spi-fsl-lpspi.yaml (1641B)
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/spi/spi-fsl-lpspi.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Freescale Low Power SPI (LPSPI) for i.MX 8 9maintainers: 10 - Anson Huang <Anson.Huang@nxp.com> 11 12allOf: 13 - $ref: "/schemas/spi/spi-controller.yaml#" 14 15properties: 16 compatible: 17 oneOf: 18 - enum: 19 - fsl,imx7ulp-spi 20 - fsl,imx8qxp-spi 21 - items: 22 - const: fsl,imx8ulp-spi 23 - const: fsl,imx7ulp-spi 24 reg: 25 maxItems: 1 26 27 interrupts: 28 maxItems: 1 29 30 clocks: 31 items: 32 - description: SoC SPI per clock 33 - description: SoC SPI ipg clock 34 35 clock-names: 36 items: 37 - const: per 38 - const: ipg 39 40 fsl,spi-only-use-cs1-sel: 41 description: 42 spi common code does not support use of CS signals discontinuously. 43 i.MX8DXL-EVK board only uses CS1 without using CS0. Therefore, add 44 this property to re-config the chipselect value in the LPSPI driver. 45 type: boolean 46 47required: 48 - compatible 49 - reg 50 - interrupts 51 - clocks 52 - clock-names 53 54unevaluatedProperties: false 55 56examples: 57 - | 58 #include <dt-bindings/clock/imx7ulp-clock.h> 59 #include <dt-bindings/interrupt-controller/arm-gic.h> 60 61 spi@40290000 { 62 compatible = "fsl,imx7ulp-spi"; 63 reg = <0x40290000 0x10000>; 64 interrupt-parent = <&intc>; 65 interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>; 66 clocks = <&clks IMX7ULP_CLK_LPSPI2>, 67 <&clks IMX7ULP_CLK_DUMMY>; 68 clock-names = "per", "ipg"; 69 spi-slave; 70 fsl,spi-only-use-cs1-sel; 71 };