1 # SPDX-License-Identifier: GPL-2.0-only
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iommu/rockc
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Rockchip IOMMU
8
9 maintainers:
10 - Heiko Stuebner <heiko@sntech.de>
11
12 description: |+
13 A Rockchip DRM iommu translates io virtual a
14 its master device. Each slave device is boun
15 shares its clocks, power domain and irq.
16
17 For information on assigning IOMMU controlle
18 see generic IOMMU bindings.
19
20 properties:
21 compatible:
22 oneOf:
23 - enum:
24 - rockchip,iommu
25 - rockchip,rk3568-iommu
26 - items:
27 - enum:
28 - rockchip,rk3588-iommu
29 - const: rockchip,rk3568-iommu
30
31 reg:
32 items:
33 - description: configuration registers f
34 - description: configuration registers f
35 minItems: 1
36
37 interrupts:
38 items:
39 - description: interruption for MMU inst
40 - description: interruption for MMU inst
41 minItems: 1
42
43 clocks:
44 items:
45 - description: Core clock
46 - description: Interface clock
47
48 clock-names:
49 items:
50 - const: aclk
51 - const: iface
52
53 "#iommu-cells":
54 const: 0
55
56 power-domains:
57 maxItems: 1
58
59 rockchip,disable-mmu-reset:
60 $ref: /schemas/types.yaml#/definitions/fla
61 description: |
62 Do not use the mmu reset operation.
63 Some mmu instances may produce unexpecte
64 when the reset operation is used.
65
66 required:
67 - compatible
68 - reg
69 - interrupts
70 - clocks
71 - clock-names
72 - "#iommu-cells"
73
74 additionalProperties: false
75
76 examples:
77 - |
78 #include <dt-bindings/clock/rk3399-cru.h>
79 #include <dt-bindings/interrupt-controller
80
81 vopl_mmu: iommu@ff940300 {
82 compatible = "rockchip,iommu";
83 reg = <0xff940300 0x100>;
84 interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_
85 clocks = <&cru ACLK_VOP1>, <&cru HCLK_VO
86 clock-names = "aclk", "iface";
87 #iommu-cells = <0>;
88 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.