Re: [PATCH v2] ARM: l2c: Add support for the "arm, shared-override" property
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2015-06-26 07:15:34
Also in:
linux-arm-kernel, linux-devicetree
Hi Hauke, On Thu, Jun 25, 2015 at 11:19 PM, Hauke Mehrtens [off-list ref] wrote:
On 06/02/2015 09:20 AM, Michal Simek wrote:quoted
On 05/15/2015 03:55 PM, Catalin Marinas wrote:quoted
On Fri, May 15, 2015 at 11:10:28AM +0100, Russell King - ARM Linux wrote:quoted
On Thu, May 07, 2015 at 05:02:57PM +0100, Catalin Marinas wrote:quoted
On Thu, May 07, 2015 at 11:27:11AM +0200, Geert Uytterhoeven wrote:quoted
diff --git a/Documentation/devicetree/bindings/arm/l2cc.txtb/Documentation/devicetree/bindings/arm/l2cc.txt index 0dbabe9a6b0abb91..2484aed78c86546d 100644 --- a/Documentation/devicetree/bindings/arm/l2cc.txt +++ b/Documentation/devicetree/bindings/arm/l2cc.txt @@ -67,6 +67,12 @@ Optional properties: disable if zero. - arm,prefetch-offset : Override prefetch offset value. Valid values are 0-7, 15, 23, and 31. +- arm,shared-override : The default behavior of the pl310 cache controller with + respect to the shareable attribute is to transform "normal memory + non-cacheable transactions" into "cacheable no allocate" (for reads) or + "write through no write allocate" (for writes). + On systems where this may cause DMA buffer corruption, this property must be + specified to indicate that such transforms are precluded.
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Acked-by: Catalin Marinas <catalin.marinas@arm.com>
I do not see this in linux-next, and would like to use this. Geert have you submitted this through this patch submission page? http://www.arm.linux.org.uk/developer/patches/
Thanks for reminding me!
Submitted with Catalin's Acked-by.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
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