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