Files
linux/Documentation/devicetree/bindings/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml
Linus Walleij 54de247a0e dt-bindings: Updates Linus Walleij's mail address
My name is stamped into maintainership for a big slew of DT
bindings. Now that it is changing, switch it over to my
kernel.org mail address, which will hopefully be stable for the
rest of my life.

Signed-off-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20251216-maintainers-dt-v1-1-0b5ab102c9bb@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2025-12-16 10:17:59 -06:00

81 lines
2.6 KiB
YAML

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/memory-controllers/intel,ixp4xx-expansion-peripheral-props.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Peripheral properties for Intel IXP4xx Expansion Bus
description:
The IXP4xx expansion bus controller handles access to devices on the
memory-mapped expansion bus on the Intel IXP4xx family of system on chips,
including IXP42x, IXP43x, IXP45x and IXP46x.
maintainers:
- Linus Walleij <linusw@kernel.org>
properties:
intel,ixp4xx-eb-t1:
description: Address timing, extend address phase with n cycles.
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 3
intel,ixp4xx-eb-t2:
description: Setup chip select timing, extend setup phase with n cycles.
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 3
intel,ixp4xx-eb-t3:
description: Strobe timing, extend strobe phase with n cycles.
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 15
intel,ixp4xx-eb-t4:
description: Hold timing, extend hold phase with n cycles.
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 3
intel,ixp4xx-eb-t5:
description: Recovery timing, extend recovery phase with n cycles.
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 15
intel,ixp4xx-eb-cycle-type:
description: The type of cycles to use on the expansion bus for this
chip select. 0 = Intel cycles, 1 = Motorola cycles, 2 = HPI cycles.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1, 2]
intel,ixp4xx-eb-byte-access-on-halfword:
description: Allow byte read access on half word devices.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
intel,ixp4xx-eb-hpi-hrdy-pol-high:
description: Set HPI HRDY polarity to active high when using HPI.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
intel,ixp4xx-eb-mux-address-and-data:
description: Multiplex address and data on the data bus.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
intel,ixp4xx-eb-ahb-split-transfers:
description: Enable AHB split transfers.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
intel,ixp4xx-eb-write-enable:
description: Enable write cycles.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
intel,ixp4xx-eb-byte-access:
description: Expansion bus uses only 8 bits. The default is to use
16 bits.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
additionalProperties: true