dts: bindings: wifi: Add nRF70 Wi-Fi support

Add necessary bindings for the nRF70 Wi-Fi chips from Nordic
semiconductors ASA.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>

dts/bindings/wifi/nordic,nrf70-coex.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: |
+  This is a representation of an external radio coexistence setup for coexistence
+  with nRF70 WiFi chips.
+
+properties:
+  req-gpios:
+    type: phandle-array
+    description: |
+      GPIO of the SOC connected to the PTA's REQUEST pin.
+
+  status0-gpios:
+    type: phandle-array
+    description: |
+      GPIO of the SOC connected to the PTA's PRIORITY pin.
+      This GPIO is also used to indicate direction (TX/RX).
+
+  grant-gpios:
+    type: phandle-array
+    description: |
+      GPIO of the SOC connected to the PTA's GRANT pin.
+
+  swctrl1-gpios:
+    type: phandle-array
+    description: |
+      GPIO of the SOC controlling the Priority (STATUS1) pin (in 4-wire
+      coex case) of the nRF7002
+
+  srrf-switch-gpios:
+    type: phandle-array
+    description: |
+      GPIO of the RF Switch to control SR RF output to either SR Antenna
+      or shared Antenna with Wi-Fi

dts/bindings/wifi/nordic,nrf70-qspi.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF70 Wi-Fi chip.
+
+include: ["nordic,nrf70.yaml", "base.yaml"]
+
+on-bus: qspi
+
+properties:
+  qspi-frequency:
+    type: int
+    required: true
+    description: |
+      Maximum clock speed (in Hz) supported by the device.
+
+  reg:
+    required: true
+
+  qspi-quad-mode:
+    type: boolean
+    description: |
+      If specified, Use QSPI in quad mode (4 IO lines) otherwise in
+      SPI mode (2 IO lines - MOSI & MISO).
+
+  qspi-rx-delay:
+    type: int
+    default: 0
+    description: |
+      Number of clock cycles from the rising edge of the SPI clock
+      until the input serial data is sampled.
+
+  qspi-cpha:
+    type: boolean
+    description: |
+      Set to indicate phase starts with asserted half-phase (CPHA=1).
+      The driver using this property must also use `cpol`.
+
+  qspi-cpol:
+    type: boolean
+    description: |
+      Set to indicate that the clock leading edge is falling (CPOL=1).
+      The driver using this property requires also use `cpha`.

dts/bindings/wifi/nordic,nrf70-spi.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF70 Wi-Fi chip.
+
+include: ["nordic,nrf70.yaml", "spi-device.yaml"]

dts/bindings/wifi/nordic,nrf70.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+# GPIO lines for controlling the nRF70 Series Wi-Fi chip.
+include: nordic,nrf70-coex.yaml
+
+properties:
+  iovdd-ctrl-gpios:
+    type: phandle-array
+    required: true
+    description: GPIO of the SoC controlling IO_VDD Control pin of the nRF70
+
+  bucken-gpios:
+    type: phandle-array
+    required: true
+    description: GPIO of the SoC controlling BUCK_EN pin of the nRF70
+
+  host-irq-gpios:
+    type: phandle-array
+    required: true
+    description: GPIO of the SoC controlling the HOST_IRQ pin of the nRF70

dts/bindings/wifi/nordic,nrf7000-qspi.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF7002 Wi-Fi chip with QSPI interface.
+
+compatible: nordic,nrf7000-qspi
+
+include:
+  - "nordic,nrf70-qspi.yaml"
+  - "wifi-tx-power-2g.yaml"
+  - "wifi-tx-power-5g.yaml"

dts/bindings/wifi/nordic,nrf7000-spi.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF7002 Wi-Fi chip with SPI interface.
+
+compatible: nordic,nrf7000-spi
+
+include:
+  - "nordic,nrf70-spi.yaml"
+  - "wifi-tx-power-2g.yaml"
+  - "wifi-tx-power-5g.yaml"

dts/bindings/wifi/nordic,nrf7001-qspi.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF7002 Wi-Fi chip with QSPI interface.
+
+compatible: nordic,nrf7001-qspi
+
+include:
+  - "nordic,nrf70-qspi.yaml"
+  - "wifi-tx-power-2g.yaml"

dts/bindings/wifi/nordic,nrf7001-spi.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF7002 Wi-Fi chip with SPI interface.
+
+compatible: nordic,nrf7001-spi
+
+include:
+  - "nordic,nrf70-spi.yaml"
+  - "wifi-tx-power-2g.yaml"

dts/bindings/wifi/nordic,nrf7002-qspi.yaml

@@ -0,0 +1,11 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF7002 Wi-Fi chip with QSPI interface.
+
+compatible: nordic,nrf7002-qspi
+
+include:
+  - "nordic,nrf70-qspi.yaml"
+  - "wifi-tx-power-2g.yaml"
+  - "wifi-tx-power-5g.yaml"

dts/bindings/wifi/nordic,nrf7002-spi.yaml

@@ -0,0 +1,11 @@
+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: This is a representation of the nRF7002 Wi-Fi chip with SPI interface.
+
+compatible: nordic,nrf7002-spi
+
+include:
+  - "nordic,nrf70-spi.yaml"
+  - "wifi-tx-power-2g.yaml"
+  - "wifi-tx-power-5g.yaml"

dts/bindings/wifi/wifi-tx-power-2g.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: |
+  This is a representation of the Wi-Fi transmit power ceilings
+  i.e., maximum transmit power allowed for 2.4GHz band. Based on the
+  RF performance of the device, the transmit power can be limited
+  for different data rates and sub-bands to get the best performance.
+  Resolution is 1 dBm
+
+properties:
+  wifi-max-tx-pwr-2g-dsss:
+    type: int
+    required: true
+    description: Maximum transmit power allowed in 2.4GHz band for DSSS/CCK rates
+  wifi-max-tx-pwr-2g-mcs0:
+    type: int
+    required: true
+    description: Maximum transmit power allowed in 2.4GHz band for MCS0
+  wifi-max-tx-pwr-2g-mcs7:
+    type: int
+    required: true
+    description: Maximum transmit power allowed in 2.4GHz band for MCS7

dts/bindings/wifi/wifi-tx-power-5g.yaml

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+# Copyright (c) 2024 Nordic Semiconductor ASA
+# SPDX-License-Identifier: Apache-2.0
+
+description: |
+  This is a representation of the Wi-Fi transmit power ceilings
+  i.e., maximum transmit power allowed for 5GHz band. Based on the
+  RF performance of the device, the transmit power can be limited
+  for different data rates and sub-bands to get the best performance.
+
+  low sub-band: Channels 36-64
+  mid sub-band: Channels 96-132
+  high sub-band: Channels 136-177
+
+  Resolution is 1 dBm
+
+properties:
+  wifi-max-tx-pwr-5g-low-mcs0:
+    required: true
+    type: int
+    description: Maximum transmit power allowed in 5GHz band MCS0 low sub-band
+  wifi-max-tx-pwr-5g-low-mcs7:
+    required: true
+    type: int
+    description: Maximum transmit power allowed in 5GHz band MCS7 low sub-band
+  wifi-max-tx-pwr-5g-mid-mcs0:
+    required: true
+    type: int
+    description: Maximum transmit power allowed in 5GHz band MCS0 mid sub-band
+  wifi-max-tx-pwr-5g-mid-mcs7:
+    required: true
+    type: int
+    description: Maximum transmit power allowed in 5GHz band MCS7 mid sub-band
+  wifi-max-tx-pwr-5g-high-mcs0:
+    required: true
+    type: int
+    description: Maximum transmit power allowed in 5GHz band MCS0 high sub-band
+  wifi-max-tx-pwr-5g-high-mcs7:
+    type: int
+    description: Maximum transmit power allowed in 5GHz band MCS7 high sub-band