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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/fsl/cpm_qe/fsl,ucc-hdlc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: High-Level Data Link Control(HDLC)
description: HDLC part in Universal communication controllers (UCCs)
maintainers:
- Frank Li <Frank.Li@nxp.com>
properties:
compatible:
const: fsl,ucc-hdlc
reg:
maxItems: 1
interrupts:
maxItems: 1
cell-index:
$ref: /schemas/types.yaml#/definitions/uint32
rx-clock-name:
$ref: /schemas/types.yaml#/definitions/string
oneOf:
- pattern: "^brg([0-9]|1[0-6])$"
- pattern: "^clk([0-9]|1[0-9]|2[0-4])$"
tx-clock-name:
$ref: /schemas/types.yaml#/definitions/string
oneOf:
- pattern: "^brg([0-9]|1[0-6])$"
- pattern: "^clk([0-9]|1[0-9]|2[0-4])$"
fsl,tdm-interface:
$ref: /schemas/types.yaml#/definitions/flag
description: Specify that hdlc is based on tdm-interface
fsl,rx-sync-clock:
$ref: /schemas/types.yaml#/definitions/string
description: rx-sync
enum:
- none
- rsync_pin
- brg9
- brg10
- brg11
- brg13
- brg14
- brg15
fsl,tx-sync-clock:
$ref: /schemas/types.yaml#/definitions/string
description: tx-sync
enum:
- none
- tsync_pin
- brg9
- brg10
- brg11
- brg13
- brg14
- brg15
fsl,tdm-framer-type:
$ref: /schemas/types.yaml#/definitions/string
description: required for tdm interface
enum: [e1, t1]
fsl,tdm-id:
$ref: /schemas/types.yaml#/definitions/uint32
description: number of TDM ID
fsl,tx-timeslot-mask:
$ref: /schemas/types.yaml#/definitions/uint32
description:
required for tdm interface.
time slot mask for TDM operation. Indicates which time
slots used for transmitting and receiving.
fsl,rx-timeslot-mask:
$ref: /schemas/types.yaml#/definitions/uint32
description:
required for tdm interface.
time slot mask for TDM operation. Indicates which time
slots used for transmitting and receiving.
fsl,siram-entry-id:
$ref: /schemas/types.yaml#/definitions/uint32
description:
required for tdm interface
Must be 0,2,4...64. the number of TDM entry.
fsl,tdm-internal-loopback:
$ref: /schemas/types.yaml#/definitions/flag
description:
optional for tdm interface
Internal loopback connecting on TDM layer.
fsl,hmask:
$ref: /schemas/types.yaml#/definitions/uint16
description: |
HDLC address recognition. Set to zero to disable
address filtering of packets:
fsl,hmask = /bits/ 16 <0x0000>;
required:
- compatible
- reg
additionalProperties: false
examples:
- |
communication@2000 {
compatible = "fsl,ucc-hdlc";
reg = <0x2000 0x200>;
rx-clock-name = "clk8";
tx-clock-name = "clk9";
fsl,rx-sync-clock = "rsync_pin";
fsl,tx-sync-clock = "tsync_pin";
fsl,tx-timeslot-mask = <0xfffffffe>;
fsl,rx-timeslot-mask = <0xfffffffe>;
fsl,tdm-framer-type = "e1";
fsl,tdm-id = <0>;
fsl,siram-entry-id = <0>;
fsl,tdm-interface;
};
- |
communication@2000 {
compatible = "fsl,ucc-hdlc";
reg = <0x2000 0x200>;
rx-clock-name = "brg1";
tx-clock-name = "brg1";
};
|
