linux-kernel - Re: [PATCH 1/2] dma: add Qualcomm Technologies HIDMA management driver

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Message-ID: <5633BB66.3070505@codeaurora.org>
Date:	Fri, 30 Oct 2015 14:48:06 -0400
From:	Sinan Kaya <okaya@...eaurora.org>
To:	Andy Shevchenko <andy.shevchenko@...il.com>,
	Mark Rutland <mark.rutland@....com>
Cc:	dmaengine <dmaengine@...r.kernel.org>, timur@...eaurora.org,
	cov@...eaurora.org, jcm@...hat.com,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Dan Williams <dan.j.williams@...el.com>,
	devicetree <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] dma: add Qualcomm Technologies HIDMA management
 driver



On 10/30/2015 2:40 PM, Andy Shevchenko wrote:
> On Fri, Oct 30, 2015 at 8:25 PM, Mark Rutland <mark.rutland@....com> wrote:
>
>>>> CSRT is an Intel specific ACPI table for slave devices.
>>>
>>> Wrong.
>>> It was designed by Microsoft to support multiple controllers, in
>>> particular DMACs.
>>> Have you read that document I posted link to?
>>>
Nope.

>>>> It was decided by
>>>> Linaro that CSRT will not be supported for ARM64.
>>>
>>> Interesting, ARM64 platforms are not going to have more than one DMAC
>>> per system?
>>
>> I cannot imagine that being true, and I don't see why Linaro would
>> decide such a thing.

See this.

https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/TablePriorities


>>
>> It does appear that it's not relevant to this device and driver, given
>> the lack of clients, unless I've misunderstood?
>
> Yeah, just a side note.
>
OK.

-- 
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a 
Linux Foundation Collaborative Project
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