* Re: [PATCH] ARM: dts: sun8i: add NAND controller node for A23/A33
[not found] <20160823135546.60179-1-icenowy@aosc.xyz>
@ 2016-08-24 6:02 ` Maxime Ripard
[not found] ` <16141472026895@web4j.yandex.ru>
0 siblings, 1 reply; 2+ messages in thread
From: Maxime Ripard @ 2016-08-24 6:02 UTC (permalink / raw)
To: Boris Brezillon, Icenowy Zheng
Cc: Russell King, Chen-Yu Tsai, Rob Herring, Mark Rutland, devicetree,
linux-arm-kernel, linux-kernel, linux-sunxi
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Hi,
On Tue, Aug 23, 2016 at 09:55:46PM +0800, Icenowy Zheng wrote:
> A23/A33 has a NAND controller which can now be used properly.
>
> Add a device node for it.
>
> The DMA function cannot work because of changed DMA IP block, so it's
> temporarily removed in the device node. However, with PIO mode it can still
> work.
What is preventing the NAND driver to work with DMA with the sun6i driver?
Thanks,
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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* Re: [PATCH] ARM: dts: sun8i: add NAND controller node for A23/A33
[not found] ` <16141472026895@web4j.yandex.ru>
@ 2016-08-25 20:53 ` Maxime Ripard
0 siblings, 0 replies; 2+ messages in thread
From: Maxime Ripard @ 2016-08-25 20:53 UTC (permalink / raw)
To: Icenowy Zheng
Cc: Boris Brezillon, Russell King, Chen-Yu Tsai, Rob Herring,
Mark Rutland, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com
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Hi,
On Wed, Aug 24, 2016 at 04:21:35PM +0800, Icenowy Zheng wrote:
> Hi Maxime,
>
> 24.08.2016, 14:02, "Maxime Ripard" <maxime.ripard@free-electrons.com>:
> > Hi,
> >
> > On Tue, Aug 23, 2016 at 09:55:46PM +0800, Icenowy Zheng wrote:
> >> A23/A33 has a NAND controller which can now be used properly.
> >>
> >> Add a device node for it.
> >>
> >> The DMA function cannot work because of changed DMA IP block, so it's
> >> temporarily removed in the device node. However, with PIO mode it can still
> >> work.
> >
> > What is preventing the NAND driver to work with DMA with the sun6i driver?
>
> It seems that under sun6i we should use dedicated rx and tx DMAs, but not a
> "rxtx" DMA.
Ah, I see. I just applied your patch, thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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2016-08-24 6:02 ` [PATCH] ARM: dts: sun8i: add NAND controller node for A23/A33 Maxime Ripard
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