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  - Mubin Sayyed <mubin.sayyed@amd.com>
11  - Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
12
13description: |
14  The Ceva SATA controller mostly conforms to the AHCI interface with some
15  special extensions to add functionality, is a high-performance dual-port
16  SATA host controller with an AHCI compliant command layer which supports
17  advanced features such as native command queuing and frame information
18  structure (FIS) based switching for systems employing port multipliers.
19
20properties:
21  compatible:
22    const: ceva,ahci-1v84
23
24  reg:
25    maxItems: 1
26
27  clocks:
28    maxItems: 1
29
30  dma-coherent: true
31
32  interrupts:
33    maxItems: 1
34
35  iommus:
36    maxItems: 4
37
38  power-domains:
39    maxItems: 1
40
41  ceva,p0-cominit-params:
42    $ref: /schemas/types.yaml#/definitions/uint8-array
43    description: |
44      OOB timing value for COMINIT parameter for port 0.
45      The fields for the above parameter must be as shown below:-
46      ceva,p0-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>;
47    items:
48      - description: CINMP - COMINIT Negate Minimum Period.
49      - description: CIBGN - COMINIT Burst Gap Nominal.
50      - description: CIBGMX - COMINIT Burst Gap Maximum.
51      - description: CIBGMN - COMINIT Burst Gap Minimum.
52
53  ceva,p0-comwake-params:
54    $ref: /schemas/types.yaml#/definitions/uint8-array
55    description: |
56      OOB timing value for COMWAKE parameter for port 0.
57      The fields for the above parameter must be as shown below:-
58      ceva,p0-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>;
59    items:
60      - description: CWBGMN - COMWAKE Burst Gap Minimum.
61      - description: CWBGMX - COMWAKE Burst Gap Maximum.
62      - description: CWBGN - COMWAKE Burst Gap Nominal.
63      - description: CWNMP - COMWAKE Negate Minimum Period.
64
65  ceva,p0-burst-params:
66    $ref: /schemas/types.yaml#/definitions/uint8-array
67    description: |
68      Burst timing value for COM parameter for port 0.
69      The fields for the above parameter must be as shown below:-
70      ceva,p0-burst-params = /bits/ 8 <BMX BNM SFD PTST>;
71    items:
72      - description: BMX - COM Burst Maximum.
73      - description: BNM - COM Burst Nominal.
74      - description: SFD - Signal Failure Detection value.
75      - description: PTST - Partial to Slumber timer value.
76
77  ceva,p0-retry-params:
78    $ref: /schemas/types.yaml#/definitions/uint16-array
79    description: |
80      Retry interval timing value for port 0.
81      The fields for the above parameter must be as shown below:-
82      ceva,p0-retry-params = /bits/ 16 <RIT RCT>;
83    items:
84      - description: RIT - Retry Interval Timer.
85      - description: RCT - Rate Change Timer.
86
87  ceva,p1-cominit-params:
88    $ref: /schemas/types.yaml#/definitions/uint8-array
89    description: |
90      OOB timing value for COMINIT parameter for port 1.
91      The fields for the above parameter must be as shown below:-
92      ceva,p1-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>;
93    items:
94      - description: CINMP - COMINIT Negate Minimum Period.
95      - description: CIBGN - COMINIT Burst Gap Nominal.
96      - description: CIBGMX - COMINIT Burst Gap Maximum.
97      - description: CIBGMN - COMINIT Burst Gap Minimum.
98
99  ceva,p1-comwake-params:
100    $ref: /schemas/types.yaml#/definitions/uint8-array
101    description: |
102      OOB timing value for COMWAKE parameter for port 1.
103      The fields for the above parameter must be as shown below:-
104      ceva,p1-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>;
105    items:
106      - description: CWBGMN - COMWAKE Burst Gap Minimum.
107      - description: CWBGMX - COMWAKE Burst Gap Maximum.
108      - description: CWBGN - COMWAKE Burst Gap Nominal.
109      - description: CWNMP - COMWAKE Negate Minimum Period.
110
111  ceva,p1-burst-params:
112    $ref: /schemas/types.yaml#/definitions/uint8-array
113    description: |
114      Burst timing value for COM parameter for port 1.
115      The fields for the above parameter must be as shown below:-
116      ceva,p1-burst-params = /bits/ 8 <BMX BNM SFD PTST>;
117    items:
118      - description: BMX - COM Burst Maximum.
119      - description: BNM - COM Burst Nominal.
120      - description: SFD - Signal Failure Detection value.
121      - description: PTST - Partial to Slumber timer value.
122
123  ceva,p1-retry-params:
124    $ref: /schemas/types.yaml#/definitions/uint16-array
125    description: |
126      Retry interval timing value for port 1.
127      The fields for the above parameter must be as shown below:-
128      ceva,pN-retry-params = /bits/ 16 <RIT RCT>;
129    items:
130      - description: RIT - Retry Interval Timer.
131      - description: RCT - Rate Change Timer.
132
133  ceva,broken-gen2:
134    $ref: /schemas/types.yaml#/definitions/flag
135    description: |
136      limit to gen1 speed instead of gen2.
137
138  phys:
139    maxItems: 1
140
141  phy-names:
142    items:
143      - const: sata-phy
144
145  resets:
146    maxItems: 1
147
148required:
149  - compatible
150  - reg
151  - clocks
152  - interrupts
153  - ceva,p0-cominit-params
154  - ceva,p0-comwake-params
155  - ceva,p0-burst-params
156  - ceva,p0-retry-params
157  - ceva,p1-cominit-params
158  - ceva,p1-comwake-params
159  - ceva,p1-burst-params
160  - ceva,p1-retry-params
161
162additionalProperties: false
163
164examples:
165  - |
166    #include <dt-bindings/clock/xlnx-zynqmp-clk.h>
167    #include <dt-bindings/interrupt-controller/irq.h>
168    #include <dt-bindings/power/xlnx-zynqmp-power.h>
169    #include <dt-bindings/reset/xlnx-zynqmp-resets.h>
170    #include <dt-bindings/clock/xlnx-zynqmp-clk.h>
171    #include <dt-bindings/phy/phy.h>
172
173    sata: ahci@fd0c0000 {
174        compatible = "ceva,ahci-1v84";
175        reg = <0xfd0c0000 0x200>;
176        interrupt-parent = <&gic>;
177        interrupts = <0 133 IRQ_TYPE_LEVEL_HIGH>;
178        clocks = <&zynqmp_clk SATA_REF>;
179        ceva,p0-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
180        ceva,p0-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
181        ceva,p0-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
182        ceva,p0-retry-params = /bits/ 16 <0x0216 0x7F06>;
183        ceva,p1-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>;
184        ceva,p1-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>;
185        ceva,p1-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>;
186        ceva,p1-retry-params = /bits/ 16 <0x0216 0x7F06>;
187        ceva,broken-gen2;
188        phys = <&psgtr 1 PHY_TYPE_SATA 1 1>;
189        resets = <&zynqmp_reset ZYNQMP_RESET_SATA>;
190    };
191