From: Nicolas Ferre <nicolas.ferre@atmel.com>
To: Punnaiah Choudary Kalluri <punnaiah.choudary.kalluri@xilinx.com>,
"Cyrille Pitchen" <cyrille.pitchen@atmel.com>,
Nicolae Rosia <nicolae.rosia@certsign.ro>,
Michal Simek <michals@xilinx.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: macb: zynq: why is SG disabled?
Date: Thu, 2 Jul 2015 09:48:34 +0200 [thread overview]
Message-ID: <5594ECD2.7090701@atmel.com> (raw)
In-Reply-To: <03CA77BA8AF6F1469AEDFBDA1322A7B7495B9EE3@XAP-PVEXMBX02.xlnx.xilinx.com>
Le 02/07/2015 04:33, Punnaiah Choudary Kalluri a écrit :
> Hi Nicolae and Cyrille,
>
> SG feature was not tested for Zynq using macb driver but tested it using the
> emacps Driver in Xilinx tree (this driver is deprecated recently)
>
> We will test and enable this feature in driver for Zynq.
Ok, fine: we will be glad to merge patches that would enable this
feature on Zynq.
Bye,
>> -----Original Message-----
>> From: Cyrille Pitchen [mailto:cyrille.pitchen@atmel.com]
>> Sent: Wednesday, July 01, 2015 10:34 PM
>> To: Nicolae Rosia; Michal Simek; Punnaiah Choudary Kalluri;
>> netdev@vger.kernel.org; Nicolas Ferre; linux-arm-kernel@lists.infradead.org
>> Subject: Re: macb: zynq: why is SG disabled?
>>
>> Le 01/07/2015 17:14, Nicolae Rosia a écrit :
>>> Hello,
>>>
>>> After reading the GEM part of Zynq7000 Technical Reference Manual [0], I
>> think that SG should be supported.
>>> Is there a reason why SG is disabled in macb for Zynq?
>>>
>>> Best regards,
>>> Nicolae Rosia
>>
>> Hi Nicolae,
>>
>> when the scatter-gather patch was introduced, the feature was enabled only
>> on tested boards to avoid regressions on other boards.
>> So SG is enabled on sama5d4x and sama5d2x SoCs. SG is disabled on purpose
>> on sama5d3x.
>>
>> For Zynq, I think the feature is still disabled just because it has never been
>> tested.
>>
>> Best regards,
>>
>> Cyrille
>
--
Nicolas Ferre
prev parent reply other threads:[~2015-07-02 7:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-01 15:14 macb: zynq: why is SG disabled? Nicolae Rosia
2015-07-01 17:04 ` Cyrille Pitchen
2015-07-02 2:33 ` Punnaiah Choudary Kalluri
2015-07-02 7:48 ` Nicolas Ferre [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5594ECD2.7090701@atmel.com \
--to=nicolas.ferre@atmel.com \
--cc=cyrille.pitchen@atmel.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=michals@xilinx.com \
--cc=netdev@vger.kernel.org \
--cc=nicolae.rosia@certsign.ro \
--cc=punnaiah.choudary.kalluri@xilinx.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).