tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/dma/qcom,gpi.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Qualcomm Technologies Inc GPI DMA controller
8
9maintainers:
10 - Vinod Koul <vkoul@kernel.org>
11
12description: |
13 QCOM GPI DMA controller provides DMA capabilities for
14 peripheral buses such as I2C, UART, and SPI.
15
16allOf:
17 - $ref: dma-controller.yaml#
18
19properties:
20 compatible:
21 oneOf:
22 - enum:
23 - qcom,sdm845-gpi-dma
24 - qcom,sm6350-gpi-dma
25 - items:
26 - enum:
27 - qcom,qdu1000-gpi-dma
28 - qcom,sc7280-gpi-dma
29 - qcom,sm6115-gpi-dma
30 - qcom,sm6375-gpi-dma
31 - qcom,sm8350-gpi-dma
32 - qcom,sm8450-gpi-dma
33 - qcom,sm8550-gpi-dma
34 - const: qcom,sm6350-gpi-dma
35 - items:
36 - enum:
37 - qcom,sdm670-gpi-dma
38 - qcom,sm6125-gpi-dma
39 - qcom,sm8150-gpi-dma
40 - qcom,sm8250-gpi-dma
41 - const: qcom,sdm845-gpi-dma
42
43 reg:
44 maxItems: 1
45
46 interrupts:
47 description:
48 Interrupt lines for each GPI instance
49 minItems: 1
50 maxItems: 13
51
52 "#dma-cells":
53 const: 3
54 description: >
55 DMA clients must use the format described in dma.txt, giving a phandle
56 to the DMA controller plus the following 3 integer cells:
57 - channel: if set to 0xffffffff, any available channel will be allocated
58 for the client. Otherwise, the exact channel specified will be used.
59 - seid: serial id of the client as defined in the SoC documentation.
60 - client: type of the client as defined in dt-bindings/dma/qcom-gpi.h
61
62 iommus:
63 maxItems: 1
64
65 dma-channels:
66 maximum: 31
67
68 dma-channel-mask:
69 maxItems: 1
70
71required:
72 - compatible
73 - reg
74 - interrupts
75 - "#dma-cells"
76 - iommus
77 - dma-channels
78 - dma-channel-mask
79
80additionalProperties: false
81
82examples:
83 - |
84 #include <dt-bindings/interrupt-controller/arm-gic.h>
85 #include <dt-bindings/dma/qcom-gpi.h>
86 gpi_dma0: dma-controller@800000 {
87 compatible = "qcom,sdm845-gpi-dma";
88 #dma-cells = <3>;
89 reg = <0x00800000 0x60000>;
90 iommus = <&apps_smmu 0x0016 0x0>;
91 dma-channels = <13>;
92 dma-channel-mask = <0xfa>;
93 interrupts = <GIC_SPI 244 IRQ_TYPE_LEVEL_HIGH>,
94 <GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>,
95 <GIC_SPI 246 IRQ_TYPE_LEVEL_HIGH>,
96 <GIC_SPI 247 IRQ_TYPE_LEVEL_HIGH>,
97 <GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>,
98 <GIC_SPI 249 IRQ_TYPE_LEVEL_HIGH>,
99 <GIC_SPI 250 IRQ_TYPE_LEVEL_HIGH>,
100 <GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH>,
101 <GIC_SPI 252 IRQ_TYPE_LEVEL_HIGH>,
102 <GIC_SPI 253 IRQ_TYPE_LEVEL_HIGH>,
103 <GIC_SPI 254 IRQ_TYPE_LEVEL_HIGH>,
104 <GIC_SPI 255 IRQ_TYPE_LEVEL_HIGH>,
105 <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>;
106 };
107
108...