forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
77 lines
1.8 KiB
77 lines
1.8 KiB
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
|
%YAML 1.2 |
|
--- |
|
$id: http://devicetree.org/schemas/gpio/aspeed,sgpio.yaml# |
|
$schema: http://devicetree.org/meta-schemas/core.yaml# |
|
|
|
title: Aspeed SGPIO controller |
|
|
|
maintainers: |
|
- Andrew Jeffery <[email protected]> |
|
|
|
description: |
|
This SGPIO controller is for ASPEED AST2400, AST2500 and AST2600 SoC, |
|
AST2600 have two sgpio master one with 128 pins another one with 80 pins, |
|
AST2500/AST2400 have one sgpio master with 80 pins. Each of the Serial |
|
GPIO pins can be programmed to support the following options |
|
- Support interrupt option for each input port and various interrupt |
|
sensitivity option (level-high, level-low, edge-high, edge-low) |
|
- Support reset tolerance option for each output port |
|
- Directly connected to APB bus and its shift clock is from APB bus clock |
|
divided by a programmable value. |
|
- Co-work with external signal-chained TTL components (74LV165/74LV595) |
|
|
|
properties: |
|
compatible: |
|
enum: |
|
- aspeed,ast2400-sgpio |
|
- aspeed,ast2500-sgpio |
|
- aspeed,ast2600-sgpiom |
|
|
|
reg: |
|
maxItems: 1 |
|
|
|
gpio-controller: true |
|
|
|
'#gpio-cells': |
|
const: 2 |
|
|
|
interrupts: |
|
maxItems: 1 |
|
|
|
interrupt-controller: true |
|
|
|
clocks: |
|
maxItems: 1 |
|
|
|
ngpios: true |
|
|
|
bus-frequency: true |
|
|
|
required: |
|
- compatible |
|
- reg |
|
- gpio-controller |
|
- '#gpio-cells' |
|
- interrupts |
|
- interrupt-controller |
|
- ngpios |
|
- clocks |
|
- bus-frequency |
|
|
|
additionalProperties: false |
|
|
|
examples: |
|
- | |
|
#include <dt-bindings/clock/aspeed-clock.h> |
|
sgpio: sgpio@1e780200 { |
|
#gpio-cells = <2>; |
|
compatible = "aspeed,ast2500-sgpio"; |
|
gpio-controller; |
|
interrupts = <40>; |
|
reg = <0x1e780200 0x0100>; |
|
clocks = <&syscon ASPEED_CLK_APB>; |
|
interrupt-controller; |
|
ngpios = <80>; |
|
bus-frequency = <12000000>; |
|
};
|
|
|