linux-kernel - [PATCH] dt-bindings: net: qcom,ipa: make imem interconnect optional

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Message-Id: <20210804131349.1179832-1-elder@linaro.org>
Date:   Wed,  4 Aug 2021 08:13:49 -0500
From:   Alex Elder <elder@...aro.org>
To:     robh+dt@...nel.org, bjorn.andersson@...aro.org, agross@...nel.org
Cc:     elder@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: net: qcom,ipa: make imem interconnect optional

On some newer SoCs, the interconnect between IPA and SoC internal
memory (imem) is not used.  Update the binding to indicate that
having just the memory and config interconnects is another allowed
configuration.

Signed-off-by: Alex Elder <elder@...aro.org>
---
Rob, Bjorn, Andy:

This was posted as part of a small series once before, and accepted
into the net-next/master branch by David Miller:
  https://lore.kernel.org/netdev/20210719212456.3176086-1-elder@linaro.org/

That series got reverted yesterday:
  https://lore.kernel.org/netdev/20210802233019.800250-1-elder@linaro.org/

Now I'm posting this patch again (by itself, and a little different
this time based on input from Rob) so that this patch can be taken
through the Qualcomm repository.  I will be posting other updates to
DTS files in a separate series shortly.

I didn't copy networking addressees this time...

					-Alex

 .../devicetree/bindings/net/qcom,ipa.yaml     | 24 ++++++++++++-------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/qcom,ipa.yaml b/Documentation/devicetree/bindings/net/qcom,ipa.yaml
index ed88ba4b94df5..b8a0b392b24ea 100644
--- a/Documentation/devicetree/bindings/net/qcom,ipa.yaml
+++ b/Documentation/devicetree/bindings/net/qcom,ipa.yaml
@@ -87,16 +87,24 @@ properties:
       - const: ipa-setup-ready
 
   interconnects:
-    items:
-      - description: Interconnect path between IPA and main memory
-      - description: Interconnect path between IPA and internal memory
-      - description: Interconnect path between IPA and the AP subsystem
+    oneOf:
+      - items:
+          - description: Path leading to system memory
+          - description: Path between the AP and IPA config space
+      - items:
+          - description: Path leading to system memory
+          - description: Path leading to internal memory
+          - description: Path between the AP and IPA config space
 
   interconnect-names:
-    items:
-      - const: memory
-      - const: imem
-      - const: config
+    oneOf:
+      - items:
+          - const: memory
+          - const: config
+      - items:
+          - const: memory
+          - const: imem
+          - const: config
 
   qcom,smem-states:
     $ref: /schemas/types.yaml#/definitions/phandle-array
-- 
2.27.0