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