Marvell D2Plug

Belisko Marek marek.belisko at gmail.com
Mon May 16 16:34:19 UTC 2011


On Mon, May 16, 2011 at 6:28 PM, saeed bishara <saeed.bishara at gmail.com> wrote:
> On Mon, May 16, 2011 at 6:46 PM, Greg KH <greg at kroah.com> wrote:
>> On Mon, May 16, 2011 at 11:20:59AM +0300, saeed bishara wrote:
>>> On Sun, May 15, 2011 at 7:28 PM, Greg KH <greg at kroah.com> wrote:
>>> > On Sun, May 15, 2011 at 03:11:21PM +0300, saeed bishara wrote:
>>> >> On Sun, May 15, 2011 at 10:57 AM, saeed bishara <saeed.bishara at gmail.com> wrote:
>>> >> > Hi all,
>>> >> >    Marvell is looking to improve the mainline support of its new plug
>>> >> > (http://www.globalscaletechnologies.com/c-8-d2plug.aspx)
>>> >> >  this plug is based on the ARMADA 510 SoC
>>> >> > (http://www.marvell.com/products/processors/applications/armada_500/Marvell_Armada510_SoC.pdf),
>>> >> > we have added basic support to this SoC into mainline kernel (under
>>> >> > arch/arm/mach-dove), but there still a lot of features/drivers
>>> >> > missing, and we would like to work with community developers on this.
>>> >> >   Right now Marvell is working on disclosed version of the spec of
>>> >> > this SoC, and will provide need information for developers. and we are
>>> >> > ready to send - for free - some D2plugs for active developers those
>>> >> > willing to contribute.
>>> >> >   as I said, the mainline have basic support for this SoC (aka dove),
>>> >> > but there are a lot of drivers/features that missing: lcd driver,
>>> >> > power management, nand driver, etc. so if you are interested in
>>> >> > pushing those features to mainline, please let me know.
>>> >> >
>>> >> > saeed
>>> >> >
>>> >> please note that Marvell provides Linux kernel (based on 2.6.32) for
>>> >> this device, but this kernel is not written according to kernel coding
>>> >> style, but can be very useful as reference. here is a link to git tree
>>> >> http://kernel.ubuntu.com/git?p=ycmiao/ubuntu-maverick.git;a=tree;h=refs/heads/mvl-dove;hb=refs/heads/mvl-dove
>>> >
>>> > Is that the tree with the drivers as well?
>>> yes, it includes all the drivers/features.
>>
>> Great.
>>
>>> > Do you want us to pick things out here, or go off of a more recent tree
>>> > given the above mention of merging the arch-specific stuff to mainline?
>>> a lot of stuff need to be re-written according to new APIs and linux
>>> coding style, so I don't thinks it can be merge to staging tree,
>>
>> Well the rewrite for new apis would happen first, then the code can be
>> merged into the staging tree, then we can do the "real" cleanup
>> afterward, with everyone helping out.
>>
>>> > Oh, and do you also need help with the arch-specific code as well, given
>>> > the recent changes in how the ARM developers are working with the rest
>>> > of the kernel community?  If so, we (well, at least I) can help out
>>> > there.
>>> yes, sure. the current mainline already includes basic support for the
>>> dove soc. but a lot of features. still missing, for example, the
>>> support for the D2plug board, clock management etc. I was planning to
>>> add this support by myself, but, as you mentioned, this will not be
>>> easy to do as it used to be. so maybe we have to do it using
>>> devicetree. so it will be great if somebody can help with that.
>>
>> I think you need to lay out exactly what you want/need done here, as it
>> sounds like both a lot of different things, and pretty vague.
>>
>> Do you want to go through the above tree and look at the diff and pick
>> the different pieces out, or do you want me to do that and ask you about
>> all of them?
> Greg, it very big list, our patch touches ~1000 files.
> I think I should prepare a list of the following:
> 1. new drives that need to be written from scratch
> 2. missing features for the existing drivers
> 3. arch-specific missing features.
>
> the tree above will be used by developers as a reference only. I don't
> think it's practical to rebase it to recent kernels or to do direct
> work on it. does that answers your question?
>
>>
>> Also, how can I get a sample device to test that I don't break anything?
> sure, we will send you one.
Could I get also one? I can contribute aswell. When there will be a
list it would be very good.
>>
>> thanks,
>>
>> greg k-h
>>
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marek

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