* macb: zynq: why is SG disabled?
@ 2015-07-01 15:14 Nicolae Rosia
2015-07-01 17:04 ` Cyrille Pitchen
0 siblings, 1 reply; 7+ messages in thread
From: Nicolae Rosia @ 2015-07-01 15:14 UTC (permalink / raw)
To: Michal Simek, Punnaiah Choudary Kalluri, netdev, Nicolas Ferre,
Michal Simek, linux-arm-kernel
Cc: Cyrille Pitchen, Nicolas Ferre
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
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: macb: zynq: why is SG disabled?
2015-07-01 15:14 macb: zynq: why is SG disabled? Nicolae Rosia
@ 2015-07-01 17:04 ` Cyrille Pitchen
0 siblings, 0 replies; 7+ messages in thread
From: Cyrille Pitchen @ 2015-07-01 17:04 UTC (permalink / raw)
To: Nicolae Rosia, Michal Simek, Punnaiah Choudary Kalluri, netdev,
Nicolas Ferre, linux-arm-kernel
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
^ permalink raw reply [flat|nested] 7+ messages in thread
* macb: zynq: why is SG disabled?
@ 2015-07-01 17:04 ` Cyrille Pitchen
0 siblings, 0 replies; 7+ messages in thread
From: Cyrille Pitchen @ 2015-07-01 17:04 UTC (permalink / raw)
To: linux-arm-kernel
Le 01/07/2015 17:14, Nicolae Rosia a ?crit :
> 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
^ permalink raw reply [flat|nested] 7+ messages in thread
* RE: macb: zynq: why is SG disabled?
2015-07-01 17:04 ` Cyrille Pitchen
@ 2015-07-02 2:33 ` Punnaiah Choudary Kalluri
-1 siblings, 0 replies; 7+ messages in thread
From: Punnaiah Choudary Kalluri @ 2015-07-02 2:33 UTC (permalink / raw)
To: Cyrille Pitchen, Nicolae Rosia, Michal Simek, netdev,
Nicolas Ferre, linux-arm-kernel
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.
Regards,
Punnaiah
> -----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
^ permalink raw reply [flat|nested] 7+ messages in thread
* macb: zynq: why is SG disabled?
@ 2015-07-02 2:33 ` Punnaiah Choudary Kalluri
0 siblings, 0 replies; 7+ messages in thread
From: Punnaiah Choudary Kalluri @ 2015-07-02 2:33 UTC (permalink / raw)
To: linux-arm-kernel
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.
Regards,
Punnaiah
> -----Original Message-----
> From: Cyrille Pitchen [mailto:cyrille.pitchen at atmel.com]
> Sent: Wednesday, July 01, 2015 10:34 PM
> To: Nicolae Rosia; Michal Simek; Punnaiah Choudary Kalluri;
> netdev at vger.kernel.org; Nicolas Ferre; linux-arm-kernel at lists.infradead.org
> Subject: Re: macb: zynq: why is SG disabled?
>
> Le 01/07/2015 17:14, Nicolae Rosia a ?crit :
> > 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
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: macb: zynq: why is SG disabled?
2015-07-02 2:33 ` Punnaiah Choudary Kalluri
@ 2015-07-02 7:48 ` Nicolas Ferre
-1 siblings, 0 replies; 7+ messages in thread
From: Nicolas Ferre @ 2015-07-02 7:48 UTC (permalink / raw)
To: Punnaiah Choudary Kalluri, Cyrille Pitchen, Nicolae Rosia,
Michal Simek, netdev, linux-arm-kernel
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
^ permalink raw reply [flat|nested] 7+ messages in thread
* macb: zynq: why is SG disabled?
@ 2015-07-02 7:48 ` Nicolas Ferre
0 siblings, 0 replies; 7+ messages in thread
From: Nicolas Ferre @ 2015-07-02 7:48 UTC (permalink / raw)
To: linux-arm-kernel
Le 02/07/2015 04:33, Punnaiah Choudary Kalluri a ?crit :
> 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 at atmel.com]
>> Sent: Wednesday, July 01, 2015 10:34 PM
>> To: Nicolae Rosia; Michal Simek; Punnaiah Choudary Kalluri;
>> netdev at vger.kernel.org; Nicolas Ferre; linux-arm-kernel at lists.infradead.org
>> Subject: Re: macb: zynq: why is SG disabled?
>>
>> Le 01/07/2015 17:14, Nicolae Rosia a ?crit :
>>> 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
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2015-07-02 7:49 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-07-01 15:14 macb: zynq: why is SG disabled? Nicolae Rosia
2015-07-01 17:04 ` Cyrille Pitchen
2015-07-01 17:04 ` Cyrille Pitchen
2015-07-02 2:33 ` Punnaiah Choudary Kalluri
2015-07-02 2:33 ` Punnaiah Choudary Kalluri
2015-07-02 7:48 ` Nicolas Ferre
2015-07-02 7:48 ` Nicolas Ferre
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