Re: [linux-sunxi] [PATCH v2 0/3] Add basic support for RTC on Allwinner H6 SoC

From: Jernej Åkrabec
Date: Sat Aug 24 2019 - 04:05:26 EST


Dne torek, 20. avgust 2019 ob 17:19:31 CEST je megous@xxxxxxxxxx napisal(a):
> From: Ondrej Jirman <megous@xxxxxxxxxx>
> I went through the datasheets for H6 and H5, and compared the differences.
> RTCs are largely similar, but not entirely compatible. Incompatibilities
> are in details not yet implemented by the rtc driver though.
> I also corrected the clock tree in H6 DTSI.
> This patchset is necessary for implementing the WiFi/Bluetooth support
> on boards using H6 SoC.
> There was some discussion previously of describing HOSC, DCXO and XO
> oscillators and clocks as part of RTC in DT, but I decided against it
> because it's not necessary, becuse information that would be provided
> as a part of DT can already be determined at runtime from RTC registers,
> so this woudn't add any value and would only introduce complications
> to the driver. See:
> Please take a look.
> Thank you and regards,
> Ondrej Jirman

Sorry for a bit late test, but with your patches on Tanix TX6 box I get this
in dmesg:

[ 17.431742] sun6i-rtc 7000000.rtc: Failed to set rtc time.
[ 20.439742] sun6i-rtc 7000000.rtc: rtc is still busy.
[ 21.435744] sun6i-rtc 7000000.rtc: rtc is still busy.
[ 24.055741] sun6i-rtc 7000000.rtc: rtc is still busy.
[ 24.439752] sun6i-rtc 7000000.rtc: rtc is still busy.

Last line is repeated non-stop.

Any idea what could be wrong?

Best regards,