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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/qcom,gpi.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm Technologies Inc GPI DMA controller
maintainers:
- Vinod Koul <vkoul@kernel.org>
description: |
QCOM GPI DMA controller provides DMA capabilities for
peripheral buses such as I2C, UART, and SPI.
allOf:
- $ref: "dma-controller.yaml#"
properties:
compatible:
enum:
- qcom,sdm845-gpi-dma
reg:
maxItems: 1
interrupts:
description:
Interrupt lines for each GPI instance
maxItems: 13
"#dma-cells":
const: 3
description: >
DMA clients must use the format described in dma.txt, giving a phandle
to the DMA controller plus the following 3 integer cells:
- channel: if set to 0xffffffff, any available channel will be allocated
for the client. Otherwise, the exact channel specified will be used.
- seid: serial id of the client as defined in the SoC documentation.
- client: type of the client as defined in dt-bindings/dma/qcom-gpi.h
iommus:
maxItems: 1
dma-channels:
maximum: 31
dma-channel-mask:
maxItems: 1
required:
- compatible
- reg
- interrupts
- "#dma-cells"
- iommus
- dma-channels
- dma-channel-mask
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/dma/qcom-gpi.h>
gpi_dma0: dma-controller@800000 {
compatible = "qcom,gpi-dma";
#dma-cells = <3>;
reg = <0x00800000 0x60000>;
iommus = <&apps_smmu 0x0016 0x0>;
dma-channels = <13>;
dma-channel-mask = <0xfa>;
interrupts = <GIC_SPI 244 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 246 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 247 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 249 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 250 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 252 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 253 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 254 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 255 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>;
};
...
|
