1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/ata/ceva,ahci-1v84.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Ceva AHCI SATA Controller
8
9maintainers:
10  - Piyush Mehta <piyush.mehta@amd.com>
11
12description: |
13  The Ceva SATA controller mostly conforms to the AHCI interface with some
14  special extensions to add functionality, is a high-performance dual-port
15  SATA host controller with an AHCI compliant command layer which supports
16  advanced features such as native command queuing and frame information
17  structure (FIS) based switching for systems employing port multipliers.
18
19properties:
20  compatible:
21    const: ceva,ahci-1v84
22
23  reg:
24    maxItems: 1
25
26  clocks:
27    maxItems: 1
28
29  dma-coherent: true
30
31  interrupts:
32    maxItems: 1
33
34  iommus:
35    maxItems: 4
36
37  power-domains:
38    maxItems: 1
39
40  ceva,p0-cominit-params:
41    $ref: /schemas/types.yaml#/definitions/uint8-array
42    description: |
43      OOB timing value for COMINIT parameter for port 0.
44      The fields for the above parameter must be as shown below:-
45      ceva,p0-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>;
46    items:
47      - description: CINMP - COMINIT Negate Minimum Period.
48      - description: CIBGN - COMINIT Burst Gap Nominal.
49      - description: CIBGMX - COMINIT Burst Gap Maximum.
50      - description: CIBGMN - COMINIT Burst Gap Minimum.
51
52  ceva,p0-comwake-params:
53    $ref: /schemas/types.yaml#/definitions/uint8-array
54    description: |
55      OOB timing value for COMWAKE parameter for port 0.
56      The fields for the above parameter must be as shown below:-
57      ceva,p0-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>;
58    items:
59      - description: CWBGMN - COMWAKE Burst Gap Minimum.
60      - description: CWBGMX - COMWAKE Burst Gap Maximum.
61      - description: CWBGN - COMWAKE Burst Gap Nominal.
62      - description: CWNMP - COMWAKE Negate Minimum Period.
63
64  ceva,p0-burst-params:
65    $ref: /schemas/types.yaml#/definitions/uint8-array
66    description: |
67      Burst timing value for COM parameter for port 0.
68      The fields for the above parameter must be as shown below:-
69      ceva,p0-burst-params = /bits/ 8 <BMX BNM SFD PTST>;
70    items:
71      - description: BMX - COM Burst Maximum.
72      - description: BNM - COM Burst Nominal.
73      - description: SFD - Signal Failure Detection value.
74      - description: PTST - Partial to Slumber timer value.
75
76  ceva,p0-retry-params:
77    $ref: /schemas/types.yaml#/definitions/uint16-array
78    description: |
79      Retry interval timing value for port 0.
80      The fields for the above parameter must be as shown below:-
81      ceva,p0-retry-params = /bits/ 16 <RIT RCT>;
82    items:
83      - description: RIT - Retry Interval Timer.
84      - description: RCT - Rate Change Timer.
85
86  ceva,p1-cominit-params:
87    $ref: /schemas/types.yaml#/definitions/uint8-array
88    description: |
89      OOB timing value for COMINIT parameter for port 1.
90      The fields for the above parameter must be as shown below:-
91      ceva,p1-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>;
92    items:
93      - description: CINMP - COMINIT Negate Minimum Period.
94      - description: CIBGN - COMINIT Burst Gap Nominal.
95      - description: CIBGMX - COMINIT Burst Gap Maximum.
96      - description: CIBGMN - COMINIT Burst Gap Minimum.
97
98  ceva,p1-comwake-params:
99    $ref: /schemas/types.yaml#/definitions/uint8-array
100    description: |
101      OOB timing value for COMWAKE parameter for port 1.
102      The fields for the above parameter must be as shown below:-
103      ceva,p1-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>;
104    items:
105      - description: CWBGMN - COMWAKE Burst Gap Minimum.
106      - description: CWBGMX - COMWAKE Burst Gap Maximum.
107      - description: CWBGN - COMWAKE Burst Gap Nominal.
108      - description: CWNMP - COMWAKE Negate Minimum Period.
109
110  ceva,p1-burst-params:
111    $ref: /schemas/types.yaml#/definitions/uint8-array
112    description: |
113      Burst timing value for COM parameter for port 1.
114      The fields for the above parameter must be as shown below:-
115      ceva,p1-burst-params = /bits/ 8 <BMX BNM SFD PTST>;
116    items:
117      - description: BMX - COM Burst Maximum.
118      - description: BNM - COM Burst Nominal.
119      - description: SFD - Signal Failure Detection value.
120      - description: PTST - Partial to Slumber timer value.
121
122  ceva,p1-retry-params:
123    $ref: /schemas/types.yaml#/definitions/uint16-array
124    description: |
125      Retry interval timing value for port 1.
126      The fields for the above parameter must be as shown below:-
127      ceva,pN-retry-params = /bits/ 16 <RIT RCT>;
128    items:
129      - description: RIT - Retry Interval Timer.
130      - description: RCT - Rate Change Timer.
131
132  ceva,broken-gen2:
133    $ref: /schemas/types.yaml#/definitions/flag
134    description: |
135      limit to gen1 speed instead of gen2.
136
137  phys:
138    maxItems: 1
139
140  phy-names:
141    items:
142      - const: sata-phy
143
144  resets:
145    maxItems: 1
146
147required:
148  - compatible
149  - reg
150  - clocks
151  - interrupts
152  - ceva,p0-cominit-params
153  - ceva,p0-comwake-params
154  - ceva,p0-burst-params
155  - ceva,p0-retry-params
156  - ceva,p1-cominit-params
157  - ceva,p1-comwake-params
158  - ceva,p1-burst-params
159  - ceva,p1-retry-params
160
161additionalProperties: false
162
163examples:
164  - |
165    #include <dt-bindings/clock/xlnx-zynqmp-clk.h>
166    #include <dt-bindings/interrupt-controller/irq.h>
167    #include <dt-bindings/power/xlnx-zynqmp-power.h>
168    #include <dt-bindings/reset/xlnx-zynqmp-resets.h>
169    #include <dt-bindings/clock/xlnx-zynqmp-clk.h>
170    #include <dt-bindings/phy/phy.h>
171
172    sata: ahci@fd0c0000 {
173        compatible = "ceva,ahci-1v84";
174        reg = <0xfd0c0000 0x200>;
175        interrupt-parent = <&gic>;
176        interrupts = <0 133 IRQ_TYPE_LEVEL_HIGH>;
177        clocks = <&zynqmp_clk SATA_REF>;
178        ceva,p0-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
179        ceva,p0-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
180        ceva,p0-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
181        ceva,p0-retry-params = /bits/ 16 <0x0216 0x7F06>;
182        ceva,p1-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
183        ceva,p1-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
184        ceva,p1-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
185        ceva,p1-retry-params = /bits/ 16 <0x0216 0x7F06>;
186        ceva,broken-gen2;
187        phys = <&psgtr 1 PHY_TYPE_SATA 1 1>;
188        resets = <&zynqmp_reset ZYNQMP_RESET_SATA>;
189    };
190