xref: /linux/Documentation/devicetree/bindings/sram/qcom,ocmem.yaml (revision 02680c23d7b3febe45ea3d4f9818c2b2dc89020a) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sram/qcom,ocmem.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: On Chip Memory (OCMEM) that is present on some Qualcomm Snapdragon SoCs.
8
9maintainers:
10  - Brian Masney <masneyb@onstation.org>
11
12description: |
13  The On Chip Memory (OCMEM) is typically used by the GPU, camera/video, and
14  audio components on some Snapdragon SoCs.
15
16properties:
17  compatible:
18    const: qcom,msm8974-ocmem
19
20  reg:
21    items:
22      - description: Control registers
23      - description: OCMEM address range
24
25  reg-names:
26    items:
27      - const: ctrl
28      - const: mem
29
30  clocks:
31    items:
32      - description: Core clock
33      - description: Interface clock
34
35  clock-names:
36    items:
37      - const: core
38      - const: iface
39
40  '#address-cells':
41    const: 1
42
43  '#size-cells':
44    const: 1
45
46  ranges:
47    maxItems: 1
48
49required:
50  - compatible
51  - reg
52  - reg-names
53  - clocks
54  - clock-names
55  - '#address-cells'
56  - '#size-cells'
57  - ranges
58
59additionalProperties: false
60
61patternProperties:
62  "-sram@[0-9a-f]+$":
63    type: object
64    description: A region of reserved memory.
65
66    properties:
67      reg:
68        maxItems: 1
69
70    required:
71      - reg
72
73examples:
74  - |
75      #include <dt-bindings/clock/qcom,rpmcc.h>
76      #include <dt-bindings/clock/qcom,mmcc-msm8974.h>
77
78      ocmem: ocmem@fdd00000 {
79        compatible = "qcom,msm8974-ocmem";
80
81        reg = <0xfdd00000 0x2000>,
82              <0xfec00000 0x180000>;
83        reg-names = "ctrl",
84                    "mem";
85
86        clocks = <&rpmcc RPM_SMD_OCMEMGX_CLK>,
87                 <&mmcc OCMEMCX_OCMEMNOC_CLK>;
88        clock-names = "core",
89                      "iface";
90
91        #address-cells = <1>;
92        #size-cells = <1>;
93        ranges = <0 0xfec00000 0x100000>;
94
95        gmu-sram@0 {
96                reg = <0x0 0x100000>;
97        };
98      };
99