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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/net/lantiq,pef2256.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Lantiq PEF22568 9maintainers:10 - Herve Codina <herve.codina@bootlin.com>11 12description:13 The Lantiq PEF2256, also known as Infineon PEF2256 or FALC56, is a framer and14 line interface component designed to fulfill all required interfacing between15 an analog E1/T1/J1 line and the digital PCM system highway/H.100 bus.16 17properties:18 compatible:19 items:20 - const: lantiq,pef225621 22 reg:23 maxItems: 124 25 clocks:26 items:27 - description: Master Clock28 - description: System Clock Receive29 - description: System Clock Transmit30 31 clock-names:32 items:33 - const: mclk34 - const: sclkr35 - const: sclkx36 37 interrupts:38 maxItems: 139 40 reset-gpios:41 description:42 GPIO used to reset the device.43 maxItems: 144 45 pinctrl:46 $ref: /schemas/pinctrl/pinctrl.yaml#47 additionalProperties: false48 49 patternProperties:50 '-pins$':51 type: object52 $ref: /schemas/pinctrl/pinmux-node.yaml#53 additionalProperties: false54 55 properties:56 pins:57 enum: [ RPA, RPB, RPC, RPD, XPA, XPB, XPC, XPD ]58 59 function:60 enum: [ SYPR, RFM, RFMB, RSIGM, RSIG, DLR, FREEZE, RFSP, LOS,61 SYPX, XFMS, XSIG, TCLK, XMFB, XSIGM, DLX, XCLK, XLT,62 GPI, GPOH, GPOL ]63 64 required:65 - pins66 - function67 68 lantiq,data-rate-bps:69 enum: [2048000, 4096000, 8192000, 16384000]70 default: 204800071 description:72 Data rate (bit per seconds) on the system highway.73 74 lantiq,clock-falling-edge:75 $ref: /schemas/types.yaml#/definitions/flag76 description:77 Data is sent on falling edge of the clock (and received on the rising78 edge). If 'clock-falling-edge' is not present, data is sent on the79 rising edge (and received on the falling edge).80 81 lantiq,channel-phase:82 $ref: /schemas/types.yaml#/definitions/uint3283 enum: [0, 1, 2, 3, 4, 5, 6, 7]84 default: 085 description: |86 The pef2256 delivers a full frame (32 8-bit time-slots in E1 and 24 8-bit87 time-slots 8 8-bit signaling in E1/J1) every 125us. This lead to a data88 rate of 2048000 bit/s. When lantiq,data-rate-bps is more than 204800089 bit/s, the data (all 32 8-bit) present in the frame are interleave with90 unused time-slots. The lantiq,channel-phase property allows to set the91 correct alignment of the interleave mechanism.92 For instance, suppose lantiq,data-rate-bps = 8192000 (ie 4*2048000), and93 lantiq,channel-phase = 2, the interleave schema with unused time-slots94 (nu) and used time-slots (XX) for TSi is95 nu nu XX nu nu nu XX nu nu nu XX nu96 <-- TSi --> <- TSi+1 -> <- TSi+2 ->97 With lantiq,data-rate-bps = 8192000, and lantiq,channel-phase = 1, the98 interleave schema is99 nu XX nu nu nu XX nu nu nu XX nu nu100 <-- TSi --> <- TSi+1 -> <- TSi+2 ->101 With lantiq,data-rate-bps = 4096000 (ie 2*2048000), and102 lantiq,channel-phase = 1, the interleave schema is103 nu XX nu XX nu XX104 <-- TSi --> <- TSi+1 -> <- TSi+2 ->105 106patternProperties:107 '^codec(-([0-9]|[1-2][0-9]|3[0-1]))?$':108 type: object109 $ref: /schemas/sound/dai-common.yaml110 unevaluatedProperties: false111 description:112 Codec provided by the pef2256. This codec allows to use some of the PCM113 system highway time-slots as audio channels to transport audio data over114 the E1/T1/J1 lines.115 The time-slots used by the codec must be set and so, the properties116 'dai-tdm-slot-num', 'dai-tdm-slot-width', 'dai-tdm-slot-tx-mask' and117 'dai-tdm-slot-rx-mask' must be present in the sound card node for118 sub-nodes that involve the codec. The codec uses 8-bit time-slots.119 'dai-tdm-tdm-slot-with' must be set to 8.120 The tx and rx masks define the pef2256 time-slots assigned to the codec.121 122 properties:123 compatible:124 const: lantiq,pef2256-codec125 126 '#sound-dai-cells':127 const: 0128 129 required:130 - compatible131 - '#sound-dai-cells'132 133required:134 - compatible135 - reg136 - clocks137 - clock-names138 - interrupts139 140additionalProperties: false141 142examples:143 - |144 #include <dt-bindings/gpio/gpio.h>145 #include <dt-bindings/interrupt-controller/irq.h>146 147 pef2256: framer@2000000 {148 compatible = "lantiq,pef2256";149 reg = <0x2000000 0x100>;150 interrupts = <8 IRQ_TYPE_LEVEL_LOW>;151 interrupt-parent = <&intc>;152 clocks = <&clk_mclk>, <&clk_sclkr>, <&clk_sclkx>;153 clock-names = "mclk", "sclkr", "sclkx";154 reset-gpios = <&gpio 11 GPIO_ACTIVE_LOW>;155 lantiq,data-rate-bps = <4096000>;156 157 pinctrl {158 pef2256_rpa_sypr: rpa-pins {159 pins = "RPA";160 function = "SYPR";161 };162 pef2256_xpa_sypx: xpa-pins {163 pins = "XPA";164 function = "SYPX";165 };166 };167 168 pef2256_codec0: codec-0 {169 compatible = "lantiq,pef2256-codec";170 #sound-dai-cells = <0>;171 sound-name-prefix = "PEF2256_0";172 };173 174 pef2256_codec1: codec-1 {175 compatible = "lantiq,pef2256-codec";176 #sound-dai-cells = <0>;177 sound-name-prefix = "PEF2256_1";178 };179 };180 181 sound {182 compatible = "simple-audio-card";183 #address-cells = <1>;184 #size-cells = <0>;185 simple-audio-card,dai-link@0 { /* CPU DAI1 - pef2256 codec 1 */186 reg = <0>;187 cpu {188 sound-dai = <&cpu_dai1>;189 };190 codec {191 sound-dai = <&pef2256_codec0>;192 dai-tdm-slot-num = <4>;193 dai-tdm-slot-width = <8>;194 /* TS 1, 2, 3, 4 */195 dai-tdm-slot-tx-mask = <0 1 1 1 1>;196 dai-tdm-slot-rx-mask = <0 1 1 1 1>;197 };198 };199 simple-audio-card,dai-link@1 { /* CPU DAI2 - pef2256 codec 2 */200 reg = <1>;201 cpu {202 sound-dai = <&cpu_dai2>;203 };204 codec {205 sound-dai = <&pef2256_codec1>;206 dai-tdm-slot-num = <4>;207 dai-tdm-slot-width = <8>;208 /* TS 5, 6, 7, 8 */209 dai-tdm-slot-tx-mask = <0 0 0 0 0 1 1 1 1>;210 dai-tdm-slot-rx-mask = <0 0 0 0 0 1 1 1 1>;211 };212 };213 };214