From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: Sergei Shtylyov
<sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
Cc: Alexandre Bailon
<abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org,
b-liu-l0cyMroinI0@public.gmane.org,
robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
nsekhar-l0cyMroinI0@public.gmane.org,
khilman-rdvid1DuHRBWk0Htik3J/w@public.gmane.org,
ptitiano-rdvid1DuHRBWk0Htik3J/w@public.gmane.org,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2 0/7] dmaengine: cppi41: Make CPPI 4.1 driver more generic
Date: Tue, 17 Jan 2017 08:20:52 -0800 [thread overview]
Message-ID: <20170117162052.GK7403@atomide.com> (raw)
In-Reply-To: <28b57293-4395-4281-0c64-19f299e6eaf6-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
* Sergei Shtylyov <sergei.shtylyov-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org> [170117 08:06]:
> On 01/17/2017 06:55 PM, Tony Lindgren wrote:
>
> > > Most of the patch of this series were part of
> > > "[PATCH 00/11] dmaengine: cppi41: Add dma support to da8xx"
> > >
> > > This series intend to make the CPPI 4.1 more generic in order to
> > > add a new platform (the DA8xx).
> > > To achieve that, all the IRQ code present in CPPI 4.1 driver has been moved
> > > to MUSB DSPS driver.
> > > Other changes mainly update the glue layer and platform code to make the
> > > whole driver more generic.
> >
> > So does da8xx use CPPI 4.1 DMA for other devices also in addition to
> > musb?
>
> No. DA8xx CPPI 4.1 is implemented as a part of the MUSB peripheral.
> But there were a SoC (support for which never got merged upstream) where
> CPPI 4.1 DMA is not limited to USB.
OK thanks for confirming it may pop up in some other devices too.
Anyways that means we can make the cppi41.c runtime PM support simpler
as it's always guaranteed to be enabled when in use with musb.
Regards,
Tony
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next prev parent reply other threads:[~2017-01-17 16:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-17 13:45 [PATCH v2 0/7] dmaengine: cppi41: Make CPPI 4.1 driver more generic Alexandre Bailon
[not found] ` <20170117134540.9988-1-abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2017-01-17 13:45 ` [PATCH v2 1/7] usb: musb: dsps: Manage CPPI 4.1 DMA interrupt in dsps Alexandre Bailon
[not found] ` <20170117134540.9988-2-abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2017-01-17 17:20 ` kbuild test robot
2017-01-17 13:45 ` [PATCH v2 2/7] usb: usb: dsps: update device tree bindings Alexandre Bailon
[not found] ` <20170117134540.9988-3-abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2017-01-19 18:15 ` Rob Herring
2017-01-20 9:18 ` Alexandre Bailon
2017-01-17 13:45 ` [PATCH v2 3/7] dmaengine: cppi41: Remove usbss_mem Alexandre Bailon
2017-01-17 13:45 ` [PATCH v2 4/7] dmaengine: cppi41: rename platform variables Alexandre Bailon
2017-01-17 13:45 ` [PATCH v2 5/7] dmaengine: cppi41: Move some constants to glue layer Alexandre Bailon
2017-01-17 13:45 ` [PATCH v2 6/7] dmaengine: cppi41: init_sched(): Get number of channels from DT Alexandre Bailon
[not found] ` <20170117134540.9988-7-abailon-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2017-01-17 17:09 ` Sergei Shtylyov
[not found] ` <36cd39fc-c14b-f117-e25e-f0489d465cc5-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2017-01-17 17:30 ` Alexandre Bailon
2017-01-17 13:45 ` [PATCH v2 7/7] dmaengine: cppi41: Fix a race between PM runtime and channel abort Alexandre Bailon
2017-01-17 15:55 ` [PATCH v2 0/7] dmaengine: cppi41: Make CPPI 4.1 driver more generic Tony Lindgren
[not found] ` <20170117155545.GI7403-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-01-17 16:05 ` Sergei Shtylyov
[not found] ` <28b57293-4395-4281-0c64-19f299e6eaf6-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2017-01-17 16:20 ` Tony Lindgren [this message]
2017-01-17 16:51 ` Sergei Shtylyov
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