kernel/linux.git/drivers/rtc, branch v6.19.11

rtc: pcf8563: use correct of_node for output clock

2026-03-04T12:21:17+00:00

[ Upstream commit a380a02ea3ddc69c1c1ccca3882748dee33ec3d3 ] When switching to regmap, the i2c_client pointer was removed from struct pcf8563 so this function switched to using the RTC device instead. But the RTC device is a child of the original I2C device and does not have an associated of_node. Reference the correct device's of_node to ensure that the output clock can be found when referenced by other devices and so that the override clock name is read correctly. Cc: stable@vger.kernel.org Fixes: 00f1bb9b8486b ("rtc: pcf8563: Switch to regmap") Signed-off-by: John Keeping Link: https://patch.msgid.link/20260108184749.3413348-1-jkeeping@inmusicbrands.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin

rtc: zynqmp: correct frequency value

2026-03-04T12:20:50+00:00

[ Upstream commit 2724fb4d429cbb724dcb6fa17953040918ebe3a2 ] Fix calibration value in case a clock reference is provided. The actual calibration value written into register is frequency - 1. Reviewed-by: Harini T Tested-by: Harini T Signed-off-by: Tomas Melin Acked-by: Michal Simek Link: https://patch.msgid.link/20260122-zynqmp-rtc-updates-v4-1-d4edb966b499@vaisala.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin

rtc: interface: Alarm race handling should not discard preceding error

2026-03-04T12:19:30+00:00

[ Upstream commit 81be22cd4ace020045cc6d31255c6f7c071eb7c0 ] Commit 795cda8338ea ("rtc: interface: Fix long-standing race when setting alarm") should not discard any errors from the preceding validations. Prior to that commit, if the alarm feature was disabled, or the set_alarm failed, a meaningful error code would be returned to the caller for further action. After, more often than not, the __rtc_read_time will cause a success return code instead, misleading the caller. An example of this is when timer_enqueue is called for a rtc-abx080x device. Since that driver does not clear the alarm feature bit, but instead relies on the set_alarm operation to return invalid, the discard of the return code causes very different behaviour; i.e. hwclock: select() to /dev/rtc0 to wait for clock tick timed out Fixes: 795cda8338ea ("rtc: interface: Fix long-standing race when setting alarm") Signed-off-by: Anthony Pighin (Nokia) Reviewed-by: Esben Haabendal Tested-by: Nick Bowler Link: https://patch.msgid.link/BN0PR08MB6951415A751F236375A2945683D1A@BN0PR08MB6951.namprd08.prod.outlook.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin

rtc: max31335: use correct CONFIG symbol in IS_REACHABLE()

2026-03-04T12:19:25+00:00

[ Upstream commit d5aca9a17f6de884febc56018f92d743b8ea1298 ] IS_REACHABLE() is meant to be used with full symbol names from a kernel .config file, not the shortened symbols used in Kconfig files, so change HWMON to CONFIG_HWMON in 3 places. Fixes: dedaf03b99d6 ("rtc: max31335: add driver support") Signed-off-by: Randy Dunlap Acked-by: Nuno Sá Link: https://patch.msgid.link/20260108045432.2705691-1-rdunlap@infradead.org Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin

rtc: nvvrs: Add ARCH_TEGRA to the NV VRS RTC driver

2026-03-04T12:19:24+00:00

[ Upstream commit f9ecfd9bfedba9fd9d4b015b33b847571f7fdd42 ] The NV VRS RTC driver currently is only supported on the Tegra platform so add a dep for ARCH_TEGRA and compile test so it doesn't show up universally across all arches/platforms. Fixes: 9d6d6b06933c8 ("rtc: nvvrs: add NVIDIA VRS RTC device driver") Cc: Shubhi Garg Cc: Jon Hunter Signed-off-by: Peter Robinson Acked-by: Jon Hunter Link: https://patch.msgid.link/20251222035651.433603-1-pbrobinson@gmail.com Signed-off-by: Alexandre Belloni Signed-off-by: Sasha Levin

rtc: amlogic-a4: Remove IRQF_ONESHOT

2026-02-26T23:00:49+00:00

[ Upstream commit 18d28446231390e4ea3634fb16200865df2c6506 ] Passing IRQF_ONESHOT ensures that the interrupt source is masked until the secondary (threaded) handler is done. If only a primary handler is used then the flag makes no sense because the interrupt can not fire (again) while its handler is running. The flag also prevents force-threading of the primary handler and the irq-core will warn about this. Remove IRQF_ONESHOT from irqflags. Fixes: c89ac9182ee29 ("rtc: support for the Amlogic on-chip RTC") Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Reviewed-by: Xianwei Zhao Link: https://patch.msgid.link/20260128095540.863589-13-bigeasy@linutronix.de Signed-off-by: Sasha Levin

Merge tag 'rtc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

2025-12-13T05:09:06+00:00

Pull RTC updates from Alexandre Belloni: "Subsystem: - stop setting max_user_freq from the individual drivers as this has not been hardware related for a while New drivers: - Andes ATCRTC100 - Apple SMC - Nvidia VRS Drivers: - renesas-rtca3: add RZ/V2H support - tegra: add ACPI support" * tag 'rtc-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (34 commits) rtc: spacemit: MFD_SPACEMIT_P1 as dependencies rtc: atcrtc100: Fix signedness bug in probe() rtc: max31335: Fix ignored return value in set_alarm rtc: gamecube: Check the return value of ioremap() Documentation: ABI: testing: Fix "upto" typo in rtc-cdev rtc: Add new rtc-macsmc driver for Apple Silicon Macs dt-bindings: rtc: Add Apple SMC RTC MAINTAINERS: drop unneeded file entry in NVIDIA VRS RTC DRIVER rtc: isl12026: Add id_table rtc: renesas-rtca3: Add support for multiple reset lines dt-bindings: rtc: renesas,rz-rtca3: Add RZ/V2H support rtc: tegra: Replace deprecated SIMPLE_DEV_PM_OPS rtc: tegra: Add ACPI support rtc: tegra: Use devm_clk_get_enabled() in probe rtc: Kconfig: add MC34708 to mc13xxx help text rtc: s35390a: use u8 instead of char for register buffer rtc: nvvrs: add NVIDIA VRS RTC device driver dt-bindings: rtc: Document NVIDIA VRS RTC rtc: atcrtc100: Add ATCRTC100 RTC driver MAINTAINERS: Add entry for ATCRTC100 RTC driver ...

rtc: spacemit: MFD_SPACEMIT_P1 as dependencies

2025-12-08T22:02:10+00:00

RTC_DRV_SPACEMIT_P1 is a subdevice of P1 and should depend on MFD_SPACEMIT_P1 rather than selecting it directly. Using 'select' does not always respect the parent's dependencies, so 'depends on' is the safer and more correct choice. Additionally, the default value depends on MFD_SPACEMIT_P1 rather than ARCH_SPACEMIT. Signed-off-by: Troy Mitchell Acked-by: Alex Elder Link: https://patch.msgid.link/20251118-p1-kconfig-fix-v3-2-8839c5ac5db3@linux.spacemit.com Signed-off-by: Alexandre Belloni

rtc: atcrtc100: Fix signedness bug in probe()

2025-12-08T21:59:58+00:00

The "atcrtc_dev->alarm_irq" variable is an unsigned int but it needs to be signed for the error handling to work. Use the "ret" variable instead. Fixes: 7adca706fe16 ("rtc: atcrtc100: Add ATCRTC100 RTC driver") Signed-off-by: Dan Carpenter Link: https://patch.msgid.link/aRxPGBEX8hbY6sjV@stanley.mountain Signed-off-by: Alexandre Belloni

rtc: max31335: Fix ignored return value in set_alarm

2025-12-08T21:55:39+00:00

Return the result from regmap_update_bits() instead of ignoring it and always returning 0. Fixes: dedaf03b99d6 ("rtc: max31335: add driver support") Signed-off-by: Nuno Sá Link: https://patch.msgid.link/20251128-max31335-handler-error-v1-1-6b6f7f78dbda@analog.com Signed-off-by: Alexandre Belloni