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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/aspeed,ast2700-soc0-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ASPEED AST2700 SoC0 Pin Controller
maintainers:
- Billy Tsai <billy_tsai@aspeedtech.com>
description: >
The AST2700 features a dual-SoC architecture with two interconnected SoCs,
each having its own System Control Unit (SCU) for independent pin control.
This pin controller manages the pin multiplexing for SoC0.
The SoC0 pin controller manages pin functions including eMMC, VGA DDC,
dual USB3/USB2 ports (A and B), JTAG, and PCIe root complex interfaces.
properties:
compatible:
const: aspeed,ast2700-soc0-pinctrl
reg:
maxItems: 1
patternProperties:
'-state$':
description: |
Pin control state.
If 'function' is present, the node describes a pinmux state and must
specify 'groups'.
For pin configuration, exactly one of 'groups' or 'pins' must be
specified in each state node. Group-level configuration applies to all
pins in the group. Pin-level configuration may be supplied in a
separate state node for individual pins; when both group-level and
pin-level configuration apply to the same pin, the pin-level
configuration takes precedence.
type: object
allOf:
- $ref: pinmux-node.yaml#
- $ref: pincfg-node.yaml#
- if:
required:
- function
then:
required:
- groups
- oneOf:
- required:
- groups
- required:
- pins
additionalProperties: false
properties:
function:
enum:
- EMMC
- JTAGDDR
- JTAGM0
- JTAGPCIEA
- JTAGPCIEB
- JTAGPSP
- JTAGSSP
- JTAGTSP
- JTAGUSB3A
- JTAGUSB3B
- PCIERC0PERST
- PCIERC1PERST
- TSPRSTN
- UFSCLKI
- USB2AD0
- USB2AD1
- USB2AH
- USB2AHP
- USB2AHPD0
- USB2AXH
- USB2AXH2B
- USB2AXHD1
- USB2AXHP
- USB2AXHP2B
- USB2AXHPD1
- USB2BD0
- USB2BD1
- USB2BH
- USB2BHP
- USB2BHPD0
- USB2BXH
- USB2BXH2A
- USB2BXHD1
- USB2BXHP
- USB2BXHP2A
- USB2BXHPD1
- USB3AXH
- USB3AXH2B
- USB3AXHD
- USB3AXHP
- USB3AXHP2B
- USB3AXHPD
- USB3BXH
- USB3BXH2A
- USB3BXHD
- USB3BXHP
- USB3BXHP2A
- USB3BXHPD
- VB
- VGADDC
groups:
enum:
- EMMCCDN
- EMMCG1
- EMMCG4
- EMMCG8
- EMMCWPN
- JTAG0
- PCIERC0PERST
- PCIERC1PERST
- TSPRSTN
- UFSCLKI
- USB2A
- USB2AAP
- USB2ABP
- USB2ADAP
- USB2AH
- USB2AHAP
- USB2B
- USB2BAP
- USB2BBP
- USB2BDBP
- USB2BH
- USB2BHBP
- USB3A
- USB3AAP
- USB3ABP
- USB3B
- USB3BAP
- USB3BBP
- VB0
- VB1
- VGADDC
pins:
enum:
- AB13
- AB14
- AC13
- AC14
- AD13
- AD14
- AE13
- AE14
- AE15
- AF13
- AF14
- AF15
drive-strength:
enum: [3, 6, 8, 11, 16, 18, 20, 23, 30, 32, 33, 35, 37, 38, 39, 41]
bias-disable: true
bias-pull-up: true
bias-pull-down: true
required:
- compatible
- reg
allOf:
- $ref: pinctrl.yaml#
additionalProperties: false
examples:
- |
pinctrl@400 {
compatible = "aspeed,ast2700-soc0-pinctrl";
reg = <0x400 0x318>;
emmc-state {
function = "EMMC";
groups = "EMMCG1";
};
};
|
