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

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Date:   Tue, 26 May 2020 10:09:15 -0600
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Serge Semin <fancer.lancer@...il.com>,
        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, 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>