* CCI-400 driver ARM V8 support
@ 2014-08-04 7:03 Xiaoguang Chen
[not found] ` <4737A960563B524DA805CA602BE04B30799875DBE8-r8ILAu4/owtq65YQV0AP9hL4W9x8LtSr@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: Xiaoguang Chen @ 2014-08-04 7:03 UTC (permalink / raw)
To: grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
robh+dt-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Hi, Grant, Rob
I'm checking arm cci-400 driver on mainline, and found it only supports ARM v7, but no ARM V8 support.
Do you have plan to support it? or it is under development?
Thanks
Xiaoguang
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^ permalink raw reply [flat|nested] 2+ messages in thread[parent not found: <4737A960563B524DA805CA602BE04B30799875DBE8-r8ILAu4/owtq65YQV0AP9hL4W9x8LtSr@public.gmane.org>]
* Re: CCI-400 driver ARM V8 support [not found] ` <4737A960563B524DA805CA602BE04B30799875DBE8-r8ILAu4/owtq65YQV0AP9hL4W9x8LtSr@public.gmane.org> @ 2014-08-04 14:33 ` Mark Rutland 0 siblings, 0 replies; 2+ messages in thread From: Mark Rutland @ 2014-08-04 14:33 UTC (permalink / raw) To: Xiaoguang Chen Cc: grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, robh+dt-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Hi, On Mon, Aug 04, 2014 at 08:03:18AM +0100, Xiaoguang Chen wrote: > > Hi, Grant, Rob > I'm checking arm cci-400 driver on mainline, and found it only > supports ARM v7, but no ARM V8 support. > Do you have plan to support it? or it is under development? The arm64 port doesn't do any coherency management within the kernel (this must be done by the firmware or bootloader), so the CCI-400 driver would be limited to a performance monitoring role. As far as I am aware, no one is actively working on factoring out the 32-bit dependencies such that the CCI-400 PMU code can be used on arm64. Thanks, Mark. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-08-04 7:03 CCI-400 driver ARM V8 support Xiaoguang Chen
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2014-08-04 14:33 ` Mark Rutland
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