1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/spi/arm,pl0
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Peripheral-specific properties for Arm
8
9 maintainers:
10 - Linus Walleij <linus.walleij@linaro.org>
11
12 select: false
13
14 properties:
15 pl022,interface:
16 description: SPI interface type
17 $ref: /schemas/types.yaml#/definitions/uin
18 enum:
19 - 0 # SPI
20 - 1 # Texas Instruments Synchronous
21 - 2 # Microwire (Half Duplex)
22
23 pl022,com-mode:
24 description: Specifies the transfer mode
25 $ref: /schemas/types.yaml#/definitions/uin
26 enum:
27 - 0 # interrupt mode
28 - 1 # polling mode
29 - 2 # DMA mode
30 default: 1
31
32 pl022,rx-level-trig:
33 description: Rx FIFO watermark level
34 $ref: /schemas/types.yaml#/definitions/uin
35 minimum: 0
36 maximum: 4
37
38 pl022,tx-level-trig:
39 description: Tx FIFO watermark level
40 $ref: /schemas/types.yaml#/definitions/uin
41 minimum: 0
42 maximum: 4
43
44 pl022,ctrl-len:
45 description: Microwire interface - Control
46 $ref: /schemas/types.yaml#/definitions/uin
47 minimum: 0x03
48 maximum: 0x1f
49
50 pl022,wait-state:
51 description: Microwire interface - Wait st
52 $ref: /schemas/types.yaml#/definitions/uin
53 enum: [0, 1]
54
55 pl022,duplex:
56 description: Microwire interface - Full/Ha
57 $ref: /schemas/types.yaml#/definitions/uin
58 enum: [0, 1]
59
60 additionalProperties: true
61 ...
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