From: "Albrecht Dreß" <albrecht.dress-KvP5wT2u2U0@public.gmane.org>
To: Devicetree Discussions
<devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org>,
"Ben Dooks (embedded platforms)"
<ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>
Subject: Q/RFC: add dts property for i2c apater timeout?
Date: Tue, 12 Jan 2010 20:43:09 +0100 [thread overview]
Message-ID: <1263325400.2298.0@antares> (raw)
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Hi,
before submitting a patch, I would like to hear your opinion...
When testing a i2c bus on the '5200, I ran into bus hangs because one of the attached chips went south. The timeout in struct i2c_adapter of drivers/i2c/busses/i2c-mpc.c is hard-wired to 1 second (HZ jiffies) which is *really* (too) long, at least for my
use case.
Wouldn't it make sense to add an optional dts property as to overwrite that value? I.e. something like
timeout = <xxx>;
where xxx is given in microseconds? Or should the property read "fsl,timeout" as I would apply it to a Freescale chip?
Thanks, Albrecht.
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