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Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/renesas,rzn1-pinctrl.yaml')
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diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzn1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzn1-pinctrl.yaml new file mode 100644 index 000000000..4a43af0d6 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzn1-pinctrl.yaml @@ -0,0 +1,129 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/renesas,rzn1-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/N1 Pin Controller + +maintainers: + - Gareth Williams <gareth.williams.jx@renesas.com> + - Geert Uytterhoeven <geert+renesas@glider.be> + +properties: + compatible: + items: + - enum: + - renesas,r9a06g032-pinctrl # RZ/N1D + - renesas,r9a06g033-pinctrl # RZ/N1S + - const: renesas,rzn1-pinctrl # Generic RZ/N1 + + reg: + items: + - description: GPIO Multiplexing Level1 Register Block + - description: GPIO Multiplexing Level2 Register Block + + clocks: + maxItems: 1 + + clock-names: + const: bus + description: + The bus clock, sometimes described as pclk, for register accesses. + +required: + - compatible + - reg + - clocks + - clock-names + +additionalProperties: + anyOf: + - type: object + allOf: + - $ref: pincfg-node.yaml# + - $ref: pinmux-node.yaml# + + description: + A pin multiplexing sub-node describes how to configure a set of (or a + single) pin in some desired alternate function mode. + A single sub-node may define several pin configurations. + + properties: + pinmux: + description: | + Integer array representing pin number and pin multiplexing + configuration. + When a pin has to be configured in alternate function mode, use + this property to identify the pin by its global index, and provide + its alternate function configuration number along with it. + When multiple pins are required to be configured as part of the + same alternate function they shall be specified as members of the + same argument list of a single "pinmux" property. + Integers values in the "pinmux" argument list are assembled as: + (PIN | MUX_FUNC << 8) + where PIN directly corresponds to the pl_gpio pin number and + MUX_FUNC is one of the alternate function identifiers defined in: + <include/dt-bindings/pinctrl/rzn1-pinctrl.h> + These identifiers collapse the IO Multiplex Configuration Level 1 + and Level 2 numbers that are detailed in the hardware reference + manual into a single number. The identifiers for Level 2 are simply + offset by 10. Additional identifiers are provided to specify the + MDIO source peripheral. + + phandle: true + bias-disable: true + bias-pull-up: + description: Pull up the pin with 50 kOhm + bias-pull-down: + description: Pull down the pin with 50 kOhm + bias-high-impedance: true + drive-strength: + enum: [ 4, 6, 8, 12 ] + + required: + - pinmux + + additionalProperties: + $ref: "#/additionalProperties/anyOf/0" + + - type: object + properties: + phandle: true + + additionalProperties: + $ref: "#/additionalProperties/anyOf/0" + +examples: + - | + #include <dt-bindings/clock/r9a06g032-sysctrl.h> + #include <dt-bindings/pinctrl/rzn1-pinctrl.h> + pinctrl: pinctrl@40067000 { + compatible = "renesas,r9a06g032-pinctrl", "renesas,rzn1-pinctrl"; + reg = <0x40067000 0x1000>, <0x51000000 0x480>; + clocks = <&sysctrl R9A06G032_HCLK_PINCONFIG>; + clock-names = "bus"; + + /* + * A serial communication interface with a TX output pin and an RX + * input pin. + */ + pins_uart0: pins_uart0 { + pinmux = < + RZN1_PINMUX(103, RZN1_FUNC_UART0_I) /* UART0_TXD */ + RZN1_PINMUX(104, RZN1_FUNC_UART0_I) /* UART0_RXD */ + >; + }; + + /* + * Set the pull-up on the RXD pin of the UART. + */ + pins_uart0_alt: pins_uart0_alt { + pinmux = <RZN1_PINMUX(103, RZN1_FUNC_UART0_I)>; + + pins_uart6_rx { + pinmux = <RZN1_PINMUX(104, RZN1_FUNC_UART0_I)>; + bias-pull-up; + }; + }; + }; |