ac5f8197d1
Important: this change converts the binding as it is. It includes dependency on undocumented CRU that must be refactored. CRU must get documented and offset property has to be reworked. Above can (and will be) be handled once every CRU MFD subdevice gets documented properly (including the pinmux). Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210421182041.22636-1-zajec5@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
95 lines
2.2 KiB
YAML
95 lines
2.2 KiB
YAML
# 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.
|
|
|
|
Node of the pinmux must be nested in the CRU (Central Resource Unit) "syscon"
|
|
node.
|
|
|
|
properties:
|
|
compatible:
|
|
enum:
|
|
- brcm,bcm4708-pinmux
|
|
- brcm,bcm4709-pinmux
|
|
- brcm,bcm53012-pinmux
|
|
|
|
offset:
|
|
description: offset of pin registers in the CRU block
|
|
maxItems: 1
|
|
$ref: /schemas/types.yaml#/definitions/uint32-array
|
|
|
|
patternProperties:
|
|
'-pins$':
|
|
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:
|
|
- offset
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
cru@1800c100 {
|
|
compatible = "syscon", "simple-mfd";
|
|
reg = <0x1800c100 0x1a4>;
|
|
|
|
pinctrl {
|
|
compatible = "brcm,bcm4708-pinmux";
|
|
offset = <0xc0>;
|
|
|
|
spi-pins {
|
|
function = "spi";
|
|
groups = "spi_grp";
|
|
};
|
|
};
|
|
};
|