1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/spi/spi-rockchip.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Rockchip SPI Controller 8 9description: 10 The Rockchip SPI controller is used to interface with various devices such 11 as flash and display controllers using the SPI communication interface. 12 13allOf: 14 - $ref: "spi-controller.yaml#" 15 16maintainers: 17 - Heiko Stuebner <heiko@sntech.de> 18 19# Everything else is described in the common file 20properties: 21 compatible: 22 oneOf: 23 - const: rockchip,rk3036-spi 24 - const: rockchip,rk3066-spi 25 - const: rockchip,rk3228-spi 26 - const: rockchip,rv1108-spi 27 - items: 28 - enum: 29 - rockchip,px30-spi 30 - rockchip,rk3188-spi 31 - rockchip,rk3288-spi 32 - rockchip,rk3368-spi 33 - rockchip,rk3399-spi 34 - const: rockchip,rk3066-spi 35 36 reg: 37 maxItems: 1 38 39 interrupts: 40 maxItems: 1 41 42 clocks: 43 items: 44 - description: transfer-clock 45 - description: peripheral clock 46 47 clock-names: 48 items: 49 - const: spiclk 50 - const: apb_pclk 51 52 dmas: 53 items: 54 - description: TX DMA Channel 55 - description: RX DMA Channel 56 57 dma-names: 58 items: 59 - const: tx 60 - const: rx 61 62 rx-sample-delay-ns: 63 default: 0 64 description: 65 Nano seconds to delay after the SCLK edge before sampling Rx data 66 (may need to be fine tuned for high capacitance lines). 67 If not specified 0 will be used. 68 69 pinctrl-names: 70 minItems: 1 71 items: 72 - const: default 73 - const: sleep 74 description: 75 Names for the pin configuration(s); may be "default" or "sleep", 76 where the "sleep" configuration may describe the state 77 the pins should be in during system suspend. 78 79required: 80 - compatible 81 - reg 82 - interrupts 83 - clocks 84 - clock-names 85 86examples: 87 - | 88 #include <dt-bindings/clock/rk3188-cru-common.h> 89 #include <dt-bindings/interrupt-controller/arm-gic.h> 90 #include <dt-bindings/interrupt-controller/irq.h> 91 spi0: spi@ff110000 { 92 compatible = "rockchip,rk3066-spi"; 93 reg = <0xff110000 0x1000>; 94 interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>; 95 clocks = <&cru SCLK_SPI0>, <&cru PCLK_SPI0>; 96 clock-names = "spiclk", "apb_pclk"; 97 dmas = <&pdma1 11>, <&pdma1 12>; 98 dma-names = "tx", "rx"; 99 pinctrl-0 = <&spi1_pins>; 100 pinctrl-1 = <&spi1_sleep>; 101 pinctrl-names = "default", "sleep"; 102 rx-sample-delay-ns = <10>; 103 #address-cells = <1>; 104 #size-cells = <0>; 105 }; 106