tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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 enum:
18 - fsl,imx7ulp-spi
19 - fsl,imx8qxp-spi
20
21 reg:
22 maxItems: 1
23
24 interrupts:
25 maxItems: 1
26
27 clocks:
28 items:
29 - description: SoC SPI per clock
30 - description: SoC SPI ipg clock
31
32 clock-names:
33 items:
34 - const: per
35 - const: ipg
36
37 fsl,spi-only-use-cs1-sel:
38 description:
39 spi common code does not support use of CS signals discontinuously.
40 i.MX8DXL-EVK board only uses CS1 without using CS0. Therefore, add
41 this property to re-config the chipselect value in the LPSPI driver.
42 type: boolean
43
44required:
45 - compatible
46 - reg
47 - interrupts
48 - clocks
49 - clock-names
50
51unevaluatedProperties: false
52
53examples:
54 - |
55 #include <dt-bindings/clock/imx7ulp-clock.h>
56 #include <dt-bindings/interrupt-controller/arm-gic.h>
57
58 spi@40290000 {
59 compatible = "fsl,imx7ulp-spi";
60 reg = <0x40290000 0x10000>;
61 interrupt-parent = <&intc>;
62 interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
63 clocks = <&clks IMX7ULP_CLK_LPSPI2>,
64 <&clks IMX7ULP_CLK_DUMMY>;
65 clock-names = "per", "ipg";
66 spi-slave;
67 fsl,spi-only-use-cs1-sel;
68 };