dt-bindings: remoteproc: qcom,glink-rpm-edge: convert to DT schema
Convert Qualcomm G-Link RPM edge binding to DT schema. Move it to remoteproc as it better suits the purpose - communication channel with remote processor. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Krzysztof Kozlowski
Jassi Brar
parent
adb239f340
commit
b114f13591
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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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$id: http://devicetree.org/schemas/remoteproc/qcom,glink-rpm-edge.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm G-Link RPM edge
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description: |
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Qualcomm G-Link edge, a FIFO based mechanism for communication with Resource
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Power Manager (RPM) on various Qualcomm platforms.
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maintainers:
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- Bjorn Andersson <andersson@kernel.org>
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properties:
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compatible:
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const: qcom,glink-rpm
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label:
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$ref: /schemas/types.yaml#/definitions/string
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description:
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Name of the edge, used for debugging and identification purposes. The
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node name will be used if this is not present.
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interrupts:
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maxItems: 1
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mboxes:
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items:
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- description: rpm_hlos mailbox in APCS
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qcom,remote-pid:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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The identifier for the remote processor as known by the rest of the
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system.
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qcom,rpm-msg-ram:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: |
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RPM message memory resource (compatible: qcom,rpm-msg-ram).
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rpm-requests:
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type: object
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$ref: /schemas/soc/qcom/qcom,smd-rpm.yaml#
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unevaluatedProperties: false
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description:
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Qualcomm Resource Power Manager (RPM) over G-Link
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properties:
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qcom,intents:
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$ref: /schemas/types.yaml#/definitions/uint32-matrix
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minItems: 1
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maxItems: 32
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items:
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items:
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- description: size of each intent to preallocate
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- description: amount of intents to preallocate
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minimum: 1
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description:
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List of (size, amount) pairs describing what intents should be
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preallocated for this virtual channel. This can be used to tweak the
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default intents available for the channel to meet expectations of the
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remote.
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required:
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- qcom,glink-channels
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required:
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- compatible
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- interrupts
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- mboxes
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anyOf:
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- required:
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- qcom,remote-pid
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- required:
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- qcom,rpm-msg-ram
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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rpm-glink {
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compatible = "qcom,glink-rpm";
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interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
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mboxes = <&apcs_glb 0>;
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qcom,rpm-msg-ram = <&rpm_msg_ram>;
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rpm-requests {
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compatible = "qcom,rpm-msm8996";
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qcom,glink-channels = "rpm_requests";
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/* ... */
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};
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};
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@ -1,94 +0,0 @@
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Qualcomm GLINK edge binding
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This binding describes a Qualcomm GLINK edge, a fifo based mechanism for
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communication between subsystem-pairs on various Qualcomm platforms. Two types
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of edges can be described by the binding; the GLINK RPM edge and a SMEM based
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edge.
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- compatible:
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Usage: required for glink-rpm
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Value type: <stringlist>
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Definition: must be "qcom,glink-rpm"
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- label:
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Usage: optional
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Value type: <string>
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Definition: should specify the subsystem name this edge corresponds to.
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- interrupts:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: should specify the IRQ used by the remote processor to
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signal this processor about communication related events
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- qcom,remote-pid:
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Usage: required for glink-smem
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Value type: <u32>
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Definition: specifies the identifier of the remote endpoint of this edge
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- qcom,rpm-msg-ram:
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Usage: required for glink-rpm
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Value type: <prop-encoded-array>
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Definition: handle to RPM message memory resource
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- mboxes:
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Usage: required
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Value type: <prop-encoded-array>
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Definition: reference to the "rpm_hlos" mailbox in APCS, as described
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in mailbox/mailbox.txt
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= GLINK DEVICES
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Each subnode of the GLINK node represent function tied to a virtual
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communication channel. The name of the nodes are not important. The properties
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of these nodes are defined by the individual bindings for the specific function
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- but must contain the following property:
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- qcom,glink-channels:
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Usage: required
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Value type: <stringlist>
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Definition: a list of channels tied to this function, used for matching
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the function to a set of virtual channels
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- qcom,intents:
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Usage: optional
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Value type: <prop-encoded-array>
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Definition: a list of size,amount pairs describing what intents should
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be preallocated for this virtual channel. This can be used
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to tweak the default intents available for the channel to
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meet expectations of the remote.
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= EXAMPLE
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The following example represents the GLINK RPM node on a MSM8996 device, with
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the function for the "rpm_request" channel defined, which is used for
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regulators and root clocks.
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apcs_glb: mailbox@9820000 {
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compatible = "qcom,msm8996-apcs-hmss-global";
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reg = <0x9820000 0x1000>;
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#mbox-cells = <1>;
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};
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rpm_msg_ram: memory@68000 {
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compatible = "qcom,rpm-msg-ram";
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reg = <0x68000 0x6000>;
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};
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rpm-glink {
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compatible = "qcom,glink-rpm";
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interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
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qcom,rpm-msg-ram = <&rpm_msg_ram>;
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mboxes = <&apcs_glb 0>;
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rpm-requests {
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compatible = "qcom,rpm-msm8996";
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qcom,glink-channels = "rpm_requests";
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qcom,intents = <0x400 5
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0x800 1>;
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...
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};
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};
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