Re: [PATCH v3 3/7] dt-bindings: mfd: add binding for Apple Mac System Management Controller

[Lee Jones <lee@kernel.org>]

On Wed, 09 Nov 2022, Rob Herring wrote:

> On Tue, Nov 08, 2022 at 10:22:31PM +0000, Russell King (Oracle) wrote:
> > On Tue, Nov 08, 2022 at 09:55:58PM +0100, Krzysztof Kozlowski wrote:
> > > On 08/11/2022 17:33, Russell King (Oracle) wrote:
> > > > Add a DT binding for the Apple Mac System Management Controller.
> > > 
> > > Drop the second, redundant "binding" from subject. It's already in prefix.
> > 
> > Yet another thing that's been there from the start... how many more
> > things are you going to pick up in subsequent versions of the patch?
> > When does this stop?
> > 
> > In any case, taking your comment literally,
> > 
> > "dt-bindings: mfd: add for Apple Mac System Management Controller"
> > 
> > makes no sense, so presumably you want something more than that.
> > 
> > In any case, I see several recent cases already merged which follow
> > the pattern that I've used and that you've reviewed.
> > 
> > > > Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
> > > > ---
> > > >  .../devicetree/bindings/mfd/apple,smc.yaml    | 67 +++++++++++++++++++
> > > >  1 file changed, 67 insertions(+)
> > > >  create mode 100644 Documentation/devicetree/bindings/mfd/apple,smc.yaml
> > > > 
> > > > diff --git a/Documentation/devicetree/bindings/mfd/apple,smc.yaml b/Documentation/devicetree/bindings/mfd/apple,smc.yaml
> > > > new file mode 100644
> > > > index 000000000000..014eba5a1bbc
> > > > --- /dev/null
> > > > +++ b/Documentation/devicetree/bindings/mfd/apple,smc.yaml
> > > > @@ -0,0 +1,67 @@
> > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > > > +%YAML 1.2
> > > > +---
> > > > +$id: http://devicetree.org/schemas/mfd/apple,smc.yaml#
> > > > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > > > +
> > > > +title: Apple Mac System Management Controller
> > > > +
> > > > +maintainers:
> > > > +  - Hector Martin <marcan@marcan.st>
> > > > +
> > > > +description:
> > > > +  Apple Mac System Management Controller implements various functions
> > > > +  such as GPIO, RTC, power, reboot.
> > > > +
> > > > +properties:
> > > > +  compatible:
> > > > +    items:
> > > > +      - enum:
> > > > +          - apple,t6000-smc
> > > > +          - apple,t8103-smc
> > > > +          - apple,t8112-smc
> > > > +      - const: apple,smc
> > > > +
> > > > +  reg:
> > > > +    items:
> > > > +      - description: SMC area
> > > > +      - description: SRAM area
> > > > +
> > > > +  reg-names:
> > > > +    items:
> > > > +      - const: smc
> > > > +      - const: sram
> > > > +
> > > > +  mboxes:
> > > > +    maxItems: 1
> > > > +
> > > > +  gpio:
> > > > +    $ref: /schemas/gpio/gpio-macsmc.yaml
> > > 
> > > So this depends on other patch, so:
> > > 1. You need mention the dependency in cover letter (nothing there),
> > > 2. Re-order patches.
> > > 
> > > The GPIO cannot go separate tree and this must be explicitly communicated.
> > 
> > Sigh, getting an order that is sensible is really bloody difficult.
> 
> It's not. Sub-devices before the MFD. The only time that doesn't work is 
> when the sub-devices put the parent MFD in their example. The solution 
> there is don't do that. Just 1 complete example in the MFD schema and no 
> examples in the sub-devices.
> 
> > I'm quite sure Lee is only going to want to apply the mfd bits. 
> 
> Indeed. I can't seem to make Lee care... All the schemas should really 
> be applied together.

I care about drivers.  Happy to take the set as a whole if it helps.

-- 
Lee Jones [李琼斯]

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