dt-bindings: mfd: Convert atmel-flexcom to json-schema
Convert the Atmel flexcom device tree bindings to json schema. Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Balakrishnan Sambath <balakrishnan.s@microchip.com> Link: https://lore.kernel.org/r/20240223-b4-sama5d2-flexcom-yaml-v2-2-7e96c60c7701@microchip.com Signed-off-by: Lee Jones <lee@kernel.org>
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Balakrishnan Sambath
Lee Jones
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mfd/atmel,sama5d2-flexcom.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Microchip Flexcom (Flexible Serial Communication Unit)
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maintainers:
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- Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com>
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description:
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The Microchip Flexcom is just a wrapper which embeds a SPI controller,
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an I2C controller and an USART. Only one function can be used at a
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time and is chosen at boot time according to the device tree.
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properties:
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compatible:
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oneOf:
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- const: atmel,sama5d2-flexcom
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- items:
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- const: microchip,sam9x7-flexcom
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- const: atmel,sama5d2-flexcom
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- items:
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- const: microchip,sama7g5-flexcom
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- const: atmel,sama5d2-flexcom
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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"#address-cells":
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const: 1
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"#size-cells":
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const: 1
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ranges:
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description:
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One range for the full I/O register region. (including USART,
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TWI and SPI registers).
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items:
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maxItems: 3
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atmel,flexcom-mode:
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description: |
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Specifies the flexcom mode as follows:
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1: USART
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2: SPI
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3: I2C.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [1, 2, 3]
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patternProperties:
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"^serial@[0-9a-f]+$":
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type: object
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description:
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Child node describing USART. See atmel-usart.txt for details
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of USART bindings.
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"^spi@[0-9a-f]+$":
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type: object
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description:
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Child node describing SPI. See ../spi/spi_atmel.txt for details
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of SPI bindings.
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"^i2c@[0-9a-f]+$":
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$ref: /schemas/i2c/atmel,at91sam-i2c.yaml
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description:
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Child node describing I2C.
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required:
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- compatible
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- reg
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- clocks
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- "#address-cells"
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- "#size-cells"
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- ranges
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- atmel,flexcom-mode
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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flx0: flexcom@f8034000 {
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compatible = "atmel,sama5d2-flexcom";
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reg = <0xf8034000 0x200>;
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clocks = <&flx0_clk>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x0 0xf8034000 0x800>;
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atmel,flexcom-mode = <2>;
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};
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...
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@ -1,64 +0,0 @@
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* Device tree bindings for Atmel Flexcom (Flexible Serial Communication Unit)
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The Atmel Flexcom is just a wrapper which embeds a SPI controller, an I2C
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controller and an USART. Only one function can be used at a time and is chosen
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at boot time according to the device tree.
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Required properties:
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- compatible: Should be "atmel,sama5d2-flexcom"
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or "microchip,sam9x7-flexcom", "atmel,sama5d2-flexcom"
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- reg: Should be the offset/length value for Flexcom dedicated
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I/O registers (without USART, TWI or SPI registers).
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- clocks: Should be the Flexcom peripheral clock from PMC.
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- #address-cells: Should be <1>
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- #size-cells: Should be <1>
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- ranges: Should be one range for the full I/O register region
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(including USART, TWI and SPI registers).
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- atmel,flexcom-mode: Should be one of the following values:
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- <1> for USART
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- <2> for SPI
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- <3> for I2C
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Required child:
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A single available child device of type matching the "atmel,flexcom-mode"
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property.
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The phandle provided by the clocks property of the child is the same as one for
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the Flexcom parent.
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For other properties, please refer to the documentations of the respective
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device:
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- ../serial/atmel-usart.txt
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- ../spi/spi_atmel.txt
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- ../i2c/i2c-at91.txt
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Example:
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flexcom@f8034000 {
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compatible = "atmel,sama5d2-flexcom";
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reg = <0xf8034000 0x200>;
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clocks = <&flx0_clk>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x0 0xf8034000 0x800>;
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atmel,flexcom-mode = <2>;
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spi@400 {
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compatible = "atmel,at91rm9200-spi";
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reg = <0x400 0x200>;
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interrupts = <19 IRQ_TYPE_LEVEL_HIGH 7>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_flx0_default>;
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#address-cells = <1>;
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#size-cells = <0>;
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clocks = <&flx0_clk>;
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clock-names = "spi_clk";
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atmel,fifo-size = <32>;
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flash@0 {
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compatible = "atmel,at25f512b";
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reg = <0>;
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spi-max-frequency = <20000000>;
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};
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};
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};
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