# 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 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