Convert SPI DT binding for Atmel/Microchip SoCs to json-schema. Signed-off-by: Sergiu Moga <sergiu.moga@xxxxxxxxxxxxx> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> --- v1 -> v2: - change subject headline prefix from "dt-bindings: spi" to "spi: atmel" - change maintainer - kept the compatbile as items (instead of switching to enums) and at91rm9200 as fallback for sam9x60, since the evolution of IP's is incremental. - removed unnecessay "cs-gpios" property and descriptions - added min/max for fifo-size property. v2 -> v3: - change subject headline prefix from "spi: atmel" to "spi: dt-bindings: atmel,at91rm9200-spi: convert to json-schema" - use enum instead of a range for "atmel,fifo-size" .../bindings/spi/atmel,at91rm9200-spi.yaml | 76 +++++++++++++++++++ .../devicetree/bindings/spi/spi_atmel.txt | 36 --------- 2 files changed, 76 insertions(+), 36 deletions(-) create mode 100644 Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml delete mode 100644 Documentation/devicetree/bindings/spi/spi_atmel.txt diff --git a/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml b/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml new file mode 100644 index 000000000000..084897cc8f66 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/atmel,at91rm9200-spi.yaml @@ -0,0 +1,76 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/atmel,spi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Atmel SPI device + +maintainers: + - Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx> + +allOf: + - $ref: spi-controller.yaml# + +properties: + compatible: + oneOf: + - items: + - const: atmel,at91rm9200-spi + - items: + - const: microchip,sam9x60-spi + - const: atmel,at91rm9200-spi + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clock-names: + contains: + const: spi_clk + + clocks: + maxItems: 1 + + atmel,fifo-size: + $ref: /schemas/types.yaml#/definitions/uint32 + description: | + Maximum number of data the RX and TX FIFOs can store for FIFO + capable SPI controllers. + enum: [ 16, 32 ] + +required: + - compatible + - reg + - interrupts + - clock-names + - clocks + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + + spi1: spi@fffcc000 { + compatible = "atmel,at91rm9200-spi"; + reg = <0xfffcc000 0x4000>; + interrupts = <13 IRQ_TYPE_LEVEL_HIGH 5>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&spi1_clk>; + clock-names = "spi_clk"; + cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>; + atmel,fifo-size = <32>; + + mmc@0 { + compatible = "mmc-spi-slot"; + reg = <0>; + gpios = <&pioC 4 GPIO_ACTIVE_HIGH>; /* CD */ + spi-max-frequency = <25000000>; + }; + }; diff --git a/Documentation/devicetree/bindings/spi/spi_atmel.txt b/Documentation/devicetree/bindings/spi/spi_atmel.txt deleted file mode 100644 index 5bb4a8f1df7a..000000000000 --- a/Documentation/devicetree/bindings/spi/spi_atmel.txt +++ /dev/null @@ -1,36 +0,0 @@ -Atmel SPI device - -Required properties: -- compatible : should be "atmel,at91rm9200-spi" or "microchip,sam9x60-spi". -- reg: Address and length of the register set for the device -- interrupts: Should contain spi interrupt -- cs-gpios: chipselects (optional for SPI controller version >= 2 with the - Chip Select Active After Transfer feature). -- clock-names: tuple listing input clock names. - Required elements: "spi_clk" -- clocks: phandles to input clocks. - -Optional properties: -- atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO - capable SPI controllers. - -Example: - -spi1: spi@fffcc000 { - compatible = "atmel,at91rm9200-spi"; - reg = <0xfffcc000 0x4000>; - interrupts = <13 4 5>; - #address-cells = <1>; - #size-cells = <0>; - clocks = <&spi1_clk>; - clock-names = "spi_clk"; - cs-gpios = <&pioB 3 0>; - atmel,fifo-size = <32>; - - mmc-slot@0 { - compatible = "mmc-spi-slot"; - reg = <0>; - gpios = <&pioC 4 0>; /* CD */ - spi-max-frequency = <25000000>; - }; -}; -- 2.25.1
