[PATCH v2 0/6] clk: sun6i-rtc: Add support for Allwinner A733 SoC

[Enzo Adriano]

Hi Jerome,

Thanks for reworking the A733 RTC support.

I ran v2 on a Radxa Cubie A7S. This is local validation evidence
only, not a hardware Tested-by.

For the A7S integration test, I stacked the series with the currently
visible public A733 CCU/PRCM v1 and pinctrl v1 prerequisites. Focused
RTC binding validation, targeted RTC/clk builds, and a Cubie A7S DTB
build all pass, and focused CHECK_DTBS=y shows no RTC, main CCU, or
R-CCU findings. The remaining findings in that base are unrelated
A733-wide schema gaps.

On A7S hardware the artifact boots cleanly to shell and the RTC driver
probes and registers as rtc0. While the board stays powered, RTC read,
write, and a short readback all work correctly; the readback advances
as expected.

I am deliberately not adding a Tested-by. The RTC value does not
survive a full power removal on this board: the published Cubie A7S
V1.10 schematic exposes the PMIC BKUPBAT pin but does not show a
connected backup battery or supercap path, and Radxa's A7S
documentation describes no populated RTC backup battery interface. So
I can confirm the driver is runtime-functional while powered, but I
cannot honestly attest cold-power persistence on this board.

Happy to rerun only the persistence phase if a valid VRTC/BKUPBAT
backup supply is identified or fitted.