1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4
5 $id: http://devicetree.org/schemas/iommu/qcom,apq8064-iommu.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
7
8 title: Qualcomm APQ8064 IOMMU
9
10 maintainers:
11 - David Heidelberg <david@ixit.cz>
12
13 description:
14 The MSM IOMMU is an implementation compatible with the ARM VMSA short
15 descriptor page tables. It provides address translation for bus masters
16 outside of the CPU, each connected to the IOMMU through a port called micro-TLB.
17
18 properties:
19 compatible:
20 const: qcom,apq8064-iommu
21
22 clocks:
23 items:
24 - description: interface clock for register accesses
25 - description: functional clock for bus accesses
26
27 clock-names:
28 items:
29 - const: smmu_pclk
30 - const: iommu_clk
31
32 reg:
33 maxItems: 1
34
35 interrupts:
36 description: Specifiers for the MMU fault interrupts.
37 minItems: 1
38 items:
39 - description: non-secure mode interrupt
40 - description: secure mode interrupt (for instances which supports it)
41
42 "#iommu-cells":
43 const: 1
44 description: Each IOMMU specifier describes a single Stream ID.
45
46 qcom,ncb:
47 $ref: /schemas/types.yaml#/definitions/uint32
48 description: The total number of context banks in the IOMMU.
49 minimum: 1
50 maximum: 4
51
52 required:
53 - reg
54 - interrupts
55 - clocks
56 - clock-names
57 - qcom,ncb
58
59 additionalProperties: false
60
61 examples:
62 - |
63 #include <dt-bindings/clock/qcom,mmcc-msm8960.h>
64 #include <dt-bindings/interrupt-controller/irq.h>
65 #include <dt-bindings/interrupt-controller/arm-gic.h>
66
67 iommu@7500000 {
68 compatible = "qcom,apq8064-iommu";
69 reg = <0x07500000 0x100000>;
70 interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>,
71 <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
72 clocks = <&clk SMMU_AHB_CLK>,
73 <&clk MDP_AXI_CLK>;
74 clock-names = "smmu_pclk",
75 "iommu_clk";
76 #iommu-cells = <1>;
77 qcom,ncb = <2>;
78 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.