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.

Signed-off-by: Kumari Pallavi <kumari.pallavi@oss.qualcomm.com>
---
 Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
index 3f6199fc9ae6..142309e2c656 100644
--- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
+++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
@@ -18,7 +18,12 @@ description: |
 
 properties:
   compatible:
-    const: qcom,fastrpc
+    oneOf:
+      - items:
+          - enum:
+              - qcom,kaanapali-fastrpc
+          - const: qcom,fastrpc
+      - const: qcom,fastrpc
 
   label:
     enum:
-- 
2.34.1

On Thu, Dec 11, 2025 at 03:39:30PM +0530, Kumari Pallavi wrote:
> 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.
> 
> Signed-off-by: Kumari Pallavi <kumari.pallavi@oss.qualcomm.com>
> ---
>  Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> index 3f6199fc9ae6..142309e2c656 100644
> --- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> +++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
> @@ -18,7 +18,12 @@ description: |
>  
>  properties:
>    compatible:
> -    const: qcom,fastrpc
> +    oneOf:
> +      - items:
> +          - enum:
> +              - qcom,kaanapali-fastrpc
> +          - const: qcom,fastrpc

Does the driver work at all on this platform without the changes in this 
series? If not, then it is not compatible with "qcom,fastrpc" as you 
say here.

Rob