linux-kernel - [PATCH 07/14] dt-bindings: qcom: smd: Mark as deprecated

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Message-Id: <20230531-rpm-rproc-v1-7-e0a3b6de1f14@gerhold.net>
Date:   Mon, 05 Jun 2023 09:08:23 +0200
From:   Stephan Gerhold <stephan@...hold.net>
To:     Bjorn Andersson <andersson@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-remoteproc@...r.kernel.org,
        Stephan Gerhold <stephan@...hold.net>
Subject: [PATCH 07/14] dt-bindings: qcom: smd: Mark as deprecated

The RPM processor/subsystem is the only user of the /smd top-level
node. All other remote processors define their SMD channels/edges
in a "smd-edge" subnode inside the DT node of the remote processor.

Since the RPM has its own dedicated device tree node now as well,
deprecate using the dummy /smd node.

Signed-off-by: Stephan Gerhold <stephan@...hold.net>
---
 Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml
index 063e595c12f7..4819ce90d206 100644
--- a/Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smd.yaml
@@ -15,6 +15,12 @@ description:
   The Qualcomm Shared Memory Driver is a FIFO based communication channel for
   sending data between the various subsystems in Qualcomm platforms.
 
+  Using the top-level SMD node is deprecated. Instead, the SMD edges are defined
+  directly below the device node representing the respective remote subsystem
+  or remote processor.
+
+deprecated: true
+
 properties:
   compatible:
     const: qcom,smd
@@ -37,6 +43,7 @@ examples:
   # The following example represents a smd node, with one edge representing the
   # "rpm" subsystem. For the "rpm" subsystem we have a device tied to the
   # "rpm_request" channel.
+  # NOTE: This is deprecated, represent the RPM using "qcom,rpm-proc" instead.
   - |
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 

-- 
2.40.1