smsc,usb3503.yaml (2725B)
1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/usb/smsc,usb3503.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: SMSC USB3503 High-Speed Hub Controller Device Tree Bindings 8 9maintainers: 10 - Dongjin Kim <tobetter@gmail.com> 11 12properties: 13 compatible: 14 enum: 15 - smsc,usb3503 16 - smsc,usb3503a 17 18 reg: 19 maxItems: 1 20 21 connect-gpios: 22 maxItems: 1 23 description: > 24 GPIO for connect 25 26 intn-gpios: 27 maxItems: 1 28 description: > 29 GPIO for interrupt 30 31 reset-gpios: 32 maxItems: 1 33 description: > 34 GPIO for reset 35 36 disabled-ports: 37 $ref: /schemas/types.yaml#/definitions/uint32-array 38 minItems: 1 39 maxItems: 3 40 items: 41 minimum: 1 42 maximum: 3 43 description: > 44 Specifies the ports unused using their port number. Do not describe this 45 property if all ports have to be enabled. 46 47 initial-mode: 48 $ref: /schemas/types.yaml#/definitions/uint32 49 enum: [1, 2] 50 description: > 51 Specifies initial mode. 1 for Hub mode, 2 for standby mode. 52 53 clocks: 54 maxItems: 1 55 description: > 56 Clock used for driving REFCLK signal. If not provided the driver assumes 57 that clock signal is always available, its rate is specified by REF_SEL 58 pins and a value from the primary reference clock frequencies table is 59 used. 60 61 clock-names: 62 const: refclk 63 64 refclk-frequency: 65 $ref: /schemas/types.yaml#/definitions/uint32 66 description: > 67 Frequency of the REFCLK signal as defined by REF_SEL pins. If not 68 provided, driver will not set rate of the REFCLK signal and assume that a 69 value from the primary reference clock frequencies table is used. 70 71required: 72 - compatible 73 74additionalProperties: false 75 76examples: 77 - | 78 i2c { 79 #address-cells = <1>; 80 #size-cells = <0>; 81 82 usb-hub@8 { 83 compatible = "smsc,usb3503"; 84 reg = <0x08>; 85 connect-gpios = <&gpx3 0 1>; 86 disabled-ports = <2 3>; 87 intn-gpios = <&gpx3 4 1>; 88 reset-gpios = <&gpx3 5 1>; 89 initial-mode = <1>; 90 clocks = <&clks 80>; 91 clock-names = "refclk"; 92 }; 93 }; 94 95 - | 96 #include <dt-bindings/gpio/gpio.h> 97 98 usb-hub { 99 /* I2C is not connected */ 100 compatible = "smsc,usb3503"; 101 initial-mode = <1>; /* initialize in HUB mode */ 102 disabled-ports = <1>; 103 intn-gpios = <&pio 7 5 GPIO_ACTIVE_HIGH>; /* PH5 */ 104 reset-gpios = <&pio 4 16 GPIO_ACTIVE_LOW>; /* PE16 */ 105 connect-gpios = <&pio 4 17 GPIO_ACTIVE_HIGH>; /* PE17 */ 106 refclk-frequency = <19200000>; 107 }; 108 109...