linux-kernel - Re: [PATCH 1/3] ata: sata_dwc_460ex: use "dmas" DT property to find dma channel

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Message-ID: <CAHp75VfQ6jWm+W1kHh-4zqV28wF4OCCrBfSX8jXxsEcEYSsw5Q@mail.gmail.com>
Date:	Mon, 21 Dec 2015 19:55:53 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Julian Margetson <runaway@...dw.ms>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Måns Rullgård <mans@...sr.com>,
	Tejun Heo <tj@...nel.org>, linux-ide@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/3] ata: sata_dwc_460ex: use "dmas" DT property to find
 dma channel

On Mon, Dec 21, 2015 at 7:26 PM, Julian Margetson <runaway@...dw.ms> wrote:
> On 12/21/2015 12:48 PM, Andy Shevchenko wrote:
>>
>> On Sun, 2015-12-20 at 22:55 +0200, Andy Shevchenko wrote:
>>>
>>> On Sun, Dec 20, 2015 at 10:17 PM, Andy Shevchenko
>>> <andy.shevchenko@...il.com> wrote:
>>>>
>>>> On Sun, Dec 20, 2015 at 8:49 PM, Måns Rullgård <mans@...sr.com>
>>>> wrote:
>>>> I noticed thanks to DWC_PARAMS that burst size is hardcoded to 32
>>>> items on this board, however registers for SATA program it to 64. I
>>>> remember that I got no interrupt when I programmed transfer width
>>>> wrongly (64 bits against 32 bits) when I ported dw_dmac to be used
>>>> on
>>>> Intel SoCs.
>>>
>>> One more thing, I have a patch to monitor DMA IO, we may check what
>>> exactly the values are written / read  in DMA. I can share it
>>> tomorrow.
>>
>> As promised the patch I have to debug IO of DW DMA. Didn't check though
>> if it applies cleanly on top of recent vanilla kernel.

So, the original driver (with patch from Måns) works, right?

-- 
With Best Regards,
Andy Shevchenko
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