# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/spi/spi-fsl-lpspi.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Freescale Low Power SPI (LPSPI) for i.MX maintainers: - Anson Huang allOf: - $ref: /schemas/spi/spi-controller.yaml# properties: compatible: oneOf: - enum: - fsl,imx7ulp-spi - fsl,imx8qxp-spi - items: - enum: - fsl,imx8ulp-spi - fsl,imx93-spi - const: fsl,imx7ulp-spi reg: maxItems: 1 interrupts: maxItems: 1 clocks: items: - description: SoC SPI per clock - description: SoC SPI ipg clock clock-names: items: - const: per - const: ipg dmas: items: - description: TX DMA Channel - description: RX DMA Channel dma-names: items: - const: tx - const: rx fsl,spi-only-use-cs1-sel: description: spi common code does not support use of CS signals discontinuously. i.MX8DXL-EVK board only uses CS1 without using CS0. Therefore, add this property to re-config the chipselect value in the LPSPI driver. type: boolean num-cs: description: number of chip selects. minimum: 1 maximum: 2 default: 1 power-domains: maxItems: 1 required: - compatible - reg - interrupts - clocks - clock-names unevaluatedProperties: false examples: - | #include #include spi@40290000 { compatible = "fsl,imx7ulp-spi"; reg = <0x40290000 0x10000>; interrupt-parent = <&intc>; interrupts = ; clocks = <&clks IMX7ULP_CLK_LPSPI2>, <&clks IMX7ULP_CLK_DUMMY>; clock-names = "per", "ipg"; spi-slave; fsl,spi-only-use-cs1-sel; num-cs = <2>; };