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|
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/sophgo,cv1800-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Sophgo CV1800 Pin Controller
maintainers:
- Inochi Amaoto <inochiama@outlook.com>
properties:
compatible:
enum:
- sophgo,cv1800b-pinctrl
- sophgo,cv1812h-pinctrl
- sophgo,sg2000-pinctrl
- sophgo,sg2002-pinctrl
reg:
items:
- description: pinctrl for system domain
- description: pinctrl for rtc domain
reg-names:
items:
- const: sys
- const: rtc
resets:
maxItems: 1
patternProperties:
'-cfg$':
type: object
description:
A pinctrl node should contain at least one subnode representing the
pinctrl groups available on the machine.
additionalProperties: false
patternProperties:
'-pins$':
type: object
description: |
Each subnode will list the pins it needs, and how they should
be configured, with regard to muxer configuration, bias, input
enable/disable, input schmitt trigger, slew-rate, drive strength
and bus hold state. In addition, all pins in the same subnode
should have the same power domain. For configuration detail,
refer to https://github.com/sophgo/sophgo-doc/.
allOf:
- $ref: pincfg-node.yaml#
- $ref: pinmux-node.yaml#
properties:
pinmux:
description: |
The list of GPIOs and their mux settings that properties in the
node apply to. This should be set using the GPIOMUX or GPIOMUX2
macro.
bias-pull-up:
type: boolean
bias-pull-down:
type: boolean
drive-strength-microamp:
description: typical current when output high level.
input-schmitt-microvolt:
description: typical threshold for schmitt trigger.
power-source:
description: power supplies at X mV.
enum: [ 1800, 3300 ]
slew-rate:
description: slew rate for output buffer (0 is fast, 1 is slow)
enum: [ 0, 1 ]
bias-bus-hold: true
required:
- pinmux
- power-source
additionalProperties: false
required:
- compatible
- reg
- reg-names
additionalProperties: false
examples:
- |
#include <dt-bindings/pinctrl/pinctrl-cv1800b.h>
pinctrl@3001000 {
compatible = "sophgo,cv1800b-pinctrl";
reg = <0x03001000 0x1000>,
<0x05027000 0x1000>;
reg-names = "sys", "rtc";
uart0_cfg: uart0-cfg {
uart0-pins {
pinmux = <PINMUX(PIN_UART0_TX, 0)>,
<PINMUX(PIN_UART0_RX, 0)>;
bias-pull-up;
drive-strength-microamp = <10800>;
input-schmitt-microvolt = <0>;
power-source = <3300>;
slew-rate = <0>;
};
};
};
...
|
