Dne sobota, 24. avgust 2019 ob 14:56:12 CEST je Ondřej Jirman napisal(a):

Hi,

On Sat, Aug 24, 2019 at 10:06:14AM +0200, Jernej Škrabec wrote:

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Dne sobota, 24. avgust 2019 ob 10:04:24 CEST je Jernej Škrabec napisal(a):

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Hi!

Dne torek, 20. avgust 2019 ob 17:19:31 CEST je megous@megous.com 

napisal(a):

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From: Ondrej Jirman <redacted>

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: https://patchwork.kernel.org/cover/10898083/

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?

Additional info - this is on kernel 5.2.6 with your patches applied.

Do you have schematics, or a FEX file for the board or any other info on how
the RTC is set up on that board?

Can you dump the RTC register range?

I have only Android DT, but as I already said in latest reply to patch 2, 
changing switch bypass to bit 14 instead of 15 solved all issues.

Best regards,
Jernej

regards,
	o.

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Best regards,
Jernej





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