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

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Message-ID: <20200528123720.4wv2cmbownc4ejb7@mobilestation>
Date:   Thu, 28 May 2020 15:37:20 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Arnd Bergmann <arnd@...db.de>
CC:     Serge Semin <fancer.lancer@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        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 02:14:58PM +0200, Arnd Bergmann wrote:
> 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.

On the other hand if you haven't pushed the patches to the public repo yet,
I could just resend the series. So have you?

-Sergey

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


> 
>      Arnd