linux-kernel - Re: [PATCH v3 4/6] bus: Add Baikal-T1 AXI-bus driver

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Date:   Thu, 28 May 2020 14:14:58 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Paul Burton <paulburton@...nel.org>,
        Olof Johansson <olof@...om.net>,
        Rob Herring <robh+dt@...nel.org>,
        "linux-mips@...r.kernel.org" <linux-mips@...r.kernel.org>,
        "soc@...nel.org" <soc@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 4/6] bus: Add Baikal-T1 AXI-bus driver

On Thu, May 28, 2020 at 12:01 AM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
> On Tuesday, May 26, 2020, Serge Semin <Sergey.Semin@...kalelectronics.ru> wrote:
>>
>> AXI3-bus is the main communication bus connecting all high-speed
>> peripheral IP-cores with RAM controller and MIPS P5600 cores on Baikal-T1
>> SoC. Bus traffic arbitration is done by means of DW AMBA 3 AXI
>> Interconnect (so called AXI Main Interconnect) routing IO requests from
>> one SoC block to another. This driver provides a way to detect any bus
>> protocol errors and device not responding situations by means of an
>> embedded on top of the interconnect errors handler block (EHB). AXI
>> Interconnect QoS arbitration tuning is currently unsupported.
>> The bus doesn't provide a way to detect the interconnected devices,
>> so they are supposed to be statically defined like by means of the
>> simple-bus sub-nodes.
>
>
>
> Few comments in case if you need a new version. Main point is about sysfs_streq().

I've applied the patch now and folded in fixes for the build warnings and
errors pointed out by the test robot, but I did not include the changes you
suggested.

Serge, could you send a follow-up patch to address those?

     Arnd