From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Johan Hovold <johan+linaro@kernel.org>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Bjorn Andersson <andersson@kernel.org>
Cc: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Jonathan Marek <jonathan@marek.ca>,
linux-arm-msm@vger.kernel.org, linux-rtc@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 7/7] arm64: dts: qcom: x1e80100: enable rtc
Date: Thu, 23 Jan 2025 13:26:41 +0100 [thread overview]
Message-ID: <3b085773-bc6e-4d03-a9f0-8f8444bdbd45@oss.qualcomm.com> (raw)
In-Reply-To: <20250120144152.11949-8-johan+linaro@kernel.org>
On 20.01.2025 3:41 PM, Johan Hovold wrote:
> On many Qualcomm platforms the PMIC RTC control and time registers are
> read-only so that the RTC time can not be updated. Instead an offset
> needs be stored in some machine-specific non-volatile memory, which a
> driver can take into account.
>
> On X1E based Windows on Arm machines the offset is stored in a Qualcomm
> specific UEFI variable.
>
> Unlike on previous platforms the alarm registers are also unaccessible
> on X1E as they are owned by the ADSP.
>
> Assume all X1E machines use similar firmware and enable the RTC in the
> PMIC dtsi for now.
>
> Based on a patch by Jonathan Marek. [1]
>
> Link: https://lore.kernel.org/r/20241015004945.3676-4-jonathan@marek.ca # [1]
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Konrad
next prev parent reply other threads:[~2025-01-23 12:26 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-20 14:41 [PATCH 0/7] arm64: dts: qcom: x1e80100: enable rtc Johan Hovold
2025-01-20 14:41 ` [PATCH 1/7] dt-bindings: rtc: qcom-pm8xxx: add uefi-variable offset Johan Hovold
2025-01-20 14:41 ` [PATCH 2/7] dt-bindings: rtc: qcom-pm8xxx: document qcom,no-alarm flag Johan Hovold
2025-01-27 18:00 ` Rob Herring (Arm)
2025-01-20 14:41 ` [PATCH 3/7] rtc: pm8xxx: add support for uefi offset Johan Hovold
2025-01-20 15:10 ` Sudeep Holla
2025-01-20 15:15 ` Johan Hovold
2025-01-20 15:17 ` Johan Hovold
2025-01-20 17:13 ` Sudeep Holla
2025-01-24 12:56 ` Tobias Heider
2025-01-24 14:07 ` Johan Hovold
2025-01-20 14:41 ` [PATCH 4/7] rtc: pm8xxx: mitigate flash wear Johan Hovold
2025-01-23 11:39 ` Johan Hovold
2025-01-20 14:41 ` [PATCH 5/7] rtc: pm8xxx: implement qcom,no-alarm flag for non-HLOS owned alarm Johan Hovold
2025-01-20 14:41 ` [PATCH 6/7] arm64: dts: qcom: sc8280xp-x13s: switch to uefi rtc offset Johan Hovold
2025-01-20 18:08 ` Jens Glathe
2025-01-23 12:26 ` Konrad Dybcio
2025-01-20 14:41 ` [PATCH 7/7] arm64: dts: qcom: x1e80100: enable rtc Johan Hovold
2025-01-20 18:12 ` Jens Glathe
2025-01-21 10:06 ` Johan Hovold
2025-01-23 12:26 ` Konrad Dybcio [this message]
2025-01-20 21:19 ` [PATCH 0/7] " Steev Klimaszewski
2025-01-21 10:06 ` Johan Hovold
2025-01-21 3:48 ` Joel Stanley
2025-01-21 10:07 ` Johan Hovold
2025-01-23 12:28 ` Konrad Dybcio
2025-01-25 18:46 ` Sebastian Reichel
2025-01-27 0:20 ` Rob Herring
2025-02-19 13:37 ` Johan Hovold
2025-04-21 14:36 ` Rob Clark
2025-04-22 13:39 ` Johan Hovold
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