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 maxItems: 2
26 description: phandles to the reset lines for both SATA bridges
27
28 reset-names:
29 items:
30 - const: sata0
31 - const: sata1
32
33 clocks:
34 maxItems: 2
35 description: phandles to the compulsory peripheral clocks
36
37 clock-names:
38 items:
39 - const: SATA0_PCLK
40 - const: SATA1_PCLK
41
42 syscon:
43 $ref: /schemas/types.yaml#/definitions/phandle
44 description: a phandle to the global Gemini system controller
45
46 cortina,gemini-ata-muxmode:
47 $ref: /schemas/types.yaml#/definitions/uint32
48 enum:
49 - 0
50 - 1
51 - 2
52 - 3
53 description: |
54 Tell the desired multiplexing mode for the ATA controller and SATA
55 bridges.
56 Mode 0: ata0 master <-> sata0
57 ata1 master <-> sata1
58 ata0 slave interface brought out on IDE pads
59 Mode 1: ata0 master <-> sata0
60 ata1 master <-> sata1
61 ata1 slave interface brought out on IDE pads
62 Mode 2: ata1 master <-> sata1
63 ata1 slave <-> sata0
64 ata0 master and slave interfaces brought out on IDE pads
65 Mode 3: ata0 master <-> sata0
66 ata0 slave <-> sata1
67 ata1 master and slave interfaces brought out on IDE pads
68
69 cortina,gemini-enable-ide-pins:
70 type: boolean
71 description: Enables the PATA to IDE connection.
72 The muxmode setting decides whether ATA0 or ATA1 is brought out,
73 and whether master, slave or both interfaces get brought out.
74
75 cortina,gemini-enable-sata-bridge:
76 type: boolean
77 description: Enables the PATA to SATA bridge inside the Gemnini SoC.
78 The Muxmode decides what PATA blocks will be muxed out and how.
79
80 required:
81 - clocks
82 - clock-names
83 - cortina,gemini-ata-muxmode
84 - resets
85 - reset-names
86 - compatible
87 - reg
88 - syscon
89
90 additionalProperties: false
91
92 examples:
93 - |
94 #include <dt-bindings/clock/cortina,gemini-clock.h>
95 sata@46000000 {
96 compatible = "cortina,gemini-sata-bridge";
97 reg = <0x46000000 0x100>;
98 resets = <&rcon 26>, <&rcon 27>;
99 reset-names = "sata0", "sata1";
100 clocks = <&gcc GEMINI_CLK_GATE_SATA0>,
101 <&gcc GEMINI_CLK_GATE_SATA1>;
102 clock-names = "SATA0_PCLK", "SATA1_PCLK";
103 syscon = <&syscon>;
104 cortina,gemini-ata-muxmode = <3>;
105 cortina,gemini-enable-ide-pins;
106 cortina,gemini-enable-sata-bridge;
107 };
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