RE: [PATCH v4 09/11] regulator: dt-bindings: Add Renesas RAA215300 PMIC bindings

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Hi Geert,

Thanks for the feedback.

> Subject: Re: [PATCH v4 09/11] regulator: dt-bindings: Add Renesas
> RAA215300 PMIC bindings
> 
> Hi Biju,
> 
> On Thu, May 18, 2023 at 1:37 PM Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> wrote:
> > Document Renesas RAA215300 PMIC bindings.
> >
> > The RAA215300 is a high Performance 9-Channel PMIC supporting DDR
> > Memory, with Built-In Charger and RTC.
> >
> > It supports DDR3, DDR3L, DDR4, and LPDDR4 memory power requirements.
> > The internally compensated regulators, built-in Real-Time Clock (RTC),
> > 32kHz crystal oscillator, and coin cell battery charger provide a
> > highly integrated, small footprint power solution ideal for
> > System-On-Module (SOM) applications. A spread spectrum feature
> > provides an ease-of-use solution for noise-sensitive audio or RF
> > applications.
> >
> > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > ---
> > v3->v4:
> >  * Moved bindings from mfd->regulator.
> >  * Dropped minItems from reg.
> >  * Dropped renesas,rtc-enabled property and instead used clock-names
> property
> >    to find RTC is enabled or not.
> >  * Added reg-names in required property.
> >  * Updated the example.
> 
> Thanks for your patch!
> 
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/regulator/renesas,raa215300.ya
> > +++ ml
> > @@ -0,0 +1,84 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2
> > +---
> > +$id:
> > +title: Renesas RAA215300 Power Management Integrated Circuit (PMIC)
> > +
> > +maintainers:
> > +  - Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > +
> > +description: |
> > +  The RAA215300 is a high-performance, low-cost 9-channel PMIC
> > +designed for
> > +  32-bit and 64-bit MCU and MPU applications. It supports DDR3,
> > +DDR3L, DDR4,
> > +  and LPDDR4 memory power requirements. The internally compensated
> > +regulators,
> > +  built-in Real-Time Clock (RTC), 32kHz crystal oscillator, and coin
> > +cell
> > +  battery charger provide a highly integrated, small footprint power
> > +solution
> > +  ideal for System-On-Module (SOM) applications. A spread spectrum
> > +feature
> > +  provides an ease-of-use solution for noise-sensitive audio or RF
> applications.
> > +
> > +  This device exposes two devices via I2C. One for the integrated RTC
> > + IP, and  one for everything else.
> > +
> > +  Link to datasheet:
> > +
> > + https://www.renesas.com/in/en/products/power-power-management/multi-
> > + channel-power-management-ics-pmics/ssdsoc-power-management-ics-pmic-
> > + and-pmus/raa215300-high-performance-9-channel-pmic-supporting-ddr-me
> > + mory-built-charger-and-rtc
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - renesas,raa215300
> > +
> > +  reg:
> > +    maxItems: 2
> > +
> > +  reg-names:
> > +    items:
> > +      - const: main
> > +      - const: rtc
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> 
> Perhaps add a description to make it clear that not providing clocks is
> supported, and means the RTC is disabled?

Agreed.

> 
> > +
> > +  clock-names:
> > +    description: |
> > +      Use xin, if connected to an external crystal.
> > +      Use clkin, if connected to an external clock signal.
> > +    oneOf:
> > +      - items:
> > +          - const: xin
> > +      - items:
> > +          - const: clkin
> 
> Please replace oneOf+items by enum.

OK.

Cheers,
Biju

> 
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - reg-names




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