linux-kernel - Re: [PATCH 4/9] dmaengine: pl330: add new items for pl330 private data

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Message-ID: <CAHp75Vf1pt5YvkxmwKGvJjjuJ9xF1y4M1XYEx_yGfUHpeA7iUA@mail.gmail.com>
Date:	Fri, 11 Dec 2015 15:56:38 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Vinod Koul <vinod.koul@...el.com>
Cc:	"Wang, Annie" <Annie.Wang@....com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Joerg Roedel <joro@...tes.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
	"dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	Borislav Petkov <bp@...en8.de>,
	"Huang, Ray" <Ray.Huang@....com>,
	"Wan, Vincent" <Vincent.Wan@....com>, "Xue, Ken" <Ken.Xue@....com>,
	"Li, Tony" <Tony.Li@....com>
Subject: Re: [PATCH 4/9] dmaengine: pl330: add new items for pl330 private data

On Fri, Dec 11, 2015 at 11:29 AM, Vinod Koul <vinod.koul@...el.com> wrote:
> On Thu, Dec 10, 2015 at 06:38:09AM +0000, Wang, Annie wrote:
>> >
>> >Why not DT or ACPI for this?
>> >
>> We choose to use private data, as pl330 already has  struct dma_pl330_platdata.
>> Physically DMA share ACPI device with UART, however, BIOS believes DMA and UART is one device.
>> We can't  get irq share info from ACPI. And we don't use DT.
>>
> That should be then a MFD device

And for me seems like acpi_amba and drivers shall utilize unified
device property API.

-- 
With Best Regards,
Andy Shevchenko
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