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|
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/brcm,ns-pinmux.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Broadcom Northstar pins mux controller
maintainers:
- Rafał Miłecki <rafal@milecki.pl>
description:
Some of Northstar SoCs's pins can be used for various purposes thanks to the
mux controller. This binding allows describing mux controller and listing
available functions. They can be referenced later by other bindings to let
system configure controller correctly.
A list of pins varies across chipsets so few bindings are available.
properties:
compatible:
enum:
- brcm,bcm4708-pinmux
- brcm,bcm4709-pinmux
- brcm,bcm53012-pinmux
reg:
maxItems: 1
reg-names:
const: cru_gpio_control
patternProperties:
'-pins$':
type: object
description: pin node
$ref: pinmux-node.yaml#
properties:
function:
enum: [ spi, i2c, pwm, uart1, mdio, uart2, sdio ]
groups:
minItems: 1
maxItems: 4
items:
enum: [ spi_grp, i2c_grp, pwm0_grp, pwm1_grp, pwm2_grp, pwm3_grp,
uart1_grp, mdio_grp, uart2_grp, sdio_pwr_grp, sdio_1p8v_grp ]
required:
- function
- groups
additionalProperties: false
allOf:
- if:
properties:
compatible:
contains:
const: brcm,bcm4708-pinmux
then:
patternProperties:
'-pins$':
properties:
function:
enum: [ spi, i2c, pwm, uart1 ]
groups:
items:
enum: [ spi_grp, i2c_grp, pwm0_grp, pwm1_grp, pwm2_grp, pwm3_grp,
uart1_grp ]
required:
- reg
- reg-names
additionalProperties: false
examples:
- |
pin-controller@1800c1c0 {
compatible = "brcm,bcm4708-pinmux";
reg = <0x1800c1c0 0x24>;
reg-names = "cru_gpio_control";
spi-pins {
function = "spi";
groups = "spi_grp";
};
};
|
