Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.

%YAML 1.2
---
$id: http://devicetree.org/schemas/net/wireless/mediatek,mt76.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: MediaTek mt76 wireless devices Generic Binding

maintainers:
  - Felix Fietkau <nbd@nbd.name>
  - Lorenzo Bianconi <lorenzo@kernel.org>
  - Ryder Lee <ryder.lee@mediatek.com>

description: |
  This node provides properties for configuring the MediaTek mt76xx
  wireless device. The node is expected to be specified as a child
  node of the PCI controller to which the wireless chip is connected.
  Alternatively, it can specify the wireless part of the MT7628/MT7688
  or MT7622 SoC.

allOf:
  - $ref: ieee80211.yaml#

properties:
  compatible:
    enum:
      - mediatek,mt76
      - mediatek,mt7628-wmac
      - mediatek,mt7622-wmac

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  power-domains:
    maxItems: 1

  mediatek,infracfg:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      Phandle to the infrastructure bus fabric syscon node.
      This property is MT7622 specific

  ieee80211-freq-limit: true

  mediatek,eeprom-data:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    description:
      EEPROM data embedded as array.

  mediatek,mtd-eeprom:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    description:
      Phandle to a MTD partition + offset containing EEPROM data

  big-endian:
    $ref: /schemas/types.yaml#/definitions/flag
    description:
      Specify if the radio eeprom partition is written in big-endian

  mediatek,eeprom-merge-otp:
    type: boolean
    description:
      Merge EEPROM data with OTP data. Can be used on boards where the flash
      calibration data is generic and specific calibration data should be
      pulled from the OTP ROM

  led:
    type: object
    $ref: /schemas/leds/common.yaml#
    additionalProperties: false
    properties:
      led-sources:
        maxItems: 1

  power-limits:
    type: object
    additionalProperties: false
    patternProperties:
      "^r[0-9]+":
        type: object
        additionalProperties: false
        properties:
          regdomain:
            $ref: /schemas/types.yaml#/definitions/string
            description:
              Regdomain refers to a legal regulatory region. Different
              countries define different levels of allowable transmitter
              power, time that a channel can be occupied, and different
              available channels
            enum:
              - FCC
              - ETSI
              - JP

        patternProperties:
          "^txpower-[256]g$":
            type: object
            additionalProperties: false
            patternProperties:
              "^b[0-9]+$":
                type: object
                additionalProperties: false
                properties:
                  channels:
                    $ref: /schemas/types.yaml#/definitions/uint32-array
                    minItems: 2
                    maxItems: 2
                    description:
                      Pairs of first and last channel number of the selected
                      band

                  rates-cck:
                    $ref: /schemas/types.yaml#/definitions/uint8-array
                    minItems: 4
                    maxItems: 4
                    description:
                      4 half-dBm per-rate power limit values

                  rates-ofdm:
                    $ref: /schemas/types.yaml#/definitions/uint8-array
                    minItems: 8
                    maxItems: 8
                    description:
                      8 half-dBm per-rate power limit values

                  rates-mcs:
                    $ref: /schemas/types.yaml#/definitions/uint8-matrix
                    description:
                      Sets of per-rate power limit values for 802.11n/802.11ac
                      rates for multiple channel bandwidth settings.
                      Each set starts with the number of channel bandwidth
                      settings for which the rate set applies, followed by
                      either 8 or 10 power limit values. The order of the
                      channel bandwidth settings is 20, 40, 80 and 160 MHz.
                    maxItems: 4
                    items:
                      minItems: 9
                      maxItems: 11

                  rates-ru:
                    $ref: /schemas/types.yaml#/definitions/uint8-matrix
                    description:
                      Sets of per-rate power limit values for 802.11ax rates
                      for multiple channel bandwidth or resource unit settings.
                      Each set starts with the number of channel bandwidth or
                      resource unit settings for which the rate set applies,
                      followed by 12 power limit values. The order of the
                      channel resource unit settings is RU26, RU52, RU106,
                      RU242/SU20, RU484/SU40, RU996/SU80 and RU2x996/SU160.
                    items:
                      minItems: 13
                      maxItems: 13

                  txs-delta:
                    $ref: /schemas/types.yaml#/definitions/uint32-array
                    description:
                      Half-dBm power delta for different numbers of antennas

required:
  - compatible
  - reg

additionalProperties: false

examples:
  - |
    pcie0 {
      #address-cells = <3>;
      #size-cells = <2>;
      wifi@0,0 {
        compatible = "mediatek,mt76";
        reg = <0x0000 0 0 0 0>;
        ieee80211-freq-limit = <5000000 6000000>;
        mediatek,mtd-eeprom = <&factory 0x8000>;
        big-endian;

        led {
          led-sources = <2>;
        };

        power-limits {
          r0 {
            regdomain = "FCC";
            txpower-5g {
               b0 {
                   channels = <36 48>;
                   rates-ofdm = /bits/ 8 <23 23 23 23 23 23 23 23>;
                   rates-mcs = /bits/ 8 <1 23 23 23 23 23 23 23 23 23 23>,
                               /bits/ 8 <3 22 22 22 22 22 22 22 22 22 22>;
                   rates-ru = /bits/ 8 <3 22 22 22 22 22 22 22 22 22 22 22 22>,
                              /bits/ 8 <4 20 20 20 20 20 20 20 20 20 20 20 20>;
               };
               b1 {
                   channels = <100 181>;
                   rates-ofdm = /bits/ 8 <14 14 14 14 14 14 14 14>;
                   rates-mcs = /bits/ 8  <4 14 14 14 14 14 14 14 14 14 14>;
                   txs-delta = <12 9 6>;
                   rates-ru = /bits/ 8  <7 14 14 14 14 14 14 14 14 14 14 14 14>;
               };
             };
          };
        };
      };
    };

  - |
    wifi@10300000 {
      compatible = "mediatek,mt7628-wmac";
      reg = <0x10300000 0x100000>;

      interrupt-parent = <&cpuintc>;
      interrupts = <6>;

      mediatek,mtd-eeprom = <&factory 0x0>;
    };

  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/interrupt-controller/irq.h>
    wifi@18000000 {
      compatible = "mediatek,mt7622-wmac";
      reg = <0x10300000 0x100000>;
      interrupts = <GIC_SPI 211 IRQ_TYPE_LEVEL_LOW>;

      mediatek,infracfg = <&infracfg>;

      power-domains = <&scpsys 3>;
    };