linux-kernel - Re: [PATCH net-next 01/16] dt-bindings: net: dwmac: Validate PBL for all IP-cores

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Date:   Tue, 14 Mar 2023 20:09:45 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Jakub Kicinski <kuba@...nel.org>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Biao Huang <biao.huang@...iatek.com>, netdev@...r.kernel.org,
        Christian Marangi <ansuelsmth@...il.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Richard Cochran <richardcochran@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH net-next 01/16] dt-bindings: net: dwmac: Validate PBL for
 all IP-cores

On Tue, Mar 14, 2023 at 06:07:01PM +0300, Serge Semin wrote:
> On Tue, Mar 14, 2023 at 09:10:19AM -0500, Rob Herring wrote:
> > 
> > On Tue, 14 Mar 2023 01:50:48 +0300, Serge Semin wrote:
> > > Indeed the maximum DMA burst length can be programmed not only for DW
> > > xGMACs, Allwinner EMACs and Spear SoC GMAC, but in accordance with [1]
> > > for Generic DW *MAC IP-cores. Moreover the STMMAC set of drivers parse
> > > the property and then apply the configuration for all supported DW MAC
> > > devices. All of that makes the property being available for all IP-cores
> > > the bindings supports. Let's make sure the PBL-related properties are
> > > validated for all of them by the common DW MAC DT schema.
> > > 
> > > [1] DesignWare Cores Ethernet MAC Universal Databook, Revision 3.73a,
> > >     October 2013, p. 380.
> > > 
> > > Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> > > Reviewed-by: Rob Herring <robh@...nel.org>
> > > 
> > > ---
> > > 
> > > Changelog v1:
> > > - Use correct syntax of the JSON pointers, so the later would begin
> > >   with a '/' after the '#'.
> > > ---
> > >  .../devicetree/bindings/net/snps,dwmac.yaml   | 77 +++++++------------
> > >  1 file changed, 26 insertions(+), 51 deletions(-)
> > > 
> > 
> > My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> > on your patch (DT_CHECKER_FLAGS is new in v5.13):
> > 
> > yamllint warnings/errors:
> > 
> > dtschema/dtc warnings/errors:
> > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.example.dtb: ethernet@...1c000: snps,txpbl:0:0: 1 is not one of [2, 4, 8]
> > 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.example.dtb: ethernet@...1c000: snps,rxpbl:0:0: 1 is not one of [2, 4, 8]
> > 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.example.dtb: ethernet@...1c000: snps,txpbl:0:0: 1 is not one of [2, 4, 8]
> > 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.example.dtb: ethernet@...1c000: snps,rxpbl:0:0: 1 is not one of [2, 4, 8]
> > 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.example.dtb: ethernet@...1c000: Unevaluated properties are not allowed ('interrupt-names', 'interrupts', 'mac-address', 'phy-mode', 'reg', 'snps,reset-delays-us', 'snps,reset-gpio', 'snps,rxpbl', 'snps,txpbl' were unexpected)
> > 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/mediatek-dwmac.yaml
> 
> Oops, on rebasing my work from older kernel I missed that the PBL
> properties constraints have already been extended. I'll drop the next
> patch in the series then and fix this one so the already defined
> constraints would be preserved.

BTW it's strange I didn't have that bug spotted during my
dt_binding_check run...

-Serge(y)

> 
> -Serge(y)
> 
> > 
> > doc reference errors (make refcheckdocs):
> > 
> > See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230313225103.30512-2-Sergey.Semin@baikalelectronics.ru
> > 
> > The base for the series is generally the latest rc1. A different dependency
> > should be noted in *this* patch.
> > 
> > If you already ran 'make dt_binding_check' and didn't see the above
> > error(s), then make sure 'yamllint' is installed and dt-schema is up to
> > date:
> > 
> > pip3 install dtschema --upgrade
> > 
> > Please check and re-submit after running the above command yourself. Note
> > that DT_SCHEMA_FILES can be set to your schema file to speed up checking
> > your schema. However, it must be unset to test all examples with your schema.
> >