linux-kernel - Re: [PATCH v3 0/5] x1e80100 RTC support

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Message-ID: <Z45i7zOsATLzCxYf@hovoldconsulting.com>
Date: Mon, 20 Jan 2025 15:51:27 +0100
From: Johan Hovold <johan@...nel.org>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Jonathan Marek <jonathan@...ek.ca>
Cc: linux-arm-msm@...r.kernel.org, Bjorn Andersson <andersson@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:REAL TIME CLOCK (RTC) SUBSYSTEM" <linux-rtc@...r.kernel.org>,
	Rob Herring <robh@...nel.org>,
	Satya Priya <quic_c_skakit@...cinc.com>
Subject: Re: [PATCH v3 0/5] x1e80100 RTC support

Hi Alexandre and Jonathan,

On Mon, Jan 13, 2025 at 12:35:38AM +0100, Alexandre Belloni wrote:
> Did I miss v4 of this series?

We are still waiting for Qualcomm to provide a free and safe-to-use
allocation for the RTC offset in the PMIC.

I got tired of reminding the Qualcomm folks about this and instead
revived my patches for using the UEFI variable that the firmware (and
Windows) use for the offset.

I included Jonathan's v3 series after making the changes that we
discussed here (and a few more).

The result is here:

	https://lore.kernel.org/lkml/20250120144152.11949-1-johan+linaro@kernel.org/

and should allow us to enable the RTC on X1E today (and also avoids
running into the same SDAM allocation issue for the next platform).

> On 14/10/2024 20:47:25-0400, Jonathan Marek wrote:
> > x1e80100 needs a workaround because the RTC alarm is not owned by HLOS.
> > It also needs the same offset workaround as sc8280xp/etc.
> > 
> > v2: remove duplicated ops and use RTC_FEATURE_ALARM instead
> > v3:
> >  - renamed flag to qcom,no-alarm
> >  - don't remove alarm registers/interrupt from dts
> > 
> > Jonathan Marek (5):
> >   rtc: pm8xxx: implement qcom,no-alarm flag for non-HLOS owned alarm
> >   dt-bindings: rtc: qcom-pm8xxx: document qcom,no-alarm flag
> >   arm64: dts: qcom: x1e80100-pmics: enable RTC
> >   arm64: dts: qcom: x1e80100-crd: add rtc offset to set rtc time
> >   arm64: dts: qcom: x1e78100-t14s: add rtc offset to set rtc time

Johan