netdev - [PATCH 1/3] dt-bindings: sram: qcom,imem: Allow modem-tables

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Message-Id: <20250523-topic-ipa_imem-v1-1-b5d536291c7f@oss.qualcomm.com>
Date: Fri, 23 May 2025 01:08:32 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Alex Elder <elder@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH 1/3] dt-bindings: sram: qcom,imem: Allow modem-tables

From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

The IP Accelerator hardware/firmware owns a sizeable region within the
IMEM, ominously named 'modem-tables', presumably having to do with some
internal IPA-modem specifics.

It's not actually accessed by the OS, although we have to IOMMU-map it
with the IPA device, so that presumably the firmware can act upon it.

Allow it as a subnode of IMEM.

Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 Documentation/devicetree/bindings/sram/qcom,imem.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/sram/qcom,imem.yaml b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
index 2711f90d9664b70fcd1e2f7e2dfd3386ed5c1952..7c882819222dc04190db357ac6f9a3a35137cc9e 100644
--- a/Documentation/devicetree/bindings/sram/qcom,imem.yaml
+++ b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
@@ -51,6 +51,9 @@ properties:
     $ref: /schemas/power/reset/syscon-reboot-mode.yaml#

 patternProperties:
+  "^modem-tables@[0-9a-f]+$":
+    description: Region reserved for the IP Accelerator
+
   "^pil-reloc@[0-9a-f]+$":
     $ref: /schemas/remoteproc/qcom,pil-info.yaml#
     description: Peripheral image loader relocation region

-- 
2.49.0