63 lines
1.7 KiB
YAML
63 lines
1.7 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/soc/qcom/qcom,smd.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Shared Memory Driver
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maintainers:
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- Andy Gross <agross@kernel.org>
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- Bjorn Andersson <bjorn.andersson@linaro.org>
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- Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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description:
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The Qualcomm Shared Memory Driver is a FIFO based communication channel for
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sending data between the various subsystems in Qualcomm platforms.
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properties:
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compatible:
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const: qcom,smd
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patternProperties:
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"^smd-edge|rpm$":
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$ref: /schemas/remoteproc/qcom,smd-edge.yaml#
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unevaluatedProperties: false
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description:
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Each subnode of the SMD node represents a remote subsystem or a remote
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processor of some sort - or in SMD language an "edge". The name of the
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edges are not important.
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required:
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- compatible
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additionalProperties: false
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examples:
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# The following example represents a smd node, with one edge representing the
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# "rpm" subsystem. For the "rpm" subsystem we have a device tied to the
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# "rpm_request" channel.
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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shared-memory {
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compatible = "qcom,smd";
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rpm {
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interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
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qcom,ipc = <&apcs 8 0>;
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qcom,smd-edge = <15>;
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rpm-requests {
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compatible = "qcom,rpm-msm8974";
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qcom,smd-channels = "rpm_requests";
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clock-controller {
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compatible = "qcom,rpmcc-msm8974", "qcom,rpmcc";
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#clock-cells = <1>;
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};
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};
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};
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};
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