linux-kernel - Re: [PATCH v5 1/2] dt-bindings: hwlock: add sun6i

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Date:   Thu, 7 Jan 2021 09:36:06 +0100
From:   Wilken Gottwalt <wilken.gottwalt@...teo.net>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     Rob Herring <robh+dt@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>
Subject: Re: [PATCH v5 1/2] dt-bindings: hwlock: add sun6i_hwspinlock

On Wed, 6 Jan 2021 11:14:36 +0100
Maxime Ripard <maxime@...no.tech> wrote:

> Hi,
> 
> On Wed, Dec 23, 2020 at 03:49:19PM -0700, Rob Herring wrote:
> > On Wed, Dec 23, 2020 at 4:34 AM Wilken Gottwalt
> > <wilken.gottwalt@...teo.net> wrote:
> > >
> > > Adds documentation on how to use the sun6i_hwspinlock driver for sun6i
> > > compatible SoCs.
> > 
> > Please resend to DT list so that automated checks run and it's in my
> > queue (PW). You need to run 'make dt_binding_check' as there are
> > several issues.
> > 
> > > Signed-off-by: Wilken Gottwalt <wilken.gottwalt@...teo.net>
> > > ---
> > > Changes in v5:
> > >   - changed binding to earliest known supported SoC sun6i-a31
> > >   - dropped unnecessary entries
> > >
> > > Changes in v4:
> > >   - changed binding to sun8i-a33-hwpinlock
> > >   - added changes suggested by Maxime Ripard
> > >
> > > Changes in v3:
> > >   - changed symbols from sunxi to sun8i
> > >
> > > Changes in v2:
> > >   - fixed memory ranges
> > > ---
> > >  .../bindings/hwlock/sun6i-a31-hwspinlock.yaml | 44 +++++++++++++++++++
> > >  1 file changed, 44 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml
> > >
> > > diff --git a/Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml
> > > b/Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml new file mode 100644
> > > index 000000000000..481c5c995ad7
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/hwlock/sun6i-a31-hwspinlock.yaml
> > > @@ -0,0 +1,44 @@
> > > +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
> > > +%YAML 1.2
> > > +---
> > > +$id: http://devicetree.org/schemas/hwlock/sun6i-hwspinlock.yaml#
> > 
> > This will fail checks. Wrong filename.
> 
> Also, the name should be the whole compatible, so
> "allwinner,sun6i-a31-hwspinlock.yaml".

Yes, I mixed it up a bit. I was a bit to tired this day. And changing the
names/symbols in the last minute didn't go well either.

> > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > +
> > > +title: SUN6I hardware spinlock driver for Allwinner sun6i compatible SoCs
> > > +
> > > +maintainers:
> > > +  - Wilken Gottwalt <wilken.gottwalt@...teo.net>
> > > +
> > > +description:
> > > +  The hardware unit provides semaphores between the ARM cores and the embedded
> > > +  companion core on the SoC.
> > > +
> > > +properties:
> > > +  compatible:
> > > +    const: allwinner,sun6i-a31-hwspinlock
> > > +
> > > +    reg:
> > > +      maxItems: 1
> > > +
> > > +    clocks:
> > > +      maxItems: 1
> > > +
> > > +    resets:
> > > +      maxItems: 1
> 
> And this is not indented properly, it should be at the same level than
> compatible, not under it. Doesn't the meta-schema catch this?

Hmm, yeah, this is odd. I need to check my scripts. The bindings stuff is
clearly not checked.

> Maxime