From 34e3b69b1edc966f0f4dcdd880afba3a2dad8c09 Mon Sep 17 00:00:00 2001 From: Phil Edworthy Date: Fri, 24 Jun 2022 09:48:32 +0100 Subject: dt-bindings: pinctrl: Add DT bindings for Renesas RZ/V2M pinctrl Add device tree binding documentation and header file for Renesas RZ/V2M pinctrl. Signed-off-by: Phil Edworthy Reviewed-by: Lad Prabhakar Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/20220624084833.22605-2-phil.edworthy@renesas.com Signed-off-by: Geert Uytterhoeven --- .../bindings/pinctrl/renesas,rzv2m-pinctrl.yaml | 170 +++++++++++++++++++++ include/dt-bindings/pinctrl/rzv2m-pinctrl.h | 23 +++ 2 files changed, 193 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/renesas,rzv2m-pinctrl.yaml create mode 100644 include/dt-bindings/pinctrl/rzv2m-pinctrl.h diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzv2m-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzv2m-pinctrl.yaml new file mode 100644 index 000000000000..eac6245db7dc --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzv2m-pinctrl.yaml @@ -0,0 +1,170 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/renesas,rzv2m-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/V2M combined Pin and GPIO controller + +maintainers: + - Geert Uytterhoeven + - Phil Edworthy + +description: + The Renesas RZ/V2M SoC features a combined Pin and GPIO controller. + Pin multiplexing and GPIO configuration is performed on a per-pin basis. + Each port features up to 16 pins, each of them configurable for GPIO function + (port mode) or in alternate function mode. + Up to 8 different alternate function modes exist for each single pin. + +properties: + compatible: + const: renesas,r9a09g011-pinctrl # RZ/V2M + + reg: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + const: 2 + description: + The first cell contains the global GPIO port index, constructed using the + RZV2M_GPIO() helper macro in and the + second cell represents consumer flag as mentioned in ../gpio/gpio.txt + E.g. "RZV2M_GPIO(8, 1)" for P8_1. + + gpio-ranges: + maxItems: 1 + + interrupts: + description: INEXINT[0..38] corresponding to individual pin inputs. + maxItems: 39 + + clocks: + maxItems: 1 + + power-domains: + maxItems: 1 + + resets: + maxItems: 1 + +additionalProperties: + anyOf: + - type: object + allOf: + - $ref: pincfg-node.yaml# + - $ref: pinmux-node.yaml# + + description: + Pin controller client devices use pin configuration subnodes (children + and grandchildren) for desired pin configuration. + Client device subnodes use below standard properties. + + properties: + phandle: true + pinmux: + description: + Values are constructed from GPIO port number, pin number, and + alternate function configuration number using the RZV2M_PORT_PINMUX() + helper macro in . + pins: true + bias-disable: true + bias-pull-down: true + bias-pull-up: true + drive-strength-microamp: + # Superset of supported values + enum: [ 1600, 1800, 2000, 3200, 3800, 4000, 6400, 7800, 8000, + 9000, 9600, 11000, 12000, 13000, 18000 ] + slew-rate: + description: 0 is slow slew rate, 1 is fast slew rate + enum: [ 0, 1 ] + gpio-hog: true + gpios: true + output-high: true + output-low: true + line-name: true + + - type: object + properties: + phandle: true + + additionalProperties: + $ref: "#/additionalProperties/anyOf/0" + +allOf: + - $ref: "pinctrl.yaml#" + +required: + - compatible + - reg + - gpio-controller + - '#gpio-cells' + - gpio-ranges + - interrupts + - clocks + - power-domains + - resets + +examples: + - | + #include + #include + #include + + pinctrl: pinctrl@b6250000 { + compatible = "renesas,r9a09g011-pinctrl"; + reg = <0xb6250000 0x800>; + + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pinctrl 0 0 352>; + interrupts = , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + ; + clocks = <&cpg CPG_MOD R9A09G011_PFC_PCLK>; + resets = <&cpg R9A09G011_PFC_PRESETN>; + power-domains = <&cpg>; + + i2c2_pins: i2c2 { + pinmux = , /* SDA */ + ; /* SCL */ + }; + }; diff --git a/include/dt-bindings/pinctrl/rzv2m-pinctrl.h b/include/dt-bindings/pinctrl/rzv2m-pinctrl.h new file mode 100644 index 000000000000..525532cd15da --- /dev/null +++ b/include/dt-bindings/pinctrl/rzv2m-pinctrl.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* + * This header provides constants for Renesas RZ/V2M pinctrl bindings. + * + * Copyright (C) 2022 Renesas Electronics Corp. + * + */ + +#ifndef __DT_BINDINGS_RZV2M_PINCTRL_H +#define __DT_BINDINGS_RZV2M_PINCTRL_H + +#define RZV2M_PINS_PER_PORT 16 + +/* + * Create the pin index from its bank and position numbers and store in + * the upper 16 bits the alternate function identifier + */ +#define RZV2M_PORT_PINMUX(b, p, f) ((b) * RZV2M_PINS_PER_PORT + (p) | ((f) << 16)) + +/* Convert a port and pin label to its global pin index */ +#define RZV2M_GPIO(port, pin) ((port) * RZV2M_PINS_PER_PORT + (pin)) + +#endif /* __DT_BINDINGS_RZV2M_PINCTRL_H */ -- cgit v1.2.3