linux-kernel - Re: [Letux-kernel] [PATCH RFC] bluetooth: add uart h4 devices via serdev/devicetree

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Message-ID: <20190104205600.3e6b31c9@aktux>
Date:   Fri, 4 Jan 2019 20:57:10 +0100
From:   Andreas Kemnade <andreas@...nade.info>
To:     Marcel Holtmann <marcel@...tmann.org>
Cc:     Rob Herring <robh@...nel.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        "H . Nikolaus Schaller" <hns@...delico.com>,
        devicetree <devicetree@...r.kernel.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-bluetooth@...r.kernel.org, letux-kernel@...nphoenux.org
Subject: Re: [Letux-kernel] [PATCH RFC] bluetooth: add uart h4 devices via
 serdev/devicetree

Hi Marcel,

On Fri, 4 Jan 2019 10:07:34 +0100
Marcel Holtmann <marcel@...tmann.org> wrote:

> Hi Andreas,
> 
> >>>> Btw. I see nothing standing in the way of merging btuart.c driver and then go from there. Either I dig this out and submit or someone else does.
> >>>>   
> >>> Do you mean this?
> >>> https://patchwork.kernel.org/patch/10490651/    
> >> 
> >> yes, that one.
> >>   
> > Hmm, there seemed to be nothing in the pull requests regarding btuart.
> > Did you change plans?  
> 
> because I only submitted it as RFC. We can easily merge that one upstream since it is rather trivial. The main problem is how you want to do the device matching. Do you have a DT entry for your really simple devices?
> 
Hmm, in that link it is non-rfc. So someone picked you rfc patch up and
submitted it?

You might see what we are already doing here:
http://git.goldelico.com/?p=letux-kernel.git;a=blobdiff;f=arch/arm/boot/dts/omap3-gta04.dtsi;h=4d2bac4293938de4a15a59979616909cf8842524;hp=bfced960d63ec40cf9db4901374b331737a9a168;hb=f78bf51754e35010de40518b9a8a148d0269bbc8;hpb=b6805813a9ab5b0d66b44cc54a0059eca4dd0a98

We are using compatible = "wi2wi,w2cbw003-bluetooth"

But I think we should also add a generic device string like
bluetooth,h4
So if people dig out older hardware, they can just add that to their
device trees and have bluetooth

The full patchset we are currently using is here:
http://git.goldelico.com/?p=letux-kernel.git;a=shortlog;h=refs/heads/letux/bluetooth-h4-serdev

Regards,
Andreas

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