From mboxrd@z Thu Jan  1 00:00:00 1970
From: greg@kroah.com (Greg KH)
Date: Mon, 12 Jan 2015 07:31:19 -0800
Subject: pmbus driver for x86
In-Reply-To: <54B36B05.8050000@gmail.com>
References: <54B36B05.8050000@gmail.com>
Message-ID: <20150112153119.GA6092@kroah.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Mon, Jan 12, 2015 at 03:34:45PM +0900, J.Hwan Kim wrote:
> Hi,
> My server (S2600CP) has BMC module and power supply with pmbus function.
> When I try to control and monitor with pmbus driver in linux, it fails.
> I connected oscilloscope to pmbus connector (SCL, SDA) pins, there was 
> no signal from pmbus driver.
> But when the system went down, there are pmbus signals which may be 
> generated by BMC.
> In x86 server,  is pmbus connected only to BMC(ipmi)?
> Is it not connected to CPU i2c bus?
> is it impossible to monitor power supply with pmbus drvier?

Why not ask on the lm-sensors mailing list, where the kernel sensor
developers are, that wrote this code?  That would be the best place for
it.

good luck,

greg k-h