linux-kernel - Re: [PATCHv5 4/4] Documentation: Add device tree bindings for Freescale FTM PWM.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20131027135025.6C652C4039D@trevor.secretlab.ca>
Date:	Sun, 27 Oct 2013 13:50:25 +0000
From:	Grant Likely <grant.likely@...aro.org>
To:	Matt Porter <matt.porter@...aro.org>
Cc:	Xiubo Li <Li.Xiubo@...escale.com>, r65073@...escale.com,
	thierry.reding@...il.com, mark.rutland@....com,
	linux-pwm@...r.kernel.org, linux@....linux.org.uk,
	ian.campbell@...rix.com, pawel.moll@....com, swarren@...dotorg.org,
	s.hauer@...gutronix.de, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, rob.herring@...xeda.com,
	devicetree@...r.kernel.org, rob@...dley.net, t.figa@...sung.com,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCHv5 4/4] Documentation: Add device tree bindings for Freescale FTM PWM.

On Sat, 26 Oct 2013 09:02:25 -0400, Matt Porter <matt.porter@...aro.org> wrote:
> On Fri, Oct 25, 2013 at 09:12:11PM +0100, Grant Likely wrote:
> > On Mon, 30 Sep 2013 14:13:31 +0800, Xiubo Li <Li.Xiubo@...escale.com> wrote:
> > > This adds the Document for Freescale FTM PWM driver under
> > > Documentation/devicetree/bindings/pwm/.
> > > 
> > > Signed-off-by: Xiubo Li <Li.Xiubo@...escale.com>
> > > ---
> > >  .../devicetree/bindings/pwm/pwm-fsl-ftm.txt        | 33 ++++++++++++++++++++++
> > >  1 file changed, 33 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt
> > > 
> > > diff --git a/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt
> > > new file mode 100644
> > > index 0000000..2c6969a
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt
> > > @@ -0,0 +1,33 @@
> > > +Freescale FTM PWM controller
> > > +
> > > +Required properties:
> > > +- compatible: Should be "fsl,vf610-ftm-pwm"
> > > +- reg: Physical base address and length of the controller's registers
> > > +- #pwm-cells: Should be 3. See pwm.txt in this directory for a description of
> > > +  the cells format.
> > > +- clock-names : Includes the following module clock source entries:
> > > +    "ftm0" (system clock),
> > > +    "ftm0_fix_sel" (fixed frequency clock),
> > > +    "ftm0_ext_sel" (external clock)
> > > +- clocks : Must contain a clock specifier for each entry in clock-names.
> > > +- fsl,pwm-counter-clk: The FTM PWM counter clock source, should be one of the
> > > +  entries in clock-names.
> > > +- pinctrl-names: must contain a "default" entry.
> > > +- pinctrl-NNN: One property must exist for each entry in pinctrl-names.
> > > +  See ../pinctrl/pinctrl-bindings.txt for details of the property values.
> > 
> > Looks okay to me.
> 
> For consistency, shouldn't it also have:
> 
> "See ../clock/clock-bindings.txt for details of the property values"
> 
> where appropriate like is done under the pwm/pinctrl uses?
> 
> IMHO, referencing parent bindings all of the time should be a documented
> best practice / requirement.

I agree. In fact, it should be part of the requirements on schema
tooling that we discussed last week at ksummit (email summary will be
provided)

g.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/