Hi Morimoto-san,
On Fri, Sep 14, 2018 at 2:53 AM Kuninori Morimoto
wrote:
> > > Before 6c92d5a2744e2761 patch, driver will forcibly ignore
> > > non-SSI modules, and try to use PIO mode.
> > > I'm not sure it is "kindly support" or "overkill support".
> > >
> > > After this patch, it needs DMA,
Hi Geert
> > ...which is in fact the exact same problem that the IOMMU code has -
> > might it make sense to give of_dma_request_slave_channel() similar
> > (optional?) driver_deferred_probe_check_state() logic, i.e. "if my DMAC
> > driver's not shown up by this point, assume it's not built-in
Hi Geert
> > Before 6c92d5a2744e2761 patch, driver will forcibly ignore
> > non-SSI modules, and try to use PIO mode.
> > I'm not sure it is "kindly support" or "overkill support".
> >
> > After this patch, it needs DMA, otherwise, probe will be failed.
> > DT shouldn't have non-SSI modules if
Hi Robin,
On Thu, Sep 13, 2018 at 12:12 PM Robin Murphy wrote:
> On 13/09/18 10:00, Geert Uytterhoeven wrote:
> [...]
> > The main issue is that if of_dma_find_controller() fails, a DMA slave driver
> > cannot distinguish between dmac not yet probed successfully, and dmac
> > driver not present.
On 13/09/18 10:00, Geert Uytterhoeven wrote:
[...]
The main issue is that if of_dma_find_controller() fails, a DMA slave driver
cannot distinguish between dmac not yet probed successfully, and dmac
driver not present.
...which is in fact the exact same problem that the IOMMU code has -
might
Hi Mark,
On Wed, Sep 12, 2018 at 5:51 PM Mark Brown wrote:
> On Tue, Sep 11, 2018 at 11:43:47AM +0200, Geert Uytterhoeven wrote:
> > So it seems the audio DMAC is deferred a second time, before the iommu
> > driver
> > probed.
>
> Shouldn't there be at least one more round of deferred probe
Hi Morimoto-san,
On Thu, Sep 13, 2018 at 7:48 AM Kuninori Morimoto
wrote:
> > > -
> > > commit ac6bbf0cdf4206c517ac9789814c23e372ebce4d
> > > Author: Rob Herring
> > > Date: Mon Jul 9 09:41:52 2018 -0600
> > >
> > > iommu: Remove
Hi Geert
Thank you for your feedback
> > -
> > commit ac6bbf0cdf4206c517ac9789814c23e372ebce4d
> > Author: Rob Herring
> > Date: Mon Jul 9 09:41:52 2018 -0600
> >
> > iommu: Remove IOMMU_OF_DECLARE
> >
> > Now that we use the
On Tue, Sep 11, 2018 at 11:43:47AM +0200, Geert Uytterhoeven wrote:
> So it seems the audio DMAC is deferred a second time, before the iommu driver
> probed.
Shouldn't there be at least one more round of deferred probe triggers
after the IOMMU probes?
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Hi Morimoto-san,
CC asoc, dma, iommu
On Tue, Sep 4, 2018 at 8:06 AM Kuninori Morimoto
wrote:
> Hi Renesas ML
> Cc Rob
>
> I noticed that Sound driver is using PIO mode
> on latest kernel.
>
> ...
> rcar_sound ec50.sound: src[0] : probe error -11
> rcar_sound
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