linux-kernel - Re: [PATCH v3 0/8] Tegra Combined UART driver

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Date:   Mon, 2 Jul 2018 16:17:28 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Mikko Perttunen <mperttunen@...dia.com>, jassisinghbrar@...il.com,
        jonathanh@...dia.com, devicetree@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/8] Tegra Combined UART driver

On Mon, Jul 02, 2018 at 04:07:42PM +0200, Greg KH wrote:
> On Mon, Jul 02, 2018 at 04:03:43PM +0200, Thierry Reding wrote:
> > On Mon, Jul 02, 2018 at 02:40:25PM +0300, Mikko Perttunen wrote:
> > > Hi, here's v3. Changes are in individual patches. Acks are still
> > > missing from the following patches:
> > > 
> > > mailbox: Add transmit done by blocking option
> > > mailbox: tegra-hsp: Refactor in preparation of mailboxes
> > > mailbox: tegra-hsp: Add support for shared mailboxes
> > > serial: Add Tegra Combined UART driver
> > 
> > There don't seem to be any build-time dependencies between the above, so
> > technically I guess these could be applied to the respective trees
> > separately. The only thing we need to be careful about is to not merge
> > the final patch before the others, because it will break serial console
> > if the other patches aren't applied.
> > 
> > Jassi, Greg,
> > 
> > What I could do to resolve the runtime dependency is pull the mailbox
> > patches into a separate branch, create another separate branch for the
> > TCU driver that is based on the mailbox branch and then base the DT
> > changes on that branch, or possibly send a separate pull request for
> > just the DT change late in the merge window or shortly after v4.19-rc1.
> > 
> > Obviously the latter would be equivalent to you guys merging the patches
> > through your trees for v4.19-rc1 and me sending out a late pull request
> > for the DT bits.
> 
> No need for me to take the serial driver if these types of dependancies
> are required, you are free to take that in your tree if you want to.
> 
> does that help?

It does if Jassi's okay if I take the mailbox drivers into the Tegra
tree as well. I'll wait for Jassi to comment and then we can decide what
to do.

Thanks,
Thierry

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