1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 # Copyright (c) 2020, Silicon Laboratories, Inc.
6 $id: http://devicetree.org/schemas/net/wireless/silabs,wfx.yaml#
7 $schema: http://devicetree.org/meta-schemas/core.yaml#
9 title: Silicon Labs WFxxx devicetree bindings
12 - Jérôme Pouiller <jerome.pouiller@silabs.com>
15 Support for the Wifi chip WFxxx from Silicon Labs. Currently, the only device
16 from the WFxxx series is the WF200 described here:
17 https://www.silabs.com/documents/public/data-sheets/wf200-datasheet.pdf
19 The WF200 can be connected via SPI or via SDIO.
23 Declaring the WFxxx chip in device tree is mandatory (usually, the VID/PID is
24 sufficient for the SDIO devices).
26 It is recommended to declare a mmc-pwrseq on SDIO host above WFx. Without
27 it, you may encounter issues during reboot. The mmc-pwrseq should be
28 compatible with mmc-pwrseq-simple. Please consult
29 Documentation/devicetree/bindings/mmc/mmc-pwrseq-simple.yaml for more
34 In add of the properties below, please consult
35 Documentation/devicetree/bindings/spi/spi-controller.yaml for optional SPI
42 - silabs,brd4001a # WGM160P Evaluation Board
43 - silabs,brd8022a # WF200 Evaluation Board
44 - silabs,brd8023a # WFM200 Evaluation Board
45 - const: silabs,wf200 # Chip alone without antenna
49 When used on SDIO bus, <reg> must be set to 1. When used on SPI bus, it is
50 the chip select address of the device as defined in the SPI devices
54 spi-max-frequency: true
57 description: The interrupt line. Should be IRQ_TYPE_EDGE_RISING. When SPI is
58 used, this property is required. When SDIO is used, the "in-band"
59 interrupt provided by the SDIO bus is used unless an interrupt is defined
64 description: (SPI only) Phandle of gpio that will be used to reset chip
65 during probe. Without this property, you may encounter issues with warm
68 For SDIO, the reset gpio should declared using a mmc-pwrseq.
72 description: Phandle of gpio that will be used to wake-up chip. Without this
73 property, driver will disable most of power saving features.
76 silabs,antenna-config-file:
77 $ref: /schemas/types.yaml#/definitions/string
78 description: Use an alternative file for antenna configuration (aka
79 "Platform Data Set" in Silabs jargon). Default depends of "compatible"
80 string. For "silabs,wf200", the default is 'wf200.pds'.
82 local-mac-address: true
86 additionalProperties: false
94 #include <dt-bindings/gpio/gpio.h>
95 #include <dt-bindings/interrupt-controller/irq.h>
102 compatible = "silabs,brd8022a", "silabs,wf200";
103 pinctrl-names = "default";
104 pinctrl-0 = <&wfx_irq &wfx_gpios>;
106 interrupts-extended = <&gpio 16 IRQ_TYPE_EDGE_RISING>;
107 wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
108 reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
109 spi-max-frequency = <42000000>;
114 #include <dt-bindings/gpio/gpio.h>
115 #include <dt-bindings/interrupt-controller/irq.h>
117 wfx_pwrseq: wfx_pwrseq {
118 compatible = "mmc-pwrseq-simple";
119 pinctrl-names = "default";
120 pinctrl-0 = <&wfx_reset>;
121 reset-gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
125 mmc-pwrseq = <&wfx_pwrseq>;
126 #address-cells = <1>;
130 compatible = "silabs,brd8022a", "silabs,wf200";
131 pinctrl-names = "default";
132 pinctrl-0 = <&wfx_wakeup>;
134 wakeup-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;