xref: /freebsd/sys/contrib/device-tree/Bindings/i2c/nuvoton,npcm7xx-i2c.yaml (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/i2c/nuvoton,npcm7xx-i2c.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: nuvoton NPCM7XX I2C Controller Device Tree Bindings
8
9description: |
10  The NPCM750x includes sixteen I2C bus controllers. All Controllers support
11  both master and slave mode. Each controller can switch between master and slave
12  at run time (i.e. IPMB mode). Each controller has two 16 byte HW FIFO for TX and
13  RX.
14
15maintainers:
16  - Tali Perry <tali.perry1@gmail.com>
17
18properties:
19  compatible:
20    const: nuvoton,npcm7xx-i2c
21
22  reg:
23    maxItems: 1
24
25  interrupts:
26    maxItems: 1
27
28  clocks:
29    maxItems: 1
30    description: Reference clock for the I2C bus
31
32  clock-frequency:
33    description: Desired I2C bus clock frequency in Hz. If not specified,
34                 the default 100 kHz frequency will be used.
35                 possible values are 100000, 400000 and 1000000.
36    default: 100000
37    enum: [100000, 400000, 1000000]
38
39required:
40  - compatible
41  - reg
42  - interrupts
43  - clocks
44
45allOf:
46  - $ref: /schemas/i2c/i2c-controller.yaml#
47
48unevaluatedProperties: false
49
50examples:
51  - |
52    #include <dt-bindings/clock/nuvoton,npcm7xx-clock.h>
53    #include <dt-bindings/interrupt-controller/arm-gic.h>
54    i2c0: i2c@80000 {
55        reg = <0x80000 0x1000>;
56        clocks = <&clk NPCM7XX_CLK_APB2>;
57        clock-frequency = <100000>;
58        interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
59        compatible = "nuvoton,npcm750-i2c";
60    };
61
62...
63