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Date:   Mon, 20 Feb 2017 15:15:39 +1030
From:   Andrew Jeffery <>
To:     Cédric Le Goater <>,
        Corey Minyard <>
Cc:     Joel Stanley <>,,,
Subject: Re: [PATCH] ipmi: bt-bmc: Use a regmap for register access

Hi Cory,

On Tue, 2016-12-06 at 16:02 +0100, Cédric Le Goater wrote:
> [ this is a resend bc of some mailing list issues] 
> On 12/06/2016 03:57 AM, Andrew Jeffery wrote:
> > The registers for the bt-bmc device live under the Aspeed LPC
> > controller. Devicetree bindings have recently been introduced for the
> > LPC controller where the "host" portion of the LPC register space is
> > described as a syscon device. Future devicetrees describing the bt-bmc
> > device should nest its node under the appropriate "simple-mfd", "syscon"
> > compatible node.
> > 
> > This change allows the bt-bmc driver to function with both syscon and
> > non-syscon- based devicetree descriptions by always using a regmap for
> > register access, either retrieved from the parent syscon device or
> > instantiated if none exists.
> > 
> > The patch has been tested on an OpenPOWER Palmetto machine, successfully
> > booting, rebooting and powering down the host.
> > 
> > Signed-off-by: Andrew Jeffery <>
> It would be nice to have an example of the associated binding. 
> I did not see it. A part from that :
> Reviewed-by: Cédric Le Goater <>

Will this make it into 4.11?


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