linux-hardening - [PATCH 04/25] rtc: Add timestamp for the end of 2127

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Message-Id: <20250917-rda8810pl-drivers-v1-4-74866def1fe3@mainlining.org>
Date: Wed, 17 Sep 2025 03:07:21 +0700
From: Dang Huynh <dang.huynh@...nlining.org>
To: Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Bartosz Golaszewski <brgl@...ev.pl>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>, 
 Sebastian Reichel <sre@...nel.org>, Vinod Koul <vkoul@...nel.org>, 
 Kees Cook <kees@...nel.org>, "Gustavo A. R. Silva" <gustavoars@...nel.org>, 
 Ulf Hansson <ulf.hansson@...aro.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-unisoc@...ts.infradead.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-gpio@...r.kernel.org, linux-rtc@...r.kernel.org, 
 linux-clk@...r.kernel.org, linux-pm@...r.kernel.org, 
 dmaengine@...r.kernel.org, linux-hardening@...r.kernel.org, 
 linux-mmc@...r.kernel.org, Dang Huynh <dang.huynh@...nlining.org>
Subject: [PATCH 04/25] rtc: Add timestamp for the end of 2127

Some RTC (like MT2712 and RDA Micro) can handle until the end of
the year 2127.

Signed-off-by: Dang Huynh <dang.huynh@...nlining.org>
---
 include/linux/rtc.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/rtc.h b/include/linux/rtc.h
index 95da051fb155dab4c8ec72ccae7b8e12a117a7f1..ec5828ccc7449388da2ab8bc757030e6795ace30 100644
--- a/include/linux/rtc.h
+++ b/include/linux/rtc.h
@@ -175,6 +175,7 @@ struct rtc_device {
 #define RTC_TIMESTAMP_END_2063		2966371199LL /* 2063-12-31 23:59:59 */
 #define RTC_TIMESTAMP_END_2079		3471292799LL /* 2079-12-31 23:59:59 */
 #define RTC_TIMESTAMP_END_2099		4102444799LL /* 2099-12-31 23:59:59 */
+#define RTC_TIMESTAMP_END_2127		4985971199LL /* 2127-12-31 23:59:59 */
 #define RTC_TIMESTAMP_END_2199		7258118399LL /* 2199-12-31 23:59:59 */
 #define RTC_TIMESTAMP_END_9999		253402300799LL /* 9999-12-31 23:59:59 */

-- 
2.51.0