linux-kernel - [PATCH 0/2] ipmi: ssif_bmc: Add support for adjustable response timeout

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Message-Id: <20250203-ssif-response-timeout-ms-v1-0-6fe279740181@gmail.com>
Date: Mon, 03 Feb 2025 21:09:12 +0800
From: Potin Lai <potin.lai.pt@...il.com>
To: Corey Minyard <corey@...yard.net>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Quan Nguyen <quan@...amperecomputing.com>, 
 Patrick Williams <patrick@...cx.xyz>
Cc: openipmi-developer@...ts.sourceforge.net, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Cosmo Chou <cosmo.chou@...ntatw.com>, 
 Potin Lai <potin.lai@...ntatw.com>, Potin Lai <potin.lai.pt@...il.com>
Subject: [PATCH 0/2] ipmi: ssif_bmc: Add support for adjustable response
 timeout

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.  
To provide flexibility, this patch introduces the `timeout-ms` property in  
the device tree binding, allowing platforms to adjust the response timeout  
as needed.  

If `timeout-ms` is not specified, the default response timeout remains  
500 ms, ensuring backward compatibility while giving platforms the option  
to configure a longer timeout when necessary. This prevents timeouts in
cases where userspace processing may take longer.

Signed-off-by: Potin Lai <potin.lai.pt@...il.com>
---
Potin Lai (2):
      bindings: ipmi: ssif-bmc: Add property to adjust response timeout
      ipmi: ssif_bmc: Add support for adjustable response timeout

 Documentation/devicetree/bindings/ipmi/ssif-bmc.yaml | 6 ++++++
 drivers/char/ipmi/ssif_bmc.c                         | 8 +++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)
---
base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b
change-id: 20250203-ssif-response-timeout-ms-3bdb88ab337f

Best regards,
-- 
Potin Lai <potin.lai.pt@...il.com>