linux-kernel - Re: [PATCH v2 14/19] dt-bindings: memory: snps: Detach Zynq DDRC controller support

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Date:   Fri, 16 Sep 2022 13:44:51 -0500
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Serge Semin <fancer.lancer@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Robert Richter <rric@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        Rob Herring <robh+dt@...nel.org>, linux-edac@...r.kernel.org,
        Manish Narani <manish.narani@...inx.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        devicetree@...r.kernel.org,
        Punnaiah Choudary Kalluri 
        <punnaiah.choudary.kalluri@...inx.com>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Michail Ivanov <Michail.Ivanov@...kalelectronics.ru>,
        linux-arm-kernel@...ts.infradead.org,
        Dinh Nguyen <dinguyen@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Tony Luck <tony.luck@...el.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        linux-kernel@...r.kernel.org, James Morse <james.morse@....com>
Subject: Re: [PATCH v2 14/19] dt-bindings: memory: snps: Detach Zynq DDRC
 controller support

On Sat, 10 Sep 2022 22:42:32 +0300, Serge Semin wrote:
> The Zynq A05 DDRC controller has nothing in common with DW uMCTL2 DDRC:
> the CSRs layout is absolutely different and it doesn't support IRQs unlike
> DW uMCTL2 DDR controller of all versions (v1.x, v2.x and v3.x). Thus there
> is no any reason to have these controllers described in the same bindings.
> Let's split the DT-schema up.
> 
> Note since the synopsys,ddrc-ecc.yaml schema describes the Synopsys DW
> uMCTL2 DDR controller only, we need to accordingly fix the device
> descriptions.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> 
> ---
> 
> Changelog v2:
> - Move Synopsys DW uMCTL2 DDRC bindings file renaming to a separate
>   patch. (@Krzysztof)
> ---
>  .../memory-controllers/synopsys,ddrc-ecc.yaml | 63 ++++++-------------
>  .../xlnx,zynq-ddrc-a05.yaml                   | 38 +++++++++++
>  MAINTAINERS                                   |  1 +
>  3 files changed, 59 insertions(+), 43 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/memory-controllers/xlnx,zynq-ddrc-a05.yaml
> 

Reviewed-by: Rob Herring <robh@...nel.org>