linux-kernel - Re: [linux-sunxi] Re: [PATCH v4 00/11] dmaengine: sun6i: Fixes for H3/A83T, enable A64

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Date:   Sat, 14 Oct 2017 11:21:51 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Vinod Koul <vinod.koul@...el.com>
Cc:     Stefan Brüns <stefan.bruens@...h-aachen.de>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        devicetree <devicetree@...r.kernel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Andre Przywara <andre.przywara@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Rob Herring <robh+dt@...nel.org>, dmaengine@...r.kernel.org,
        Code Kipper <codekipper@...il.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Mark Rutland <mark.rutland@....com>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [linux-sunxi] Re: [PATCH v4 00/11] dmaengine: sun6i: Fixes for
 H3/A83T, enable A64

Hi Vinod,

On Thu, Sep 28, 2017 at 11:26 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> On Thu, Sep 28, 2017 at 01:49:17AM +0000, Stefan Brüns wrote:
>> Commit 3a03ea763a67 ("dmaengine: sun6i: Add support for Allwinner A83T
>> (sun8i) variant") and commit f008db8c00c1 ("dmaengine: sun6i: Add support for
>> Allwinner H3 (sun8i) variant") added support for the A83T resp. H3, but missed
>> some differences between the original A31 and A83T/H3.
>>
>> The first patch adds a callback to the controller config to set the clock
>> autogating register of different SoC generations, i.e. A31, A23+A83T, H3+later,
>> and uses it to for the correct clock autogating setting.
>>
>> The second patch adds a callback for the burst length setting in the channel
>> config register, which has different field offsets and new burst widths/lengths,
>> which differs between H3 and earlier generations
>>
>> The third patch restructures some code required for the fourth patch and adds the
>> burst lengths to the controller config.
>>
>> The fourth patch adds the burst widths to the config and adds the handling of the
>> H3 specific burst widths.
>>
>> Patch 5 restructures the code to decouple some controller details (e.g. channel
>> count) from the compatible string/the config.
>>
>> Patches 6, 7 and 8 introduce and use the "dma-chans" property for the A64. Although
>> register compatible to the H3, the channel count differs and thus it requires a
>> new compatible. To avoid introduction of new compatibles for each minor variation,
>> anything but the register model is moved to devicetree properties. There
>> is at least one SoC (R40) which can then reuse the A64 compatible, the same
>> would have worked for A83T+V3s.
>>
>> Patches 9 and 10 add the DMA controller node to the devicetree and add the DMA
>> controller reference to the SPI nodes.
>>
>> Patch 11 fixes a small error in the devicetree binding example.
>
> Applied patches 9-11, thanks!
> Maxime

Can you pick up patches 1-8?

Thanks!
ChenYu