linux-kernel - Re: [PATCH v3 3/6] dt-bindings: memory: Add Baikal-T1 L2-cache Control Block binding

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Message-ID: <20200526161232.cmrn5iydtcffua2p@mobilestation>
Date:   Tue, 26 May 2020 19:12:32 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Rob Herring <robh@...nel.org>
CC:     Serge Semin <fancer.lancer@...il.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        <linux-kernel@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-mips@...r.kernel.org>, Arnd Bergmann <arnd@...db.de>,
        Olof Johansson <olof@...om.net>, <soc@...nel.org>,
        Paul Burton <paulburton@...nel.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 3/6] dt-bindings: memory: Add Baikal-T1 L2-cache
 Control Block binding

On Tue, May 26, 2020 at 10:09:15AM -0600, Rob Herring wrote:
> On Tue, 26 May 2020 15:59:25 +0300, Serge Semin wrote:
> > There is a single register provided by the SoC system controller,
> > which can be used to tune the L2-cache RAM up. It only provides a way
> > to change the L2-RAM access latencies. So aside from "be,bt1-l2-ctl"
> > compatible string the device node can be optionally equipped with the
> > properties of Tag/Data/WS latencies.
> > 
> > Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> > Cc: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
> > Cc: Paul Burton <paulburton@...nel.org>
> > Cc: Olof Johansson <olof@...om.net>
> > Cc: linux-mips@...r.kernel.org
> > Cc: soc@...nel.org
> > 
> > ---
> > 
> > Changelog v2:
> > - Move driver to the memory subsystem.
> > - Use dual GPL/BSD license.
> > - Use single lined copyright header.
> > - Move "allOf" restrictions to the root level of the properties.
> > - Discard syscon compatible string and reg property.
> > - The DT node is supposed to be a child of the Baikal-T1 system controller
> >   node.
> > 
> > Changelog v3:
> > - Get the reg property back even though the driver is using the parental
> >   syscon regmap.
> > - The DT schema will live separately from the system controller, but the
> >   corresponding sub-node of the later DT schema will $ref this one.
> > - Set non-default latencies in the example.
> > ---
> >  .../memory-controllers/baikal,bt1-l2-ctl.yaml | 63 +++++++++++++++++++
> >  1 file changed, 63 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/memory-controllers/baikal,bt1-l2-ctl.yaml
> > 
> 
> Reviewed-by: Rob Herring <robh@...nel.org>

Great! Thanks.

-Sergey