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109 lines
2.6 KiB
109 lines
2.6 KiB
# SPDX-License-Identifier: GPL-2.0 |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/spi/spi-rockchip.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Rockchip SPI Controller |
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description: |
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The Rockchip SPI controller is used to interface with various devices such |
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as flash and display controllers using the SPI communication interface. |
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allOf: |
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- $ref: "spi-controller.yaml#" |
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maintainers: |
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- Heiko Stuebner <[email protected]> |
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# Everything else is described in the common file |
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properties: |
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compatible: |
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oneOf: |
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- const: rockchip,rk3036-spi |
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- const: rockchip,rk3066-spi |
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- const: rockchip,rk3228-spi |
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- const: rockchip,rv1108-spi |
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- items: |
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- enum: |
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- rockchip,px30-spi |
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- rockchip,rk3188-spi |
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- rockchip,rk3288-spi |
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- rockchip,rk3308-spi |
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- rockchip,rk3328-spi |
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- rockchip,rk3368-spi |
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- rockchip,rk3399-spi |
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- const: rockchip,rk3066-spi |
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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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items: |
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- description: transfer-clock |
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- description: peripheral clock |
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clock-names: |
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items: |
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- const: spiclk |
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- const: apb_pclk |
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dmas: |
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items: |
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- description: TX DMA Channel |
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- description: RX DMA Channel |
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dma-names: |
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items: |
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- const: tx |
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- const: rx |
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rx-sample-delay-ns: |
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default: 0 |
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description: |
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Nano seconds to delay after the SCLK edge before sampling Rx data |
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(may need to be fine tuned for high capacitance lines). |
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If not specified 0 will be used. |
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pinctrl-names: |
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minItems: 1 |
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items: |
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- const: default |
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- const: sleep |
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description: |
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Names for the pin configuration(s); may be "default" or "sleep", |
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where the "sleep" configuration may describe the state |
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the pins should be in during system suspend. |
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required: |
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- compatible |
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- reg |
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- interrupts |
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- clocks |
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- clock-names |
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unevaluatedProperties: false |
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examples: |
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- | |
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#include <dt-bindings/clock/rk3188-cru-common.h> |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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#include <dt-bindings/interrupt-controller/irq.h> |
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spi0: spi@ff110000 { |
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compatible = "rockchip,rk3066-spi"; |
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reg = <0xff110000 0x1000>; |
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interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>; |
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clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>; |
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clock-names = "spiclk", "apb_pclk"; |
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dmas = <&pdma1 11>, <&pdma1 12>; |
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dma-names = "tx", "rx"; |
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pinctrl-0 = <&spi1_pins>; |
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pinctrl-1 = <&spi1_sleep>; |
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pinctrl-names = "default", "sleep"; |
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rx-sample-delay-ns = <10>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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};
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