xref: /linux/Documentation/devicetree/bindings/ata/sata_highbank.yaml (revision 34f7c6e7d4396090692a09789db231e12cb4762b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/ata/sata_highbank.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Calxeda AHCI SATA Controller
8
9description: |
10  The Calxeda SATA controller mostly conforms to the AHCI interface
11  with some special extensions to add functionality, to map GPIOs for
12  activity LEDs and for mapping the ComboPHYs.
13
14maintainers:
15  - Andre Przywara <andre.przywara@arm.com>
16
17properties:
18  compatible:
19    const: calxeda,hb-ahci
20
21  reg:
22    maxItems: 1
23
24  interrupts:
25    maxItems: 1
26
27  dma-coherent: true
28
29  calxeda,pre-clocks:
30    $ref: /schemas/types.yaml#/definitions/uint32
31    description: |
32      Indicates the number of additional clock cycles to transmit before
33      sending an SGPIO pattern.
34
35  calxeda,post-clocks:
36    $ref: /schemas/types.yaml#/definitions/uint32
37    description: |
38      Indicates the number of additional clock cycles to transmit after
39      sending an SGPIO pattern.
40
41  calxeda,led-order:
42    description: Maps port numbers to offsets within the SGPIO bitstream.
43    $ref: /schemas/types.yaml#/definitions/uint32-array
44    minItems: 1
45    maxItems: 8
46
47  calxeda,port-phys:
48    description: |
49      phandle-combophy and lane assignment, which maps each SATA port to a
50      combophy and a lane within that combophy
51    $ref: /schemas/types.yaml#/definitions/phandle-array
52    minItems: 1
53    maxItems: 8
54    items:
55      minItems: 2
56      maxItems: 2
57
58  calxeda,tx-atten:
59    description: |
60      Contains TX attenuation override codes, one per port.
61      The upper 24 bits of each entry are always 0 and thus ignored.
62    $ref: /schemas/types.yaml#/definitions/uint32-array
63    minItems: 1
64    maxItems: 8
65
66  calxeda,sgpio-gpio:
67    maxItems: 3
68    description: |
69      phandle-gpio bank, bit offset, and default on or off, which indicates
70      that the driver supports SGPIO indicator lights using the indicated
71      GPIOs.
72
73required:
74  - compatible
75  - reg
76  - interrupts
77
78additionalProperties: false
79
80examples:
81  - |
82    sata@ffe08000 {
83        compatible = "calxeda,hb-ahci";
84        reg = <0xffe08000 0x1000>;
85        interrupts = <115>;
86        dma-coherent;
87        calxeda,port-phys = <&combophy5 0>, <&combophy0 0>, <&combophy0 1>,
88                             <&combophy0 2>, <&combophy0 3>;
89        calxeda,sgpio-gpio =<&gpioh 5 1>, <&gpioh 6 1>, <&gpioh 7 1>;
90        calxeda,led-order = <4 0 1 2 3>;
91        calxeda,tx-atten = <0xff 22 0xff 0xff 23>;
92        calxeda,pre-clocks = <10>;
93        calxeda,post-clocks = <0>;
94    };
95
96...
97