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Message-Id: <20220424135609.22388-1-david@ixit.cz>
Date: Sun, 24 Apr 2022 15:56:08 +0200
From: David Heidelberg <david@...t.cz>
To: Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: David Heidelberg <david@...t.cz>, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] WIP: dt-bindings: soc: qcom: convert GLINK binding to yaml
Convert Qualcomm GLINK binding to the yaml format.
Signed-off-by: David Heidelberg <david@...t.cz>
---
v2:
- fix multiple issues
- V2 is JUST a placeholder until I get back to it! Do NOT review yet.
---
.../bindings/soc/qcom/qcom,glink.txt | 94 ------------------
.../bindings/soc/qcom/qcom,glink.yaml | 96 +++++++++++++++++++
2 files changed, 96 insertions(+), 94 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt
create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,glink.yaml
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>;
- ...
- };
- };
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.yaml
new file mode 100644
index 000000000000..ea6b18bdf289
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/qcom/qcom,glink.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm GLINK edge
+
+description: |
+ 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.
+
+maintainers:
+ - Bjorn Andersson <bjorn.andersson@...aro.org>
+
+properties:
+ $nodename:
+ pattern: "^(rpm-)?glink(-edge)?$"
+
+ compatible:
+ const: qcom,glink-rpm
+
+ label:
+ $ref: /schemas/types.yaml#/definitions/string
+ description: name ofthe subsystem this edge corresponds to
+
+ interrupts:
+ description:
+ should specify the IRQ used by the remote processor to
+ signal this processor about communication related events
+ maxItems: 1
+
+ mboxes:
+ description: reference to the "rpm_hlos" mailbox in APCS
+
+ qcom,remote-pid:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: specifies the identifier of the remote endpoint of this edge
+
+ qcom,rpm-msg-ram:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: RPM message memory resource
+
+additionalProperties:
+ type: object
+ properties:
+ qcom,glink-channels:
+ $ref: /schemas/types.yaml#/definitions/string
+ description:
+ a list of channels tied to this function, used for matching
+ the function to a set of virtual channels
+
+ qcom,intents:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description:
+ 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
+
+ required:
+ - qcom,glink-channels
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - interrupts
+ - mboxes
+
+anyOf:
+ - required:
+ - qcom,remote-pid
+ - required:
+ - qcom,rpm-msg-ram
+
+examples:
+ # 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.
+ - |
+ rpm-glink {
+ compatible = "qcom,glink-rpm";
+ interrupts = <0 168 1>;
+ 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>;
+ };
+ };
--
2.35.1
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