linux-kernel - Re: [PATCH 1/6] dt-bindings: mfd: add max77759 binding

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Message-ID: <923badeacb9e52b78d276382ae8c06a47c44fbae.camel@linaro.org>
Date: Mon, 24 Feb 2025 13:02:23 +0000
From: André Draszik <andre.draszik@...aro.org>
To: "Rob Herring (Arm)" <robh@...nel.org>
Cc: Lee Jones <lee@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	devicetree@...r.kernel.org, Tudor Ambarus <tudor.ambarus@...aro.org>, Will
 McVicker <willmcvicker@...gle.com>, linux-gpio@...r.kernel.org,
 linux-hardening@...r.kernel.org,  "Gustavo A. R. Silva"	
 <gustavoars@...nel.org>, Kees Cook <kees@...nel.org>, Conor Dooley	
 <conor+dt@...nel.org>, Linus Walleij <linus.walleij@...aro.org>, 
	kernel-team@...roid.com, Peter Griffin <peter.griffin@...aro.org>, Srinivas
 Kandagatla <srinivas.kandagatla@...aro.org>, Bartosz Golaszewski
 <brgl@...ev.pl>, 	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/6] dt-bindings: mfd: add max77759 binding

On Mon, 2025-02-24 at 06:48 -0600, Rob Herring (Arm) wrote:
> 
> On Mon, 24 Feb 2025 10:28:49 +0000, André Draszik wrote:
> > Add device tree binding for the Maxim MAX77759 companion PMIC for USB
> > Type-C applications.
> > 
> > The MAX77759 includes Battery Charger, Fuel Gauge, temperature sensors,
> > USB Type-C Port Controller (TCPC), NVMEM, and a GPIO expander.
> > 
> > This describes the core mfd device.
> > 
> > Signed-off-by: André Draszik <andre.draszik@...aro.org>
> > ---
> >  .../devicetree/bindings/mfd/maxim,max77759.yaml    | 104 +++++++++++++++++++++
> >  MAINTAINERS                                        |   6 ++
> >  2 files changed, 110 insertions(+)
> > 
> 
> 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/mfd/maxim,max77759.example.dtb: pmic@66: gpio: False schema
> does not allow {'compatible': ['maxim,max77759-gpio'], 'gpio-controller': True, '#gpio-cells': 2, 'interrupt-controller': True,
> '#interrupt-cells': 2}
> 	from schema $id: http://devicetree.org/schemas/mfd/maxim,max77759.yaml#
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/mfd/maxim,max77759.example.dtb: pmic@66: pmic-nvmem: False
> schema does not allow {'compatible': ['maxim,max77759-nvmem'], 'nvmem-layout': {'compatible': ['fixed-layout'], '#address-cells': 1,
> '#size-cells': 1, 'reboot-mode@0': {'reg': [[0, 4]]}, 'boot-reason@4': {'reg': [[4, 4]]}, 'shutdown-user-flag@8': {'reg': [[8, 1]]},
> 'rsoc@10': {'reg': [[10, 2]]}}}
> 	from schema $id: http://devicetree.org/schemas/mfd/maxim,max77759.yaml#
> Documentation/devicetree/bindings/mfd/maxim,max77759.example.dtb: /example-0/i2c/pmic@...gpio: failed to match any schema with
> compatible: ['maxim,max77759-gpio']
> Documentation/devicetree/bindings/mfd/maxim,max77759.example.dtb: /example-0/i2c/pmic@...pmic-nvmem: failed to match any schema with
> compatible: ['maxim,max77759-nvmem']

The top-level example in here references the two (MFD cell)
bindings added in the two follow-up patches for gpio and
nvmem. When all three binding patches exist in the tree,
the errors are gone.

Is this acceptable, or shall I add the top-level example only
after the bindings?



Thanks,
Andre'