linux-kernel - [PATCH v5 1/4] dt-bindings: misc: qcom,fastrpc: Add compatible for Kaanapali

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Message-Id: <20251202060628.1869967-2-kumari.pallavi@oss.qualcomm.com>
Date: Tue,  2 Dec 2025 11:36:25 +0530
From: Kumari Pallavi <kumari.pallavi@....qualcomm.com>
To: kpallavi@....qualcomm.com, srini@...nel.org, amahesh@....qualcomm.com,
        arnd@...db.de, gregkh@...uxfoundation.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org
Cc: Kumari Pallavi <kumari.pallavi@....qualcomm.com>, quic_bkumar@...cinc.com,
        ekansh.gupta@....qualcomm.com, linux-kernel@...r.kernel.org,
        quic_chennak@...cinc.com, dri-devel@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        jingyi.wang@....qualcomm.com, aiqun.yu@....qualcomm.com,
        ktadakam@....qualcomm.com
Subject: [PATCH v5 1/4] dt-bindings: misc: qcom,fastrpc: Add compatible for Kaanapali

Kaanapali introduces changes in DSP IOVA layout and CDSP DMA addressing
that differ from previous SoCs. The SID field moves within the physical
address, and CDSP now supports a wider DMA range, requiring updated
sid_pos and DMA mask handling in the driver.
To apply these changes only on Kaanapali, add a SoC-specific compatible
string "qcom,kaanapali-fastrpc". Older DTs using "qcom,fastrpc" remain
valid.

Signed-off-by: Kumari Pallavi <kumari.pallavi@....qualcomm.com>
---
 Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
index 3f6199fc9ae6..8bf7d4d83c8b 100644
--- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
+++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
@@ -18,7 +18,13 @@ description: |
 
 properties:
   compatible:
-    const: qcom,fastrpc
+    oneOf:
+      - items:
+          - enum:
+              - qcom,kaanapali-fastrpc
+          - const: qcom,fastrpc
+      - items:
+          - const: qcom,fastrpc
 
   label:
     enum:
-- 
2.34.1