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Date:   Thu, 16 Feb 2017 14:46:00 +0100
From:   Arnd Bergmann <>
Cc:     Andreas Färber <>,,,,,,
Subject: Re: [PATCH 00/11] ARM: Initial Actions Semi S500 and S900 enablement

On Wednesday, February 15, 2017 5:55:17 PM CET Andreas Färber wrote:
> Hello,
> Based on earlier work of mine for the LeMaker Guitar, this series adds initial
> support for the Actions Semiconductor S500 (ARMv7) and S900 (ARMv8) SoCs.
> Despite Actions Semi being a Linaro member since 2015, sadly I have not seen
> a single upstream kernel patch submission since. Nor has the XApple community
> taken any such initiative.
> The GitHub LeMaker/linux-actions and xapp-le/kernel trees have 3.10 based S500
> drivers in arch/arm/mach-owl/, whereas the 96boards-bubblegum/linux tree has
> new-style but still 3.10 based S900 drivers. I also spotted GPLv2+ vs. GPLv2
> license differences.
> This series therefore provides a proof of concept for a combined S500 and S900
> mainline implementation. Only earlycon serial output is available for now.
> Focusing on Bubblegum-96, no S500 clocksource implementation is provided yet,
> thus output on Guitar is less than on Bubblegum-96, but still it demonstrates
> that a single driver can be shared for both, using compatible strings for
> future differentiation.

Thanks for getting this started! It's unfortunately too late for 4.11 now,
but there should be no problem getting this merged into arm-soc early on
after the coming merge window.

I'd suggest keeping it as a set of patches for the moment, and we'll apply
them to the respective arm-soc branches as needed, with the exception of
the tty patch that should go through Greg's tree.

When you have addressed the review comments, please send the updated series


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