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 7title: Qualcomm Technologies Inc BAM DMA controller 8 9maintainers: 10 - Andy Gross <agross@kernel.org> 11 - Bjorn Andersson <andersson@kernel.org> 12 13allOf: 14 - $ref: dma-controller.yaml# 15 16properties: 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 proccessor 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 83required: 84 - compatible 85 - "#dma-cells" 86 - interrupts 87 - qcom,ee 88 - reg 89 90additionalProperties: false 91 92examples: 93 - | 94 #include <dt-bindings/interrupt-controller/arm-gic.h> 95 #include <dt-bindings/clock/qcom,gcc-msm8974.h> 96 97 dma-controller@f9944000 { 98 compatible = "qcom,bam-v1.4.0"; 99 reg = <0xf9944000 0x19000>; 100 interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH>; 101 clocks = <&gcc GCC_BLSP2_AHB_CLK>; 102 clock-names = "bam_clk"; 103 #dma-cells = <1>; 104 qcom,ee = <0>; 105 }; 106... 107