1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright (C) 2020 SiFive, Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/riscv/sifive-l2-cache.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: SiFive L2 Cache Controller
maintainers:
- Sagar Kadam <sagar.kadam@sifive.com>
- Yash Shah <yash.shah@sifive.com>
- Paul Walmsley <paul.walmsley@sifive.com>
description:
The SiFive Level 2 Cache Controller is used to provide access to fast copies
of memory for masters in a Core Complex. The Level 2 Cache Controller also
acts as directory-based coherency manager.
All the properties in ePAPR/DeviceTree specification applies for this platform.
allOf:
- $ref: /schemas/cache-controller.yaml#
select:
properties:
compatible:
items:
- enum:
- sifive,fu540-c000-ccache
- sifive,fu740-c000-ccache
required:
- compatible
properties:
compatible:
items:
- enum:
- sifive,fu540-c000-ccache
- sifive,fu740-c000-ccache
- const: cache
cache-block-size:
const: 64
cache-level:
const: 2
cache-sets:
const: 1024
cache-size:
const: 2097152
cache-unified: true
interrupts:
minItems: 3
items:
- description: DirError interrupt
- description: DataError interrupt
- description: DataFail interrupt
- description: DirFail interrupt
reg:
maxItems: 1
next-level-cache: true
memory-region:
maxItems: 1
description: |
The reference to the reserved-memory for the L2 Loosely Integrated Memory region.
The reserved memory node should be defined as per the bindings in reserved-memory.txt.
if:
properties:
compatible:
contains:
const: sifive,fu540-c000-ccache
then:
properties:
interrupts:
description: |
Must contain entries for DirError, DataError and DataFail signals.
maxItems: 3
else:
properties:
interrupts:
description: |
Must contain entries for DirError, DataError, DataFail, DirFail signals.
minItems: 4
additionalProperties: false
required:
- compatible
- cache-block-size
- cache-level
- cache-sets
- cache-size
- cache-unified
- interrupts
- reg
examples:
- |
cache-controller@2010000 {
compatible = "sifive,fu540-c000-ccache", "cache";
cache-block-size = <64>;
cache-level = <2>;
cache-sets = <1024>;
cache-size = <2097152>;
cache-unified;
reg = <0x2010000 0x1000>;
interrupt-parent = <&plic0>;
interrupts = <1>,
<2>,
<3>;
next-level-cache = <&L25>;
memory-region = <&l2_lim>;
};
|
