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From: "Jérôme de Bretagne via B4 Relay" <devnull+jerome.debretagne.gmail.com@kernel.org>
To: Bjorn Andersson <andersson@kernel.org>,
	 Konrad Dybcio <konradybcio@kernel.org>,
	Rob Herring <robh@kernel.org>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	Johan Hovold <johan@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	"Krzysztof Kozlowski" <krzk@kernel.org>,
	"Jérôme de Bretagne" <jerome.debretagne@gmail.com>,
	"Konrad Dybcio" <konrad.dybcio@oss.qualcomm.com>
Subject: [PATCH v3 09/10] arm64: dts: qcom: sc8280xp-arcata: Switch to uefi rtc offset
Date: Thu, 04 Jun 2026 18:18:45 +0200	[thread overview]
Message-ID: <20260604-surface-sp9-5g-for-next-v3-9-6aa6f6612c10@gmail.com> (raw)
In-Reply-To: <20260604-surface-sp9-5g-for-next-v3-0-6aa6f6612c10@gmail.com>

From: Jérôme de Bretagne <jerome.debretagne@gmail.com>

Align with the reference implementation from the ThinkPad X13s:

Switch to using the Qualcomm specific UEFI variable that is used by the
UEFI firmware (and Windows) to store the RTC offset.

Use the new 'qcom,uefi-rtc-info' property to indicate that the offset is
stored in a UEFI variable so that the OS can determine whether to wait
for it to become available.

Cc: Johan Hovold <johan@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
---
 arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts b/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts
index d1f72cddebf1df7b67be698a77656532d2f74766..60f65fd450ecba8196509a620be029314e5efc05 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-microsoft-arcata.dts
@@ -732,20 +732,11 @@ &pmk8280_pon_resin {
 };
 
 &pmk8280_rtc {
-	nvmem-cells = <&rtc_offset>;
-	nvmem-cell-names = "offset";
+	qcom,uefi-rtc-info;
 
 	status = "okay";
 };
 
-&pmk8280_sdam_6 {
-	status = "okay";
-
-	rtc_offset: rtc-offset@bc {
-		reg = <0xbc 0x4>;
-	};
-};
-
 &qup0 {
 	status = "okay";
 };

-- 
2.47.3



  parent reply	other threads:[~2026-06-04 16:18 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-04 16:18 [PATCH v3 00/10] Microsoft Surface Pro 9 5G update Jérôme de Bretagne via B4 Relay
2026-06-04 16:18 ` [PATCH v3 01/10] arm64: dts: qcom: sc8280xp-arcata: Enable backlight Jérôme de Bretagne via B4 Relay
2026-06-09  9:23   ` Konrad Dybcio
2026-06-04 16:18 ` [PATCH v3 02/10] arm64: dts: qcom: sc8280xp-arcata: Enable the eDP display Jérôme de Bretagne via B4 Relay
2026-06-09  9:23   ` Konrad Dybcio
2026-06-04 16:18 ` [PATCH v3 03/10] arm64: dts: qcom: sc8280xp-arcata: add USB-C orientation GPIOs Jérôme de Bretagne via B4 Relay
2026-06-04 16:18 ` [PATCH v3 04/10] arm64: dts: qcom: sc8280xp-arcata: Fix top USB-C DP alt mode Jérôme de Bretagne via B4 Relay
2026-06-04 16:18 ` [PATCH v3 05/10] arm64: dts: qcom: sc8280xp-arcata: Enable 4-lane DP support Jérôme de Bretagne via B4 Relay
2026-06-04 16:18 ` [PATCH v3 06/10] arm64: dts: qcom: sc8280xp-arcata: Add volume up/down GPIO keys Jérôme de Bretagne via B4 Relay
2026-06-04 16:18 ` [PATCH v3 07/10] arm64: dts: qcom: sc8280xp-arcata: Add lid switch Jérôme de Bretagne via B4 Relay
2026-06-04 16:18 ` [PATCH v3 08/10] arm64: dts: qcom: sc8280xp-arcata: model the PMU of the on-board wcn6855 Jérôme de Bretagne via B4 Relay
2026-06-08 14:15   ` Bartosz Golaszewski
2026-06-04 16:18 ` Jérôme de Bretagne via B4 Relay [this message]
2026-06-04 16:18 ` [PATCH v3 10/10] arm64: dts: qcom: sc8280xp-arcata: Drop duplicate DMIC supplies Jérôme de Bretagne via B4 Relay
2026-07-08 14:56 ` [PATCH v3 00/10] Microsoft Surface Pro 9 5G update Bjorn Andersson
2026-07-08 18:53   ` Jérôme de Bretagne

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