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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2021 Linaro Ltd.
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/intel,ixp4xx-hss.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Intel IXP4xx V.35 WAN High Speed Serial Link (HSS)
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
description: |
The Intel IXP4xx HSS makes use of the IXP4xx NPE (Network
Processing Engine) and the IXP4xx Queue Manager to process
V.35 Wideband Modem (WAN) links.
properties:
compatible:
const: intel,ixp4xx-hss
reg:
maxItems: 1
description: The HSS instance
intel,npe-handle:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
items:
- description: phandle to the NPE this HSS instance is using
- description: the NPE instance number
description: phandle to the NPE this HSS instance is using
and the instance to use in the second cell
intel,queue-chl-rxtrig:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: phandle to the RX trigger queue on the NPE
- description: the queue instance number
description: phandle to the RX trigger queue on the NPE
intel,queue-chl-txready:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: phandle to the TX ready queue on the NPE
- description: the queue instance number
description: phandle to the TX ready queue on the NPE
intel,queue-pkt-rx:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: phandle to the RX queue on the NPE
- description: the queue instance number
description: phandle to the packet RX queue on the NPE
intel,queue-pkt-tx:
$ref: /schemas/types.yaml#/definitions/phandle-array
maxItems: 4
items:
items:
- description: phandle to the TX queue on the NPE
- description: the queue instance number
description: phandle to the packet TX0, TX1, TX2 and TX3 queues on the NPE
intel,queue-pkt-rxfree:
$ref: /schemas/types.yaml#/definitions/phandle-array
maxItems: 4
items:
items:
- description: phandle to the RXFREE queue on the NPE
- description: the queue instance number
description: phandle to the packet RXFREE0, RXFREE1, RXFREE2 and
RXFREE3 queues on the NPE
intel,queue-pkt-txdone:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: phandle to the TXDONE queue on the NPE
- description: the queue instance number
description: phandle to the packet TXDONE queue on the NPE
cts-gpios:
maxItems: 1
description: Clear To Send (CTS) GPIO line
rts-gpios:
maxItems: 1
description: Ready To Send (RTS) GPIO line
dcd-gpios:
maxItems: 1
description: Data Carrier Detect (DCD) GPIO line
dtr-gpios:
maxItems: 1
description: Data Terminal Ready (DTR) GPIO line
clk-internal-gpios:
maxItems: 1
description: Clock internal GPIO line, driving this high will make the HSS
use internal clocking as opposed to external clocking
required:
- compatible
- reg
- intel,npe-handle
- intel,queue-chl-rxtrig
- intel,queue-chl-txready
- intel,queue-pkt-rx
- intel,queue-pkt-tx
- intel,queue-pkt-rxfree
- intel,queue-pkt-txdone
- cts-gpios
- rts-gpios
- dcd-gpios
- dtr-gpios
- clk-internal-gpios
additionalProperties: false
|
