| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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,bam-dma.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Qualcomm Technologies Inc BAM DMA controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Andy Gross <agross@kernel.org> |
| 11 | - Bjorn Andersson <andersson@kernel.org> |
| 12 | |
| 13 | allOf: |
| 14 | - $ref: dma-controller.yaml# |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | oneOf: |
| 19 | - enum: |
| 20 | # APQ8064, IPQ8064 and MSM8960 |
| 21 | - qcom,bam-v1.3.0 |
| 22 | # MSM8974, APQ8074 and APQ8084 |
| 23 | - qcom,bam-v1.4.0 |
| 24 | # MSM8916, SDM630 |
| 25 | - qcom,bam-v1.7.0 |
| 26 | - items: |
| 27 | - enum: |
| 28 | # SDM845, SM6115, SM8150, SM8250 and QCM2290 |
| 29 | - qcom,bam-v1.7.4 |
| 30 | - const: qcom,bam-v1.7.0 |
| 31 | |
| 32 | clocks: |
| 33 | maxItems: 1 |
| 34 | |
| 35 | clock-names: |
| 36 | items: |
| 37 | - const: bam_clk |
| 38 | |
| 39 | "#dma-cells": |
| 40 | const: 1 |
| 41 | |
| 42 | interrupts: |
| 43 | maxItems: 1 |
| 44 | |
| 45 | iommus: |
| 46 | minItems: 1 |
| 47 | maxItems: 6 |
| 48 | |
| 49 | num-channels: |
| 50 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 51 | description: |
| 52 | Indicates supported number of DMA channels in a remotely controlled bam. |
| 53 | |
| 54 | qcom,controlled-remotely: |
| 55 | type: boolean |
| 56 | description: |
| 57 | Indicates that the bam is controlled by remote processor i.e. execution |
| 58 | environment. |
| 59 | |
| 60 | qcom,ee: |
| 61 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 62 | minimum: 0 |
| 63 | maximum: 7 |
| 64 | description: |
| 65 | Indicates the active Execution Environment identifier (0-7) used in the |
| 66 | secure world. |
| 67 | |
| 68 | qcom,num-ees: |
| 69 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 70 | description: |
| 71 | Indicates supported number of Execution Environments in a remotely |
| 72 | controlled bam. |
| 73 | |
| 74 | qcom,powered-remotely: |
| 75 | type: boolean |
| 76 | description: |
| 77 | Indicates that the bam is powered up by a remote processor but must be |
| 78 | initialized by the local processor. |
| 79 | |
| 80 | reg: |
| 81 | maxItems: 1 |
| 82 | |
| 83 | required: |
| 84 | - compatible |
| 85 | - "#dma-cells" |
| 86 | - interrupts |
| 87 | - qcom,ee |
| 88 | - reg |
| 89 | |
| 90 | anyOf: |
| 91 | - required: |
| 92 | - qcom,powered-remotely |
| 93 | - required: |
| 94 | - qcom,controlled-remotely |
| 95 | - required: |
| 96 | - clocks |
| 97 | - clock-names |
| 98 | |
| 99 | additionalProperties: false |
| 100 | |
| 101 | examples: |
| 102 | - | |
| 103 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 104 | #include <dt-bindings/clock/qcom,gcc-msm8974.h> |
| 105 | |
| 106 | dma-controller@f9944000 { |
| 107 | compatible = "qcom,bam-v1.4.0"; |
| 108 | reg = <0xf9944000 0x19000>; |
| 109 | interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH>; |
| 110 | clocks = <&gcc GCC_BLSP2_AHB_CLK>; |
| 111 | clock-names = "bam_clk"; |
| 112 | #dma-cells = <1>; |
| 113 | qcom,ee = <0>; |
| 114 | }; |
| 115 | ... |