Re: [PATCH v2 0/4] rtc: ingenic: various updates

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On 28/10/2022 23:55:15+0100, Paul Cercueil wrote:
> Hi Alessandro / Alexandre,
> 
> Here's the V2 of a previous patchset I sent back in April.
> 
> Patch [1/4] was updated with Krzysztof's feedback.
> 
> Patches 2-4 are unmodified from V1 as they didn't receive any feedback.
> Patch 4 is RFC; I *think* it works, but I don't know how to test it.
> 

You should simply adjust the RTC and see whether the drift changes. The
best is to simply use chrony as this will actually tell you how much the
RTC drifts. This actually gives you the exact value to put in offset to
remove the drift.

> V1 had a 5th patch which would reset the scratchpad register on power
> loss, but was dropped following upstream feedback.
> 
> Cheers,
> - Paul
> 
> Paul Cercueil (4):
>   dt-bindings: rtc: ingenic: Rework compatible strings and add #clock-cells
>   rtc: jz4740: Use readl_poll_timeout
>   rtc: jz4740: Register clock provider for the CLK32K pin
>   rtc: jz4740: Support for fine-tuning the RTC clock
> 
>  .../devicetree/bindings/rtc/ingenic,rtc.yaml  |  32 ++++-
>  drivers/rtc/rtc-jz4740.c                      | 113 +++++++++++++++---
>  2 files changed, 129 insertions(+), 16 deletions(-)
> 
> -- 
> 2.35.1
> 

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com



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