 | }; |
| 92 | |
| 93 | upg_gio_aon: gpio@f04172c0 { |
| 94 | #gpio-cells = <2>; |
| 95 | #interrupt-cells = <2>; |
| 96 | compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio"; |
| 97 | gpio-controller; |
| 98 | interrupt-controller; |
| 99 | reg = <0xf04172c0 0x40>; |
| 100 | interrupt-parent = <&irq0_aon_intc>; |
| 101 | interrupts = <0x6>; |
| 102 | wakeup-source; |
| 103 | brcm,gpio-bank-widths = <18 4>; |
| 104 | }; |