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Date: Wed, 8 Feb 2023 11:15:44 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Jassi Brar <jassisinghbrar@...il.com>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Banajit Goswami <bgoswami@...cinc.com>,
Mark Brown <broonie@...nel.org>, linux-arm-msm@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-remoteproc@...r.kernel.org, alsa-devel@...a-project.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v2 6/7] 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@...aro.org>
---
Changes since v1:
1. :: -> :
2. Correct qcom,intents type.
There are no strict dependencies on other patches, but the previous
"qcom,apcs-kpss-global" should end up in the same cycle (or earlier) as
this one.
---
.../remoteproc/qcom,glink-rpm-edge.yaml | 99 +++++++++++++++++++
.../bindings/soc/qcom/qcom,glink.txt | 94 ------------------
2 files changed, 99 insertions(+), 94 deletions(-)
create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,glink-rpm-edge.yaml
delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,glink-rpm-edge.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,glink-rpm-edge.yaml
new file mode 100644
index 000000000000..f5a044e20c4e
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,glink-rpm-edge.yaml
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/qcom,glink-rpm-edge.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm G-Link RPM edge
+
+description: |
+ Qualcomm G-Link edge, a FIFO based mechanism for communication with Resource
+ Power Manager (RPM) on various Qualcomm platforms.
+
+maintainers:
+ - Bjorn Andersson <andersson@...nel.org>
+
+properties:
+ compatible:
+ const: qcom,glink-rpm
+
+ label:
+ $ref: /schemas/types.yaml#/definitions/string
+ description:
+ Name of the edge, used for debugging and identification purposes. The
+ node name will be used if this is not present.
+
+ interrupts:
+ maxItems: 1
+
+ mboxes:
+ items:
+ - description: rpm_hlos mailbox in APCS
+
+ qcom,remote-pid:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ The identifier for the remote processor as known by the rest of the
+ system.
+
+ qcom,rpm-msg-ram:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: |
+ RPM message memory resource (compatible: qcom,rpm-msg-ram).
+
+ rpm-requests:
+ type: object
+ $ref: /schemas/soc/qcom/qcom,smd-rpm.yaml#
+ unevaluatedProperties: false
+ description:
+ Qualcomm Resource Power Manager (RPM) over G-Link
+
+ properties:
+ qcom,intents:
+ $ref: /schemas/types.yaml#/definitions/uint32-matrix
+ minItems: 1
+ maxItems: 32
+ items:
+ items:
+ - description: size of each intent to preallocate
+ - description: amount of intents to preallocate
+ minimum: 1
+ description:
+ List of (size, amount) pairs describing what intents should be
+ preallocated for this virtual channel. This can be used to tweak the
+ default intents available for the channel to meet expectations of the
+ remote.
+
+ required:
+ - qcom,glink-channels
+
+required:
+ - compatible
+ - interrupts
+ - mboxes
+
+anyOf:
+ - required:
+ - qcom,remote-pid
+ - required:
+ - qcom,rpm-msg-ram
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ rpm-glink {
+ compatible = "qcom,glink-rpm";
+ interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
+ mboxes = <&apcs_glb 0>;
+ qcom,rpm-msg-ram = <&rpm_msg_ram>;
+
+ rpm-requests {
+ compatible = "qcom,rpm-msm8996";
+ qcom,glink-channels = "rpm_requests";
+
+ /* ... */
+ };
+ };
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
deleted file mode 100644
index 1214192847ac..000000000000
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
+++ /dev/null
@@ -1,94 +0,0 @@
-Qualcomm GLINK edge binding
-
-This binding describes a Qualcomm GLINK edge, a fifo based mechanism for
-communication between subsystem-pairs on various Qualcomm platforms. Two types
-of edges can be described by the binding; the GLINK RPM edge and a SMEM based
-edge.
-
-- compatible:
- Usage: required for glink-rpm
- Value type: <stringlist>
- Definition: must be "qcom,glink-rpm"
-
-- label:
- Usage: optional
- Value type: <string>
- Definition: should specify the subsystem name this edge corresponds to.
-
-- interrupts:
- Usage: required
- Value type: <prop-encoded-array>
- Definition: should specify the IRQ used by the remote processor to
- signal this processor about communication related events
-
-- qcom,remote-pid:
- Usage: required for glink-smem
- Value type: <u32>
- Definition: specifies the identifier of the remote endpoint of this edge
-
-- qcom,rpm-msg-ram:
- Usage: required for glink-rpm
- Value type: <prop-encoded-array>
- Definition: handle to RPM message memory resource
-
-- mboxes:
- Usage: required
- Value type: <prop-encoded-array>
- Definition: reference to the "rpm_hlos" mailbox in APCS, as described
- in mailbox/mailbox.txt
-
-= GLINK DEVICES
-Each subnode of the GLINK node represent function tied to a virtual
-communication channel. The name of the nodes are not important. The properties
-of these nodes are defined by the individual bindings for the specific function
-- but must contain the following property:
-
-- qcom,glink-channels:
- Usage: required
- Value type: <stringlist>
- Definition: a list of channels tied to this function, used for matching
- the function to a set of virtual channels
-
-- qcom,intents:
- Usage: optional
- Value type: <prop-encoded-array>
- Definition: a list of size,amount pairs describing what intents should
- be preallocated for this virtual channel. This can be used
- to tweak the default intents available for the channel to
- meet expectations of the remote.
-
-= EXAMPLE
-The following example represents the GLINK RPM node on a MSM8996 device, with
-the function for the "rpm_request" channel defined, which is used for
-regulators and root clocks.
-
- apcs_glb: mailbox@...0000 {
- compatible = "qcom,msm8996-apcs-hmss-global";
- reg = <0x9820000 0x1000>;
-
- #mbox-cells = <1>;
- };
-
- rpm_msg_ram: memory@...00 {
- compatible = "qcom,rpm-msg-ram";
- reg = <0x68000 0x6000>;
- };
-
- rpm-glink {
- compatible = "qcom,glink-rpm";
-
- interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
-
- qcom,rpm-msg-ram = <&rpm_msg_ram>;
-
- mboxes = <&apcs_glb 0>;
-
- rpm-requests {
- compatible = "qcom,rpm-msm8996";
- qcom,glink-channels = "rpm_requests";
-
- qcom,intents = <0x400 5
- 0x800 1>;
- ...
- };
- };
--
2.34.1
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