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
7 title: Renesas RZ/N1 Pin Controller
8
9 maintainers:
10 - Fabrizio Castro <fabrizio.castro.jz@renesas.com>
11 - Geert Uytterhoeven <geert+renesas@glider.be>
12
13 properties:
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
34 allOf:
35 - $ref: pinctrl.yaml#
36
37 required:
38 - compatible
39 - reg
40 - clocks
41 - clock-names
42
43 additionalProperties:
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
96 examples:
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 };
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