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

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Message-ID: <20230316205041.vr6nrfbrrbwetng7@mobilestation>
Date:   Thu, 16 Mar 2023 23:50:41 +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,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH net-next 01/16] dt-bindings: net: dwmac: Validate PBL for
 all IP-cores

On Thu, Mar 16, 2023 at 03:40:37PM -0500, Rob Herring wrote:
> On Tue, Mar 14, 2023 at 08:09:45PM +0300, Serge Semin wrote:
> > 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...
> 

> Perhaps because you set DT_SCHEMA_FILES?

Can't remember now. I might have missed that in the long log as well.
Anyway I'll test it out one more time before fixing.
Thanks for your response.

-Serge(y)