The SSIF response is handled by a userspace application, which may exceed
the default 500 ms timeout when the BMC or application is under heavy load.

Add a new device tree property, `timeout-ms`, allowing platforms to adjust
the response timeout based on their specific requirements. This helps
prevent timeouts in scenarios where longer processing times are expected.

Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
---
 Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml b/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml
index 02b662d780bb..c8a863d44f97 100644
--- a/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml
+++ b/Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml
@@ -19,6 +19,12 @@ properties:
   reg:
     maxItems: 1
 
+  timeout-ms:
+    minimum: 0
+    maximum: 4294967295
+    default: 500
+    description: Response timeout in millisecond.
+
 required:
   - compatible
   - reg

-- 
2.31.1

On Mon, 03 Feb 2025 21:09:13 +0800, Potin Lai wrote:
> The SSIF response is handled by a userspace application, which may exceed
> the default 500 ms timeout when the BMC or application is under heavy load.
> 
> Add a new device tree property, `timeout-ms`, allowing platforms to adjust
> the response timeout based on their specific requirements. This helps
> prevent timeouts in scenarios where longer processing times are expected.
> 
> Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
> ---
>  Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>