From: gregkh@linuxfoundation•org (Greg Kroah-Hartman)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCHv3 0/3] Devicetree bindings for Ion
Date: Mon, 12 Sep 2016 12:22:39 +0200 [thread overview]
Message-ID: <20160912102239.GA5034@kroah.com> (raw)
In-Reply-To: <1472601869-19469-1-git-send-email-labbott@redhat.com>
On Tue, Aug 30, 2016 at 05:04:26PM -0700, Laura Abbott wrote:
> Hi,
>
> This is a long overdue resend and slight update from the last version[1] of
> Ion devicetree bindings.
>
> The goal here is to keep the Ion bindings minimalist. I experimented with
> dropping all but a dummy devicetree node and just matching on the machine
> name in the platform file. This ends up being a nightmare for the DMA (i.e. CMA)
> heap type. That heap requires a device structure to do its allocation and
> setting up a device structure properly isn't pretty. I have other ideas for
> working with that heap if this gets NAKed.
>
> I've thought about the idea of a devicetree overlay for specifying more
> platform configuration but that a) requires Android actually load the overlay
> at the right time in the framework and b) opens up an entirely new can of
> worms.
>
> In conclusion, if we assume that Ion platform support is something anyone
> actually wants, this is still the least bad and intrusive idea I've come up
> with. There exists hisilicon Ion code but it came in without being fully acked.
> I've converted it over as an example of how it might look.
>
> As always, feedback appreciated.
Give a total lack of feeback, I've now applied these patches :)
thanks,
greg k-h
prev parent reply other threads:[~2016-09-12 10:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-31 0:04 [PATCHv3 0/3] Devicetree bindings for Ion Laura Abbott
2016-08-31 0:04 ` [PATCHv3 1/3] devicetree: " Laura Abbott
2016-09-12 18:57 ` Frank Rowand
2016-08-31 0:04 ` [PATCHv3 2/3] staging: ion: Add files for parsing the devicetree Laura Abbott
2016-08-31 0:04 ` [PATCHv3 3/3] staging: android: ion: Convert hi6220 to common platform Laura Abbott
2016-09-12 10:22 ` Greg Kroah-Hartman [this message]
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