On Fri, 30 Aug 2024 16:02:11 +0300, Claudiu wrote:

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document the RTC IP (RTCA-3) available on the Renesas RZ/G3S SoC.
The RTC IP available on Renesas RZ/V2H is almost identical with the
one found on Renesas RZ/G3S (it misses the time capture functionality
which is not yet implemented on proposed driver). For this, added also a
generic compatible that will be used at the moment as fallback for both
RZ/G3S and RZ/V2H.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v3:
- added RTC bus clock, reset and power-domain; it has been detected
  by reverse engineering that RTC and VBATTB clock, reset and power
  domain are shared; HW manual doesn't mention it
- updated example with these and with assigned-clock properties
  needed to configure the VBATTCLK MUX with proper parent
- updated example section with dt-bindings/clock/r9a08g045-cpg.h
  and dt-bindings/clock/r9a08g045-vbattb.h includes
- for all these, dropped Conor's Rb tag

Changes in v2:
- updated patch description and title
- included reference to rtc.yaml
- updated compatible list with a generic compatible as explained in
  patch description; with this the node in examples section has also been
  updated
- used items to describe interrupts, interrupt-names, clock, clock-names
- updated title section

 .../bindings/rtc/renesas,rz-rtca3.yaml        | 86 +++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/renesas,rz-rtca3.yaml

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