1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/ata/cortina,gemini-sata-bridge.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Cortina Systems Gemini SATA Bridge
8
9 maintainers:
10 - Linus Walleij <linus.walleij@linaro.org>
11
12 description: |
13 The Gemini SATA bridge in a SoC-internal PATA to SATA bridge that
14 takes two Faraday Technology FTIDE010 PATA controllers and bridges
15 them in different configurations to two SATA ports.
16
17 properties:
18 compatible:
19 const: cortina,gemini-sata-bridge
20
21 reg:
22 maxItems: 1
23
24 resets:
25 minItems: 2
26 maxItems: 2
27 description: phandles to the reset lines for both SATA bridges
28
29 reset-names:
30 items:
31 - const: sata0
32 - const: sata1
33
34 clocks:
35 minItems: 2
36 maxItems: 2
37 description: phandles to the compulsory peripheral clocks
38
39 clock-names:
40 items:
41 - const: SATA0_PCLK
42 - const: SATA1_PCLK
43
44 syscon:
45 $ref: /schemas/types.yaml#/definitions/phandle
46 description: a phandle to the global Gemini system controller
47
48 cortina,gemini-ata-muxmode:
49 $ref: /schemas/types.yaml#/definitions/uint32
50 enum:
51 - 0
52 - 1
53 - 2
54 - 3
55 description: |
56 Tell the desired multiplexing mode for the ATA controller and SATA
57 bridges.
58 Mode 0: ata0 master <-> sata0
59 ata1 master <-> sata1
60 ata0 slave interface brought out on IDE pads
61 Mode 1: ata0 master <-> sata0
62 ata1 master <-> sata1
63 ata1 slave interface brought out on IDE pads
64 Mode 2: ata1 master <-> sata1
65 ata1 slave <-> sata0
66 ata0 master and slave interfaces brought out on IDE pads
67 Mode 3: ata0 master <-> sata0
68 ata0 slave <-> sata1
69 ata1 master and slave interfaces brought out on IDE pads
70
71 cortina,gemini-enable-ide-pins:
72 type: boolean
73 description: Enables the PATA to IDE connection.
74 The muxmode setting decides whether ATA0 or ATA1 is brought out,
75 and whether master, slave or both interfaces get brought out.
76
77 cortina,gemini-enable-sata-bridge:
78 type: boolean
79 description: Enables the PATA to SATA bridge inside the Gemnini SoC.
80 The Muxmode decides what PATA blocks will be muxed out and how.
81
82 required:
83 - clocks
84 - clock-names
85 - cortina,gemini-ata-muxmode
86 - resets
87 - reset-names
88 - compatible
89 - reg
90 - syscon
91
92 additionalProperties: false
93
94 examples:
95 - |
96 #include <dt-bindings/clock/cortina,gemini-clock.h>
97 sata@46000000 {
98 compatible = "cortina,gemini-sata-bridge";
99 reg = <0x46000000 0x100>;
100 resets = <&rcon 26>, <&rcon 27>;
101 reset-names = "sata0", "sata1";
102 clocks = <&gcc GEMINI_CLK_GATE_SATA0>,
103 <&gcc GEMINI_CLK_GATE_SATA1>;
104 clock-names = "SATA0_PCLK", "SATA1_PCLK";
105 syscon = <&syscon>;
106 cortina,gemini-ata-muxmode = <3>;
107 cortina,gemini-enable-ide-pins;
108 cortina,gemini-enable-sata-bridge;
109 };
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