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Diffstat (limited to 'Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml new file mode 100644 index 0000000000..3ad0d9b1fb --- /dev/null +++ b/Documentation/devicetree/bindings/dma/qcom,bam-dma.yaml @@ -0,0 +1,115 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/dma/qcom,bam-dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies Inc BAM DMA controller + +maintainers: + - Andy Gross <agross@kernel.org> + - Bjorn Andersson <andersson@kernel.org> + +allOf: + - $ref: dma-controller.yaml# + +properties: + compatible: + oneOf: + - enum: + # APQ8064, IPQ8064 and MSM8960 + - qcom,bam-v1.3.0 + # MSM8974, APQ8074 and APQ8084 + - qcom,bam-v1.4.0 + # MSM8916, SDM630 + - qcom,bam-v1.7.0 + - items: + - enum: + # SDM845, SM6115, SM8150, SM8250 and QCM2290 + - qcom,bam-v1.7.4 + - const: qcom,bam-v1.7.0 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: bam_clk + + "#dma-cells": + const: 1 + + interrupts: + maxItems: 1 + + iommus: + minItems: 1 + maxItems: 6 + + num-channels: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Indicates supported number of DMA channels in a remotely controlled bam. + + qcom,controlled-remotely: + type: boolean + description: + Indicates that the bam is controlled by remote processor i.e. execution + environment. + + qcom,ee: + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 7 + description: + Indicates the active Execution Environment identifier (0-7) used in the + secure world. + + qcom,num-ees: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Indicates supported number of Execution Environments in a remotely + controlled bam. + + qcom,powered-remotely: + type: boolean + description: + Indicates that the bam is powered up by a remote processor but must be + initialized by the local processor. + + reg: + maxItems: 1 + +required: + - compatible + - "#dma-cells" + - interrupts + - qcom,ee + - reg + +anyOf: + - required: + - qcom,powered-remotely + - required: + - qcom,controlled-remotely + - required: + - clocks + - clock-names + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/qcom,gcc-msm8974.h> + + dma-controller@f9944000 { + compatible = "qcom,bam-v1.4.0"; + reg = <0xf9944000 0x19000>; + interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&gcc GCC_BLSP2_AHB_CLK>; + clock-names = "bam_clk"; + #dma-cells = <1>; + qcom,ee = <0>; + }; +... |