# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/net/lantiq,pef2256.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Lantiq PEF2256 maintainers: - Herve Codina description: The Lantiq PEF2256, also known as Infineon PEF2256 or FALC56, is a framer and line interface component designed to fulfill all required interfacing between an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus. properties: compatible: items: - const: lantiq,pef2256 reg: maxItems: 1 clocks: items: - description: Master Clock - description: System Clock Receive - description: System Clock Transmit clock-names: items: - const: mclk - const: sclkr - const: sclkx interrupts: maxItems: 1 reset-gpios: description: GPIO used to reset the device. maxItems: 1 pinctrl: $ref: /schemas/pinctrl/pinctrl.yaml# additionalProperties: false patternProperties: '-pins$': type: object $ref: /schemas/pinctrl/pinmux-node.yaml# additionalProperties: false properties: pins: enum: [ RPA, RPB, RPC, RPD, XPA, XPB, XPC, XPD ] function: enum: [ SYPR, RFM, RFMB, RSIGM, RSIG, DLR, FREEZE, RFSP, LOS, SYPX, XFMS, XSIG, TCLK, XMFB, XSIGM, DLX, XCLK, XLT, GPI, GPOH, GPOL ] required: - pins - function lantiq,data-rate-bps: enum: [2048000, 4096000, 8192000, 16384000] default: 2048000 description: Data rate (bit per seconds) on the system highway. lantiq,clock-falling-edge: $ref: /schemas/types.yaml#/definitions/flag description: Data is sent on falling edge of the clock (and received on the rising edge). If 'clock-falling-edge' is not present, data is sent on the rising edge (and received on the falling edge). lantiq,channel-phase: $ref: /schemas/types.yaml#/definitions/uint32 enum: [0, 1, 2, 3, 4, 5, 6, 7] default: 0 description: | The pef2256 delivers a full frame (32 8-bit time-slots in E1 and 24 8-bit time-slots 8 8-bit signaling in E1/J1) every 125us. This lead to a data rate of 2048000 bit/s. When lantiq,data-rate-bps is more than 2048000 bit/s, the data (all 32 8-bit) present in the frame are interleave with unused time-slots. The lantiq,channel-phase property allows to set the correct alignment of the interleave mechanism. For instance, suppose lantiq,data-rate-bps = 8192000 (ie 4*2048000), and lantiq,channel-phase = 2, the interleave schema with unused time-slots (nu) and used time-slots (XX) for TSi is nu nu XX nu nu nu XX nu nu nu XX nu <-- TSi --> <- TSi+1 -> <- TSi+2 -> With lantiq,data-rate-bps = 8192000, and lantiq,channel-phase = 1, the interleave schema is nu XX nu nu nu XX nu nu nu XX nu nu <-- TSi --> <- TSi+1 -> <- TSi+2 -> With lantiq,data-rate-bps = 4096000 (ie 2*2048000), and lantiq,channel-phase = 1, the interleave schema is nu XX nu XX nu XX <-- TSi --> <- TSi+1 -> <- TSi+2 -> patternProperties: '^codec(-([0-9]|[1-2][0-9]|3[0-1]))?$': type: object $ref: /schemas/sound/dai-common.yaml unevaluatedProperties: false description: Codec provided by the pef2256. This codec allows to use some of the PCM system highway time-slots as audio channels to transport audio data over the E1/T1/J1 lines. The time-slots used by the codec must be set and so, the properties 'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and 'dai-tdm-slot-rx-mask' must be present in the sound card node for sub-nodes that involve the codec. The codec uses 8-bit time-slots. 'dai-tdm-tdm-slot-with' must be set to 8. The tx and rx masks define the pef2256 time-slots assigned to the codec. properties: compatible: const: lantiq,pef2256-codec '#sound-dai-cells': const: 0 required: - compatible - '#sound-dai-cells' required: - compatible - reg - clocks - clock-names - interrupts additionalProperties: false examples: - | #include #include pef2256: framer@2000000 { compatible = "lantiq,pef2256"; reg = <0x2000000 0x100>; interrupts = <8 IRQ_TYPE_LEVEL_LOW>; interrupt-parent = <&intc>; clocks = <&clk_mclk>, <&clk_sclkr>, <&clk_sclkx>; clock-names = "mclk", "sclkr", "sclkx"; reset-gpios = <&gpio 11 GPIO_ACTIVE_LOW>; lantiq,data-rate-bps = <4096000>; pinctrl { pef2256_rpa_sypr: rpa-pins { pins = "RPA"; function = "SYPR"; }; pef2256_xpa_sypx: xpa-pins { pins = "XPA"; function = "SYPX"; }; }; pef2256_codec0: codec-0 { compatible = "lantiq,pef2256-codec"; #sound-dai-cells = <0>; sound-name-prefix = "PEF2256_0"; }; pef2256_codec1: codec-1 { compatible = "lantiq,pef2256-codec"; #sound-dai-cells = <0>; sound-name-prefix = "PEF2256_1"; }; }; sound { compatible = "simple-audio-card"; #address-cells = <1>; #size-cells = <0>; simple-audio-card,dai-link@0 { /* CPU DAI1 - pef2256 codec 1 */ reg = <0>; cpu { sound-dai = <&cpu_dai1>; }; codec { sound-dai = <&pef2256_codec0>; dai-tdm-slot-num = <4>; dai-tdm-slot-width = <8>; /* TS 1, 2, 3, 4 */ dai-tdm-slot-tx-mask = <0 1 1 1 1>; dai-tdm-slot-rx-mask = <0 1 1 1 1>; }; }; simple-audio-card,dai-link@1 { /* CPU DAI2 - pef2256 codec 2 */ reg = <1>; cpu { sound-dai = <&cpu_dai2>; }; codec { sound-dai = <&pef2256_codec1>; dai-tdm-slot-num = <4>; dai-tdm-slot-width = <8>; /* TS 5, 6, 7, 8 */ dai-tdm-slot-tx-mask = <0 0 0 0 0 1 1 1 1>; dai-tdm-slot-rx-mask = <0 0 0 0 0 1 1 1 1>; }; }; };