Hi Biju,
On Sat, May 13, 2023 at 6:52 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>
> ---
> v2->v3:
> * Added more detailed description for renesas,rtc-enabled property.
Thanks for your patch!
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/renesas,raa215300.yaml
> + renesas,rtc-enabled:
> + description:
> + To indicate RTC is enabled on the PMIC.
> + Enabling of the RTC is based on system design. System designers may
> + choose not to populate built-in RTC by grounding XIN and XOUT pins.
> + type: boolean
Perhaps you should go full DT monty and replace this logic by a clocks
property pointing to the external crystal?
However, as I only have the Short-Form Datasheet, I am wondering what
"Built-in 32kHz crystal oscillator (with bypass)" really means?
Does this mean the RTC can work without an external crystal, using an
on-chip oscillator?
Thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
