1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/pinctrl/renesas,rzn1-pinctrl.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Renesas RZ/N1 Pin Controller 8 9maintainers: 10 - Fabrizio Castro <fabrizio.castro.jz@renesas.com> 11 - Geert Uytterhoeven <geert+renesas@glider.be> 12 13properties: 14 compatible: 15 items: 16 - enum: 17 - renesas,r9a06g032-pinctrl # RZ/N1D 18 - renesas,r9a06g033-pinctrl # RZ/N1S 19 - const: renesas,rzn1-pinctrl # Generic RZ/N1 20 21 reg: 22 items: 23 - description: GPIO Multiplexing Level1 Register Block 24 - description: GPIO Multiplexing Level2 Register Block 25 26 clocks: 27 maxItems: 1 28 29 clock-names: 30 const: bus 31 description: 32 The bus clock, sometimes described as pclk, for register accesses. 33 34allOf: 35 - $ref: pinctrl.yaml# 36 37required: 38 - compatible 39 - reg 40 - clocks 41 - clock-names 42 43additionalProperties: 44 anyOf: 45 - type: object 46 allOf: 47 - $ref: pincfg-node.yaml# 48 - $ref: pinmux-node.yaml# 49 50 description: 51 A pin multiplexing sub-node describes how to configure a set of (or a 52 single) pin in some desired alternate function mode. 53 A single sub-node may define several pin configurations. 54 55 properties: 56 pinmux: 57 description: | 58 Integer array representing pin number and pin multiplexing 59 configuration. 60 When a pin has to be configured in alternate function mode, use 61 this property to identify the pin by its global index, and provide 62 its alternate function configuration number along with it. 63 When multiple pins are required to be configured as part of the 64 same alternate function they shall be specified as members of the 65 same argument list of a single "pinmux" property. 66 Integers values in the "pinmux" argument list are assembled as: 67 (PIN | MUX_FUNC << 8) 68 where PIN directly corresponds to the pl_gpio pin number and 69 MUX_FUNC is one of the alternate function identifiers defined in: 70 <include/dt-bindings/pinctrl/rzn1-pinctrl.h> 71 These identifiers collapse the IO Multiplex Configuration Level 1 72 and Level 2 numbers that are detailed in the hardware reference 73 manual into a single number. The identifiers for Level 2 are simply 74 offset by 10. Additional identifiers are provided to specify the 75 MDIO source peripheral. 76 77 bias-disable: true 78 bias-pull-up: 79 description: Pull up the pin with 50 kOhm 80 bias-pull-down: 81 description: Pull down the pin with 50 kOhm 82 bias-high-impedance: true 83 drive-strength: 84 enum: [ 4, 6, 8, 12 ] 85 86 required: 87 - pinmux 88 89 additionalProperties: 90 $ref: "#/additionalProperties/anyOf/0" 91 92 - type: object 93 additionalProperties: 94 $ref: "#/additionalProperties/anyOf/0" 95 96examples: 97 - | 98 #include <dt-bindings/clock/r9a06g032-sysctrl.h> 99 #include <dt-bindings/pinctrl/rzn1-pinctrl.h> 100 pinctrl: pinctrl@40067000 { 101 compatible = "renesas,r9a06g032-pinctrl", "renesas,rzn1-pinctrl"; 102 reg = <0x40067000 0x1000>, <0x51000000 0x480>; 103 clocks = <&sysctrl R9A06G032_HCLK_PINCONFIG>; 104 clock-names = "bus"; 105 106 /* 107 * A serial communication interface with a TX output pin and an RX 108 * input pin. 109 */ 110 pins_uart0: pins_uart0 { 111 pinmux = < 112 RZN1_PINMUX(103, RZN1_FUNC_UART0_I) /* UART0_TXD */ 113 RZN1_PINMUX(104, RZN1_FUNC_UART0_I) /* UART0_RXD */ 114 >; 115 }; 116 117 /* 118 * Set the pull-up on the RXD pin of the UART. 119 */ 120 pins_uart0_alt: pins_uart0_alt { 121 pinmux = <RZN1_PINMUX(103, RZN1_FUNC_UART0_I)>; 122 123 pins_uart6_rx { 124 pinmux = <RZN1_PINMUX(104, RZN1_FUNC_UART0_I)>; 125 bias-pull-up; 126 }; 127 }; 128 }; 129