| Date | Wed, 16 Apr 2014 19:39:27 +0200 | From | Daniel Mack <> | Subject | Re: [PATCH v4 00/21] ARM: support for ICP DAS LP-8x4x (with dts) |
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Hi,
On 04/16/2014 07:13 PM, Sergei Ianovich wrote: > We had an intensive discussion of the series in the beginning of > December 2013 [1]. The discussion resulted in 3 versions of the series > in less than 3 weeks. Then there was a decision to block this series > until Daniel Mack's DMA-engine-for-PXA series is ready.
For whatever reason, I only received patches 1-8 out of 21 in this series.
> Unfortunately Daniel neigther agrees to review my trivial temporary > solution to the DMA-in-device-tree (patch 7 of 21), nor he is active > in DMA series development. There is no progress for 3 months.
Well, IIRC, I asked you to look into the MMC performance regressions that you reported and see what we can do about them. I currently don't have hardware to reproduce this, so I can't do it myself.
My impression is that the transisiton will only be painless if the mmp_pdma driver provides comparable performance to the existing implementation. I also still think that adding hacks to the drivers to manually parse the dma properties (as in #8) brings us further away from a proper solution, not closer.
> As with any big out of tree series, its support is painful. It requires > extensive merging when doing bisects, on each step.
I know that, and I'm not violently against getting your patches in. I was just hoping for some help around here in order to sort out things and implement it properly. The reason why I haven't been working on these drivers lately is simply the sheer lack of time :(
Thanks, Daniel
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