linux-kernel - Re: [PATCH v4 01/16] dt-bindings: regulator: ROHM BD72720

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Message-ID: <176313734261.3399634.14735602290463429362.robh@kernel.org>
Date: Fri, 14 Nov 2025 10:22:23 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Matti Vaittinen <matti.vaittinen@...ux.dev>
Cc: linux-kernel@...r.kernel.org,
	Michael Turquette <mturquette@...libre.com>,
	devicetree@...r.kernel.org,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Lee Jones <lee@...nel.org>, Sebastian Reichel <sre@...nel.org>,
	Mark Brown <broonie@...nel.org>, linux-clk@...r.kernel.org,
	Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
	linux-rtc@...r.kernel.org, Conor Dooley <conor+dt@...nel.org>,
	Andreas Kemnade <andreas@...nade.info>,
	Matti Vaittinen <mazziesaccount@...il.com>,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Pavel Machek <pavel@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	linux-leds@...r.kernel.org, linux-gpio@...r.kernel.org,
	Liam Girdwood <lgirdwood@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>, linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 01/16] dt-bindings: regulator: ROHM BD72720


On Thu, 13 Nov 2025 10:51:32 +0200, Matti Vaittinen wrote:
> From: Matti Vaittinen <mazziesaccount@...il.com>
> 
> The ROHM BD72720 is a new PMIC with 10 BUCk and 11 LDO regulators.
> 
> The BD72720 is designed to support using the BUCK10 as a supply for
> the LDOs 1 to 4. When the BUCK10 is used for this, it can be set to a
> LDON_HEAD mode. In this mode, the BUCK10 voltage can't be controlled by
> software, but the voltage is adjusted by PMIC to match the LDO1 .. LDO4
> voltages with a given offset. Offset can be 50mV .. 300mV and is
> changeable at 50mV steps.
> 
> Add 'ldon-head-microvolt' property to denote a board which is designed
> to utilize the LDON_HEAD mode.
> 
> All other properties are already existing.
> 
> Add dt-binding doc for ROHM BD72720 regulators to make it usable.
> 
> Signed-off-by: Matti Vaittinen <mazziesaccount@...il.com>
> 
> ---
> Revision history:
>  v3 => v4:
>  - Drop type from ldon-head
>  - Fix the name patterns for regulator nodes and names
> 
>  v2 => v3:
>  - drop unnecessary descriptions
>  - use microvolts for the 'ldon-head' dt-property
> 
>  RFCv1 => v2:
>  - No changes
> ---
>  .../regulator/rohm,bd72720-regulator.yaml     | 148 ++++++++++++++++++
>  1 file changed, 148 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd72720-regulator.yaml
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>