3d21a46093
json-schema versions draft7 and earlier have a weird behavior in that any keywords combined with a '$ref' are ignored (silently). The correct form was to put a '$ref' under an 'allOf'. This behavior is now changed in the 2019-09 json-schema spec and '$ref' can be mixed with other keywords. The json-schema library doesn't yet support this, but the tooling now does a fixup for this and either way works. This has been a constant source of review comments, so let's change this treewide so everyone copies the simpler syntax. Scripted with ruamel.yaml with some manual fixups. Some minor whitespace changes from the script. Signed-off-by: Rob Herring <robh@kernel.org> Acked-by: Maxime Ripard <mripard@kernel.org> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-By: Vinod Koul <vkoul@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> # for I2C Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for-iio Reviewed-by: Stephen Boyd <sboyd@kernel.org> # clock Signed-off-by: Rob Herring <robh@kernel.org>
159 lines
3.9 KiB
YAML
159 lines
3.9 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/spi/spi-pl022.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ARM PL022 SPI controller
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maintainers:
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- Linus Walleij <linus.walleij@linaro.org>
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allOf:
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- $ref: "spi-controller.yaml#"
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# We need a select here so we don't match all nodes with 'arm,primecell'
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select:
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properties:
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compatible:
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contains:
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const: arm,pl022
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required:
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- compatible
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properties:
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compatible:
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items:
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- const: arm,pl022
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- const: arm,primecell
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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maxItems: 2
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clock-names:
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items:
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- enum:
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- SSPCLK
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- sspclk
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- const: apb_pclk
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pl022,autosuspend-delay:
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description: delay in ms following transfer completion before the
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runtime power management system suspends the device. A setting of 0
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indicates no delay and the device will be suspended immediately.
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$ref: "/schemas/types.yaml#/definitions/uint32"
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pl022,rt:
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description: indicates the controller should run the message pump with realtime
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priority to minimise the transfer latency on the bus (boolean)
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type: boolean
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dmas:
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description:
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Two or more DMA channel specifiers following the convention outlined
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in bindings/dma/dma.txt
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minItems: 2
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maxItems: 32
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dma-names:
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description:
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There must be at least one channel named "tx" for transmit and named "rx"
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for receive.
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minItems: 2
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maxItems: 32
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additionalItems: true
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items:
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- const: rx
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- const: tx
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patternProperties:
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"^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-f]+$":
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type: object
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# SPI slave nodes must be children of the SPI master node and can
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# contain the following properties.
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properties:
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pl022,interface:
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description: SPI interface type
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$ref: "/schemas/types.yaml#/definitions/uint32"
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enum:
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- 0 # SPI
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- 1 # Texas Instruments Synchronous Serial Frame Format
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- 2 # Microwire (Half Duplex)
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pl022,com-mode:
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description: Specifies the transfer mode
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$ref: "/schemas/types.yaml#/definitions/uint32"
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enum:
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- 0 # interrupt mode
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- 1 # polling mode
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- 2 # DMA mode
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default: 1
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pl022,rx-level-trig:
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description: Rx FIFO watermark level
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$ref: "/schemas/types.yaml#/definitions/uint32"
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minimum: 0
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maximum: 4
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pl022,tx-level-trig:
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description: Tx FIFO watermark level
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$ref: "/schemas/types.yaml#/definitions/uint32"
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minimum: 0
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maximum: 4
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pl022,ctrl-len:
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description: Microwire interface - Control length
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$ref: "/schemas/types.yaml#/definitions/uint32"
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minimum: 0x03
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maximum: 0x1f
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pl022,wait-state:
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description: Microwire interface - Wait state
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$ref: "/schemas/types.yaml#/definitions/uint32"
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enum: [0, 1]
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pl022,duplex:
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description: Microwire interface - Full/Half duplex
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$ref: "/schemas/types.yaml#/definitions/uint32"
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enum: [0, 1]
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required:
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- compatible
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- reg
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- interrupts
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examples:
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- |
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spi@e0100000 {
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compatible = "arm,pl022", "arm,primecell";
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reg = <0xe0100000 0x1000>;
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#address-cells = <1>;
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#size-cells = <0>;
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interrupts = <0 31 0x4>;
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dmas = <&dma_controller 23 1>,
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<&dma_controller 24 0>;
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dma-names = "rx", "tx";
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m25p80@1 {
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compatible = "st,m25p80";
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reg = <1>;
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spi-max-frequency = <12000000>;
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spi-cpol;
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spi-cpha;
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pl022,interface = <0>;
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pl022,com-mode = <0x2>;
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pl022,rx-level-trig = <0>;
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pl022,tx-level-trig = <0>;
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pl022,ctrl-len = <0x11>;
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pl022,wait-state = <0>;
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pl022,duplex = <0>;
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};
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};
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...
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