From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Felipe Balbi <felipe.balbi@linux.intel.com>,
"Thang Q. Nguyen" <tqnguyen@apm.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-omap@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm@lists.infradead.org,
Arnd Bergmann <arnd@arndb.de>,
"Karicheri, Muralidharan" <m-karicheri2@ti.com>,
Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Phong Vo <pvo@apm.com>, Loc Ho <lho@apm.com>,
patches@apm.com, Santosh Shilimkar <ssantosh@kernel.org>,
"Ben Dooks (embedded platforms)" <ben-linux@fluff.org>
Subject: Re: [PATCH v3 2/2] usb:dwc3: pass arch data to xhci-hcd child
Date: Wed, 30 Mar 2016 16:52:13 +0300 [thread overview]
Message-ID: <56FBDA0D.4030507@ti.com> (raw)
In-Reply-To: <87mvpgi02f.fsf@intel.com>
On 03/30/2016 04:10 PM, Felipe Balbi wrote:
> "Thang Q. Nguyen" <tqnguyen@apm.com> writes:
>
>> [ text/plain ]
>> From: "Thang Q. Nguyen" <tqnguyen@apm.com>
>>
>> The xhci-hcd child node needs to inherit archdata attribute to use
>> dma_ops functions and attributes. This patch enables the USB DWC3
>> driver to pass archdata attributes to its xhci-hcd child node.
>>
>> Changes from v2:
>> - None
>>
>> Changes from v1:
>> - None
>
> changes should be between tearline and diffstat.
>
uh. This become a real problem :(, especially with LPAE enabled.
DMA properties need to be inherited not only here, but also in
usb_add_gadget_udc_release(). And probably in other places
where devices are created manually - the worst case : device is created
manually but doesn't belong to any bus.
And DMA configuration must include dma_pfn_offset also!
And how about iommu staff?
FYI. Solution used for PCI
c49b8fc of/pci: Add of_pci_dma_configure() to update DMA configuration
Rejected: introduce dma_init_dev_from_parent() or smth. like this
http://permalink.gmane.org/gmane.linux.ports.arm.kernel/378317
https://lkml.org/lkml/2014/11/4/519
--
regards,
-grygorii
next prev parent reply other threads:[~2016-03-30 13:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 7:18 [PATCH v3 0/2] usb:dwc3: Enable USB DWC3 support for 64-bit system Thang Q. Nguyen
2016-03-10 7:18 ` [PATCH v3 1/2] usb:dwc3: Enable " Thang Q. Nguyen
[not found] ` <1457594332-7490-2-git-send-email-tqnguyen-qTEPVZfXA3Y@public.gmane.org>
2016-03-30 13:09 ` Felipe Balbi
2016-03-31 7:34 ` Thang Q. Nguyen
2016-03-31 8:04 ` Felipe Balbi
2016-03-10 7:18 ` [PATCH v3 2/2] usb:dwc3: pass arch data to xhci-hcd child Thang Q. Nguyen
2016-03-30 13:10 ` Felipe Balbi
2016-03-30 13:52 ` Grygorii Strashko [this message]
2016-03-30 13:55 ` Felipe Balbi
[not found] ` <87egashxz8.fsf-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-03-31 7:39 ` Thang Q. Nguyen
2016-03-31 8:04 ` Felipe Balbi
2016-03-31 15:07 ` Grygorii Strashko
[not found] ` <56FD3D2F.8070501-l0cyMroinI0@public.gmane.org>
2016-04-01 7:58 ` Felipe Balbi
2016-04-01 9:46 ` Grygorii Strashko
[not found] ` <56FE4378.3030205-l0cyMroinI0@public.gmane.org>
2016-04-01 10:20 ` Felipe Balbi
[not found] ` <87shz58wbw.fsf-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-04-01 11:00 ` Grygorii Strashko
[not found] ` <56FE54DB.5000201-l0cyMroinI0@public.gmane.org>
2016-04-01 11:57 ` Felipe Balbi
[not found] ` <878u0x8ru4.fsf-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2016-04-01 18:15 ` santosh shilimkar
[not found] ` <56FEBAC1.2040509-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
2016-04-04 6:28 ` Felipe Balbi
2016-04-04 16:11 ` santosh shilimkar
2016-04-05 5:18 ` Felipe Balbi
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