Re: [PATCH v6 2/8] dt-bindings: iio: dac: adi-axi-dac: add ad3552r axi variant

From: Angelo Dureghello
Date: Mon Oct 14 2024 - 15:26:14 EST


On 14.10.2024 20:20, Jonathan Cameron wrote:
> On Mon, 14 Oct 2024 16:04:35 +0200
> Angelo Dureghello <adureghello@xxxxxxxxxxxx> wrote:
>
> > Hi Rob,
> >
> > On 14.10.2024 08:38, Rob Herring wrote:
> > > On Mon, Oct 14, 2024 at 06:21:02AM -0500, Rob Herring (Arm) wrote:
> > > >
> > > > On Mon, 14 Oct 2024 12:08:08 +0200, Angelo Dureghello wrote:
> > > > > From: Angelo Dureghello <adureghello@xxxxxxxxxxxx>
> > > > >
> > > > > Add a new compatible and related bindigns for the fpga-based
> > > > > "ad3552r" AXI IP core, a variant of the generic AXI DAC IP.
> > > > >
> > > > > The AXI "ad3552r" IP is a very similar HDL (fpga) variant of the
> > > > > generic AXI "DAC" IP, intended to control ad3552r and similar chips,
> > > > > mainly to reach high speed transfer rates using a QSPI DDR
> > > > > (dobule-data-rate) interface.
> > > > >
> > > > > The ad3552r device is defined as a child of the AXI DAC, that in
> > > > > this case is acting as an SPI controller.
> > > > >
> > > > > Note, #io-backend is present because it is possible (in theory anyway)
> > > > > to use a separate controller for the control path than that used
> > > > > for the datapath.
> > > > >
> > > > > Signed-off-by: Angelo Dureghello <adureghello@xxxxxxxxxxxx>
> > > > > ---
> > > > > .../devicetree/bindings/iio/dac/adi,axi-dac.yaml | 56 ++++++++++++++++++++--
> > > > > 1 file changed, 53 insertions(+), 3 deletions(-)
> > > > >
> > > >
> > > > My bot found errors running 'make dt_binding_check' on your patch:
> > > >
> > > > yamllint warnings/errors:
> > > >
> > > > dtschema/dtc warnings/errors:
> > > > /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.example.dtb: dac@0: spi-max-frequency: 66000000 is greater than the maximum of 30000000
> > > > from schema $id: http://devicetree.org/schemas/iio/dac/adi,ad3552r.yaml#
> > >
> > > This is at least the third time this issue has been reported. Don't send
> > > more versions until you fix it.
> > >
> >
> > as stated in the patch message, this patch applies to linux-iio testing,
> > where there are no errors, from my tests.
> >
> > Error is due to the spi-max-frequency fix already applied in iio testing,
> > but still not where your bot is testing, proably in mainline.
>
> Whilst it's a fix, given the fix broadens the accepted range and doesn't matter
> until this patch (which will behind it) I currently have no intention
> of sending that fix until next merge window.
>
> Cynic in me says just change the example to a value under the old limit
> and bot will be happy. Example is just that, so doesn't have to reflect
> the maximum possible or even what people commonly run.
>
> Or include that patch again in this series with a note to say it's
> just here to ensure the base is correct for the bots.
>
> Jonathan

ack, if a next version is necessry, will do that.

Regards,
angelo

>
> >
> > Regards,
> > angelo
> >
> > > Rob
>