Re: [linux-sunxi] Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in sun8i's DMA engines a common quirk

From	Icenowy Zheng <icenowy@aosc.io>
Newsgroups	linux.kernel
Subject	Re: [linux-sunxi] Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in sun8i's DMA engines a common quirk
Date	2017-06-15 06:00 +0200
Message-ID	<tSu6R-5JO-1@gated-at.bofh.it> (permalink)
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于 2017年6月15日 GMT+08:00 上午11:54:08, Vinod Koul <vinod.koul@intel.com> 写到:
>On Wed, Jun 14, 2017 at 11:04:39AM +0200, Maxime Ripard wrote:
>> On Wed, Jun 14, 2017 at 02:15:29PM +0530, Vinod Koul wrote:
>> > > SoC info is in compatible, so there's no reason to make it a
>property.
>> > 
>> > that's why it would need to be optional for the SoC's that needs
>these..
>> 
>> There's nothing optional about that behaviour, it's mandatory for the
>> SoC that need it, and useless on the SoC that don't.
>
>And why should kernel put strings for each hw behaviour. I am expecting
>DT
>to tell me if this SoC is a special case or not and kernel shall handle
>accordingly

I don't think this kind of behavior should be described in DT.

Rob, do you agree?

>
>> Plus, that would require changing the DT binding, which isn't
>> something we can do.
>
>Any reason why bindings can't change..? I though this was support for
>new
>SoC...

This is a behavior that exists on a SoC that is already
supported (A23/A33).

Thread

Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in sun8i's DMA engines a common quirk Icenowy Zheng <icenowy@aosc.io> - 2017-06-14 10:40 +0200
  Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in sun8i's DMA  engines a common quirk Vinod Koul <vinod.koul@intel.com> - 2017-06-14 10:50 +0200
    Re: [linux-sunxi] Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in sun8i's DMA engines a common quirk Icenowy Zheng <icenowy@aosc.io> - 2017-06-14 11:00 +0200
    Re: [linux-sunxi] Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in  sun8i's DMA engines a common quirk Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-06-14 11:10 +0200
      Re: [linux-sunxi] Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in sun8i's DMA engines a common quirk Icenowy Zheng <icenowy@aosc.io> - 2017-06-15 06:00 +0200
      Re: [linux-sunxi] Re: [PATCH 1/2] dmaengine: sun6i: make gate bit in  sun8i's DMA engines a common quirk Vinod Koul <vinod.koul@intel.com> - 2017-06-15 06:00 +0200

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