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2025-12-08rtc: Add new rtc-macsmc driver for Apple Silicon MacsHector Martin
Apple Silicon Macs (M1, etc.) have an RTC that is part of the PMU IC, but most of the PMU functionality is abstracted out by the SMC. On T600x machines, the RTC counter must be accessed via the SMC to get full functionality, and it seems likely that future machines will move towards making SMC handle all RTC functionality. The SMC RTC counter access is implemented on all current machines as of the time of this writing, on firmware 12.x. However, the RTC offset (needed to set the time) is still only accessible via direct PMU access. To handle this, we expose the RTC offset as an NVMEM cell from the SPMI PMU device node, and this driver consumes that cell and uses it to compute/set the current time. Reviewed-by: Neal Gompa <neal@gompa.dev> Signed-off-by: Hector Martin <marcan@marcan.st> Signed-off-by: Sven Peter <sven@kernel.org> Signed-off-by: James Calligeros <jcalligeros99@gmail.com> Link: https://patch.msgid.link/20251112-macsmc-subdevs-v5-3-728e4b91fe81@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-11-06rtc: nvvrs: add NVIDIA VRS RTC device driverShubhi Garg
Add support for NVIDIA VRS (Voltage Regulator Specification) RTC device driver. NVIDIA VRS is a Power Management IC (PMIC) that implements a power sequencing solution with I2C interface. The device includes RTC which provides functionality to get/set system time, retain system time across boot, wake system from suspend and shutdown state. Supported platforms: - NVIDIA Jetson AGX Orin Developer Kit - NVIDIA IGX Orin Development Kit - NVIDIA Jetson Orin NX Developer Kit - NVIDIA Jetson Orin Nano Developer Kit Signed-off-by: Shubhi Garg <shgarg@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251007135738.487694-4-shgarg@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-11-06rtc: atcrtc100: Add ATCRTC100 RTC driverCL Wang
RTC driver for Andes ATCRTC100 Real-Time Clock. Signed-off-by: CL Wang <cl634@andestech.com> Link: https://patch.msgid.link/20250915031439.2680364-4-cl634@andestech.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-11Merge tag 'rtc-6.18' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "This cycle, we have a new RTC driver, for the SpacemiT P1. The optee driver gets alarm support. We also get a fix for a race condition that was fairly rare unless while stress testing the alarms. Subsystem: - Fix race when setting alarm - Ensure alarm irq is enabled when UIE is enabled - remove unneeded 'fast_io' parameter in regmap_config New driver: - SpacemiT P1 RTC Drivers: - efi: Remove wakeup functionality - optee: add alarms support - s3c: Drop support for S3C2410 - zynqmp: Restore alarm functionality after kexec transition" * tag 'rtc-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (29 commits) rtc: interface: Ensure alarm irq is enabled when UIE is enabled rtc: tps6586x: Fix initial enable_irq/disable_irq balance rtc: cpcap: Fix initial enable_irq/disable_irq balance rtc: isl12022: Fix initial enable_irq/disable_irq balance rtc: interface: Fix long-standing race when setting alarm rtc: pcf2127: fix watchdog interrupt mask on pcf2131 rtc: zynqmp: Restore alarm functionality after kexec transition rtc: amlogic-a4: Optimize global variables rtc: sd2405al: Add I2C address. rtc: Kconfig: move symbols to proper section rtc: optee: make optee_rtc_pm_ops static rtc: optee: Fix error code in optee_rtc_read_alarm() rtc: optee: fix error code in probe() dt-bindings: rtc: Convert apm,xgene-rtc to DT schema rtc: spacemit: support the SpacemiT P1 RTC rtc: optee: add alarm related rtc ops to optee rtc driver rtc: optee: remove unnecessary memory operations rtc: optee: fix memory leak on driver removal rtc: x1205: Fix Xicor X1205 vendor prefix dt-bindings: rtc: Fix Xicor X1205 vendor prefix ...
2025-09-16rtc: spacemit: support the SpacemiT P1 RTCAlex Elder
Add support for the RTC found in the SpacemiT P1 PMIC. Initially only setting and reading the time are supported. The PMIC is implemented as a multi-function device. This RTC is probed based on this driver being named in a MFD cell in the simple MFD I2C driver. Signed-off-by: Alex Elder <elder@riscstar.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20250825172057.163883-5-elder@riscstar.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-09-16rtc: Add Nuvoton NCT6694 RTC supportMing Yu
This driver supports RTC functionality for NCT6694 MFD device based on USB interface. Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Ming Yu <a0282524688@gmail.com> Link: https://lore.kernel.org/r/20250912091952.1169369-8-a0282524688@gmail.com Signed-off-by: Lee Jones <lee@kernel.org>
2025-07-22rtc: Rename lib_test to test_rtc_libGeert Uytterhoeven
When compiling the RTC library functions test as a module, the module has the non-descriptive name "lib_test.ko". Fix this by renaming it to "test_rtc_lib.ko". Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/r/47019d7f8ced12107b54a372fdf34b1b8f7b6183.1751355848.git.geert@linux-m68k.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-05-25rtc: s32g: add NXP S32G2/S32G3 SoC supportCiprian Marian Costea
Add a RTC driver for NXP S32G2/S32G3 SoCs. RTC tracks clock time during system suspend. It can be a wakeup source for the S32G2/S32G3 SoC based boards. The RTC module from S32G2/S32G3 is not battery-powered and it is not kept alive during system reset. Co-developed-by: Bogdan Hamciuc <bogdan.hamciuc@nxp.com> Signed-off-by: Bogdan Hamciuc <bogdan.hamciuc@nxp.com> Co-developed-by: Ghennadi Procopciuc <Ghennadi.Procopciuc@nxp.com> Signed-off-by: Ghennadi Procopciuc <Ghennadi.Procopciuc@nxp.com> Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Tested-by: Enric Balletbo i Serra <eballetbo@kernel.org> Link: https://lore.kernel.org/r/20250403103346.3064895-3-ciprianmarian.costea@oss.nxp.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-05-25rtc: sophgo: add rtc support for Sophgo CV1800 SoCJingbao Qiu
Implement the RTC driver for CV1800, which able to provide time alarm. Signed-off-by: Jingbao Qiu <qiujingbao.dlmu@gmail.com> Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Link: https://lore.kernel.org/r/20250507195626.502240-1-alexander.sverdlin@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-03-17rtc: pcf50633: RemoveDr. David Alan Gilbert
The pcf50633 was used as part of the OpenMoko devices but the support for its main chip was recently removed in: commit 61b7f8920b17 ("ARM: s3c: remove all s3c24xx support") See https://lore.kernel.org/all/Z8z236h4B5A6Ki3D@gallifrey/ Remove it. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Link: https://lore.kernel.org/r/20250311014959.743322-3-linux@treblig.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-11-12rtc: support for the Amlogic on-chip RTCYiting Deng
This is the third amlogic driver. The RTC hardware of A4 SoC is different from the previous one. This RTC hardware includes a timing function and an alarm function. But the existing has only timing function, alarm function is using the system clock to implement a virtual alarm. Add the RTC driver to support it. Signed-off-by: Yiting Deng <yiting.deng@amlogic.com> Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com> Link: https://lore.kernel.org/r/20241112-rtc-v6-2-a71b60d2f354@amlogic.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-11-11rtc: add driver for Marvell 88PM886 PMIC RTCKarel Balej
RTC lives on the chip's base register page. Add the relevant register definitions and implement a basic set/read time functionality. Tested with the samsung,coreprimevelte smartphone which contains this PMIC and whose vendor kernel tree has also served as the sole reference for this. Signed-off-by: Karel Balej <balejk@matfyz.cz> Acked-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20241012193345.18594-2-balejk@matfyz.cz Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-11-10rtc: Makefile: Replace spaces with tab.Tóth János
Fix a style error. Signed-off-by: Tóth János <gomba007@gmail.com> Link: https://lore.kernel.org/r/20240930-rtc-makefile-spaces-v1-1-e936e0a7b02a@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-11-01rtc: renesas-rtca3: Add driver for RTCA-3 available on Renesas RZ/G3S SoCClaudiu Beznea
The RTC IP (RTCA-3) available on the Renesas RZ/G3S SoC has calendar count mode and binary count mode (selectable though RCR2.CNTMD) capabilities, alarm capabilities, clock error correction capabilities. It can generate alarm, period, carry interrupts. Add a driver for RTCA-3 IP. The driver implements calendar count mode (as the conversion b/w RTC and system time is simpler, done with bcd2bin(), bin2bcd()), read and set time, read and set alarm, read and set an offset. Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Link: https://lore.kernel.org/r/20241030110120.332802-6-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-09-25Merge tag 'rtc-6.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "More conversions of DT bindings to yaml. There is one new driver, for the DFRobot SD2405AL and support for important features of the stm32 RTC. Summary: New driver: - DFRobot SD2405AL Drivers: - stm32: add alarm A out and LSCO support - sun6i: disable automatic clock input switching - m48t59: set range" * tag 'rtc-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: rtc: rc5t619: use proper module tables rtc: m48t59: set range dt-bindings: rtc: microcrystal,rv3028: add #clock-cells property rtc: m48t59: Remove division condition with direct comparison rtc: at91sam9: fix OF node leak in probe() error path rtc: sun6i: disable automatic clock input switching dt-bindings: rtc: Drop non-trivial duplicate compatibles dt-bindings: vendor-prefixes: Add DFRobot. dt-bindings: rtc: Add support for SD2405AL. rtc: Add driver for SD2405AL rtc: s35390a: Drop vendorless compatible string from match table rtc: twl: convert comma to semicolon dt-bindings: rtc: sprd,sc2731-rtc: convert to YAML rtc: stm32: add alarm A out feature rtc: stm32: add Low Speed Clock Output (LSCO) support rtc: stm32: add pinctrl and pinmux interfaces dt-bindings: rtc: stm32: describe pinmux nodes
2024-09-12rtc: Add driver for SD2405ALTóth János
Add support for the DFRobot SD2405AL I2C RTC Module. Datasheet: https://image.dfrobot.com/image/data/TOY0021/SD2405AL%20datasheet%20(Angelo%20v0.1).pdf Product: https://www.dfrobot.com/product-1600.html To instantiate (assuming device is connected to I2C-1) as root: echo sd2405al 0x32 > /sys/bus/i2c/devices/i2c-1/new_device as user: echo 'sd2405al 0x32' | sudo tee /sys/class/i2c-adapter/i2c-1/new_device The driver is tested with: + hwclock + tools/testing/selftests/rtc/setdate + tools/testing/selftests/rtc/rtctest Reviewed-by: Csókás Bence <csokas.bence@prolan.hu> Signed-off-by: Tóth János <gomba007@gmail.com> Link: https://lore.kernel.org/r/20240830-rtc-sd2405al-v7-1-2f7102621b1d@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-08-28rtc: support i.MX95 BBM RTCPeng Fan
The BBM module provides RTC feature. To i.MX95, this module is managed by System Manager and exported System Control Management Interface(SCMI). Linux could use i.MX SCMI BBM Extension protocol to use RTC feature. This driver is to use SCMI interface to get/set RTC. Reviewed-by: Cristian Marussi <cristian.marussi@arm.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Message-Id: <20240823-imx95-bbm-misc-v2-v8-6-e600ed9e9271@nxp.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2024-04-17rtc: Add driver for Epson RX8111Waqar Hameed
Epson RX8111 is an RTC with alarm, timer and timestamp functionality. Add a basic driver with support for only reading/writing time (for now). Signed-off-by: Waqar Hameed <waqar.hameed@axis.com> Link: https://lore.kernel.org/r/0c3e1b03f276da47b26ac50f5d0ddf5c67aabe5c.1700491765.git.waqar.hameed@axis.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-01-15rtc: max31335: add driver supportAntoniu Miclaus
RTC driver for MAX31335 ±2ppm Automotive Real-Time Clock with Integrated MEMS Resonator. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231120120114.48657-2-antoniu.miclaus@analog.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-01-08rtc: tps6594: Add driver for TPS6594 RTCEsteban Blanc
TPS6594 PMIC is a MFD. This patch adds support for the RTC found inside TPS6594 family of PMIC. Alarm is also supported. Signed-off-by: Esteban Blanc <eblanc@baylibre.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Tested-by: Thomas Richard <thomas.richard@bootlin.com> Link: https://lore.kernel.org/r/20231107094701.2223486-1-eblanc@baylibre.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2023-12-17rtc: Add driver for Nuvoton ma35d1 rtc controllerJacky Huang
The ma35d1 rtc controller provides real-time and calendar messaging capabilities. It supports programmable time tick and alarm match interrupts. The time and calendar messages are expressed in BCD format. This driver supports the built-in rtc controller of the ma35d1. It enables setting and reading the rtc time and configuring and reading the rtc alarm. Signed-off-by: Jacky Huang <ychuang3@nuvoton.com> Link: https://lore.kernel.org/r/20230925070251.28-4-ychuang570808@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2023-10-16rtc: Add support for the SSD202D RTCRomain Perier
Newer SigmaStar SSD202D SoCs contain a Real Time Clock, capable of running while the system is sleeping (battery powered), this is not the case with the other RTC on older SoCs. This adds basic support for this RTC block. Signed-off-by: Romain Perier <romain.perier@gmail.com> Co-developed-by: Daniel Palmer <daniel@0x0f.com> Signed-off-by: Daniel Palmer <daniel@0x0f.com> Link: https://lore.kernel.org/r/20230913151606.69494-2-romain.perier@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2023-06-26rtc: Add rtc driver for the Loongson family chipsBinbin Zhou
The Loongson family chips use an on-chip counter 0 (Time Of Year counter) as the RTC. We will refer to them as rtc-loongson. Cc: Keguang Zhang <keguang.zhang@gmail.com> Cc: Yang Ling <gnaygnil@gmail.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@kernel.org> Signed-off-by: WANG Xuerui <git@xen0n.name> Reviewed-by: Keguang Zhang <keguang.zhang@gmail.com> Tested-by: Keguang Zhang <keguang.zhang@gmail.com> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com> # LS7A Link: https://lore.kernel.org/r/0c5171156390f614d72f36ceb04a20f432ca639e.1685693501.git.zhoubinbin@loongson.cn Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2023-06-26rtc: Remove the Loongson-1 RTC driverBinbin Zhou
Remove the ls1x-rtc driver as it is obsolete. We will continue to support the ls1x RTC in the upcoming Loongson unified RTC driver rtc-loongson. Cc: Keguang Zhang <keguang.zhang@gmail.com> Cc: zhao zhang <zhzhl555@gmail.com> Cc: Yang Ling <gnaygnil@gmail.com> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn> Acked-by: Keguang Zhang <keguang.zhang@gmail.com> Link: https://lore.kernel.org/r/c38c666015a162d7031b20a48209ce577bab62cd.1685693501.git.zhoubinbin@loongson.cn Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2023-03-03Merge tag 'rtc-6.3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "A few drivers got some nice cleanups and a new driver are making the bulk of the changes. Subsystem: - allow rtc_read_alarm without read_alarm callback New driver: - NXP BBNSM module RTC Drivers: - use IRQ flags from fwnode when available - abx80x: nvmem support - brcmstb-waketimer: add non-wake alarm support - ingenic: provide CLK32K clock - isl12022: cleanups - moxart: switch to using gpiod API - pcf85363: allow setting quartz load - pm8xxx: cleanups and support for setting time - rv3028, rv3032: add ACPI support" * tag 'rtc-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (64 commits) rtc: pm8xxx: add support for nvmem offset dt-bindings: rtc: qcom-pm8xxx: add nvmem-cell offset rtc: abx80x: Add nvmem support rtc: rx6110: Remove unused of_gpio,h rtc: efi: Avoid spamming the log on RTC read failure rtc: isl12022: sort header inclusion alphabetically rtc: isl12022: Join string literals back rtc: isl12022: Drop unneeded OF guards and of_match_ptr() rtc: isl12022: Explicitly use __le16 type for ISL12022_REG_TEMP_L rtc: isl12022: Get rid of unneeded private struct isl12022 rtc: pcf85363: add support for the quartz-load-femtofarads property dt-bindings: rtc: nxp,pcf8563: move pcf85263/pcf85363 to a dedicated binding rtc: allow rtc_read_alarm without read_alarm callback rtc: rv3032: add ACPI support rtc: rv3028: add ACPI support rtc: bbnsm: Add the bbnsm rtc support rtc: jz4740: Register clock provider for the CLK32K pin rtc: jz4740: Use dev_err_probe() rtc: jz4740: Use readl_poll_timeout dt-bindings: rtc: Add #clock-cells property ...
2023-02-22rtc: bbnsm: Add the bbnsm rtc supportJacky Bai
The BBNSM module includes a real time counter with alarm. Add a RTC driver for this function. Signed-off-by: Jacky Bai <ping.bai@nxp.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20230215024117.3357341-3-ping.bai@nxp.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2023-02-01rtc: remove v3020 driverArnd Bergmann
The v3020 RTC driver was exclusively used by the now removed cm-x300.c machine. Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: linux-kernel@vger.kernel.org Cc: linux-rtc@vger.kernel.org Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-12-21Merge tag 'mfd-next-6.2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "New Drivers: - Add support for Ampere Computing SMpro - Add support for TI TPS65219 PMIC New Functionality: - Add support for multiple devices of the same type; rk808 Fix-ups: - Convert a bunch of I2C class drivers over to .probe_new() - Remove superfluous includes; mc13xxx-*, palmas, timberdale - Use correct includes for GPIO handling; madera-core - Convert to GPIOD; twl6040 - Remove unused platform data handling; twl6040 - Device Tree changes; many - Remove unused drivers; dm355evm_msp, davinci_voicecodec, htc-i2cpld - Add support for modules; palmas - Enable COMPILE_TEST support; intel_soc_pmic* - Trivial: spelling / whitespace fixes; mc13xxx-spi - Replace old PM helpers with new ones; many - Convert deprecated mask_invert usage to unmask_base; many - Use devm_*() calls; qcom_rpm - MAINTAINER fix-ups - Make use of improved / replaced APIs; palmas, fsl-imx25-tsadc, stm32-lptimer, qcom_rpm, rohm-* Bug Fixes: - Add bounds / error checking; mt6360-core - No sleeping inside critical sections; axp20x - Fix missing dependencies; ROHM_BD957XMUF - Repair error paths; qcom-pm8008" * tag 'mfd-next-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (161 commits) dt-bindings: mfd: da9062: Correct file name for watchdog mfd: pm8008: Fix return value check in pm8008_probe() mfd: rohm: Use dev_err_probe() mfd: Drop obsolete dependencies on COMPILE_TEST dt-bindings: mfd: da9062: Move IRQ to optional properties mfd: qcom_rpm: Use devm_of_platform_populate() to simplify code mfd: qcom_rpm: Fix an error handling path in qcom_rpm_probe() mfd: stm32-lptimer: Use devm_platform_get_and_ioremap_resource() mfd: rohm-bd9576: Convert to i2c's .probe_new() mfd: fsl-imx25-tsadc: Use devm_platform_get_and_ioremap_resource() dt-bindings: Fix maintainer email for a few ROHM ICs mfd: palmas: Use device_get_match_data() to simplify the code Input: Add tps65219 interrupt driven powerbutton mfd: tps65219: Add driver for TI TPS65219 PMIC mfd: bd957x: Fix Kconfig dependency on REGMAP_IRQ mfd: wcd934x: Convert irq chip to config regs mfd: tps65090: Replace irqchip mask_invert with unmask_base mfd: sun4i-gpadc: Replace irqchip mask_invert with unmask_base mfd: stpmic1: Fix swapped mask/unmask in irq chip mfd: sprd-sc27xx-spi: Replace irqchip mask_invert with unmask_base ...
2022-12-07mfd: Remove dm355evm_msp driverArnd Bergmann
The DaVinci DM355EVM platform is gone after the removal of all unused board files, so the MTD device along with its sub-devices can be removed as well. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20221019152947.3857217-7-arnd@kernel.org
2022-11-15rtc: remove davinci rtc driverArnd Bergmann
The Davinci dm365 SoC support was removed, so the rtc driver has no remaining users. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Acked-by: Marc Zyngier <maz@kernel.org> Acked-by: Kevin Hilman <khilman@baylibre.com> Link: https://lore.kernel.org/r/20221019152947.3857217-9-arnd@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2022-07-26rtc: Add NCT3018Y real time clock driverMia Lin
Add real time clock support for NCT3018Y. Signed-off-by: Mia Lin <mimi05633@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220713090647.8028-4-mimi05633@gmail.com
2022-07-26rtc: vr41xx: remove driverThomas Bogendoerfer
Commit d3164e2f3b0a ("MIPS: Remove VR41xx support") removed support for MIPS VR41xx platform, so remove exclusive drivers for this platform, too. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220715135330.134684-1-tsbogend@alpha.franken.de
2022-06-24rtc: Introduce ti-k3-rtcNishanth Menon
Introduce support for Texas Instruments Real Time Clock controller on newer K3 family of SoCs such as AM62x. The hardware module that is being supported is the "digital only" version which doesn't have capability of external wakeup sources and external power backup. However, for many practical applications, this should suffice as RTC is operational across low power sequences. The hardware block by itself is split into two distinct domains internally to further reduce the power consumption with the actual counter block and comparators clocked off a 32k clock source (which based on SoC integration can be sourced by an external crystal) and an register interface block which is driven by the bus clock. While optimal from power perspective, it does create some complicated synchronizations and sequences that one must be wary of in the driver handling. Acked-by: Andrew Davis <afd@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Georgi Vlaev <g-vlaev@ti.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220623170808.20998-3-nm@ti.com
2022-06-24rtc: Add driver for Microchip PolarFire SoCConor Dooley
Add support for the built-in RTC on Microchip PolarFire SoC Co-Developed-by: Daire McNamara <daire.mcnamara@microchip.com> Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220601123320.2861043-2-conor.dooley@microchip.com
2022-05-17rtc: rzn1: Add new RTC driverMichel Pollet
Add a basic RTC driver for the RZ/N1. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Co-developed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220516082504.33913-3-miquel.raynal@bootlin.com
2022-03-25rtc: optee: add RTC driver for OP-TEE RTC PTAClément Léger
This drivers allows to communicate with a RTC PTA handled by OP-TEE [1]. This PTA allows to query RTC information, set/get time and set/get offset depending on the supported features. [1] https://github.com/OP-TEE/optee_os/pull/5179 Signed-off-by: Clément Léger <clement.leger@bootlin.com> Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220308133505.471601-1-clement.leger@bootlin.com
2022-01-05rtc: Add driver for RTC in Sunplus SP7021Vincent Shih
Add driver for RTC in Sunplus SP7021 Signed-off-by: Vincent Shih <vincent.sunplus@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1638517579-10316-2-git-send-email-vincent.sunplus@gamil.com
2021-12-16rtc: gamecube: Add a RTC driver for the GameCube, Wii and Wii UEmmanuel Gil Peyrot
These three consoles share a device, the MX23L4005, which contains a clock and 64 bytes of SRAM storage, and is exposed on the EXI bus (similar to SPI) on channel 0, device 1. This driver allows it to be used as a Linux RTC device, where time can be read and set. The hardware also exposes two timers, one which shuts down the console and one which powers it on, but these aren’t supported currently. On the Wii U, the counter bias is stored in a XML file, /config/rtc.xml, encrypted in the SLC (eMMC storage), using a proprietary filesystem. In order to avoid having to implement all that, this driver assumes a bootloader will parse this XML file and write the bias into the SRAM, at the same location the other two consoles have it. Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20211215175501.6761-2-linkmauve@linkmauve.fr
2021-10-23rtc: tps80031: Remove driverDmitry Osipenko
Driver was upstreamed in 2013 and never got a user, remove it. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20211021192258.21968-2-digetx@gmail.com
2021-09-26rtc: Add support for the MSTAR MSC313 RTCDaniel Palmer
This adds support for the RTC block on the Mstar MSC313e SoCs and newer. Signed-off-by: Daniel Palmer <daniel@0x0f.com> Co-developed-by: Romain Perier <romain.perier@gmail.com> Signed-off-by: Romain Perier <romain.perier@gmail.com> Reviewed-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210823171613.18941-3-romain.perier@gmail.com
2021-08-10rtc: move RTC_LIB_KUNIT_TEST to proper locationAlexandre Belloni
Move RTC_LIB_KUNIT_TEST under RTC_LIB so it is clear in the menu this is part of the RTC subsystem. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210810212008.631359-2-alexandre.belloni@bootlin.com
2021-08-10rtc: Improve performance of rtc_time64_to_tm(). Add tests.Cassio Neri
The current implementation of rtc_time64_to_tm() contains unnecessary loops, branches and look-up tables. The new one uses an arithmetic-based algorithm appeared in [1] and is approximately 4.3 times faster (YMMV). The drawback is that the new code isn't intuitive and contains many 'magic numbers' (not unusual for this type of algorithm). However, [1] justifies all those numbers and, given this function's history, the code is unlikely to need much maintenance, if any at all. Add a KUnit test case that checks every day in a 160,000 years interval starting on 1970-01-01 against the expected result. Add a new config RTC_LIB_KUNIT_TEST symbol to give the option to run this test suite. [1] Neri, Schneider, "Euclidean Affine Functions and Applications to Calendar Algorithms". https://arxiv.org/abs/2102.06959 Signed-off-by: Cassio Neri <cassio.neri@gmail.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210624201343.85441-1-cassio.neri@gmail.com
2021-03-10rtc: New driver for RTC in Netronix embedded controllerJonathan Neuschäfer
With this driver, mainline Linux can keep its time and date in sync with the vendor kernel. Advanced functionality like alarm and automatic power-on is not yet supported. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2021-02-22Merge tag 'rtc-5.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "Many cleanups and a few drivers removal this cycle. Subsystem: - Introduce features bitfield and the first feature: RTC_FEATURE_ALARM Removed drivers: - ab3100 - coh901331 - tx4939 - sirfsoc Drivers: - use rtc_lock and rtc_unlock instead of opencoding - constify all struct rtc_class_ops - quiet maybe-unused variable warning - replace spin_lock_irqsave with spin_lock in hard IRQ - pcf2127: disable Power-On Reset Override and run OTP refresh" * tag 'rtc-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (81 commits) rtc: abx80x: Add utility function for writing configuration key rtc: pcf2127: properly set flag WD_CD for rtc chips(pcf2129, pca2129) rtc: pcf8563: Add NXP PCA8565 compatible rtc: s3c: quiet maybe-unused variable warning rtc: s3c: stop setting bogus time rtc: sd3078: quiet maybe-unused variable warning rtc: s35390a: quiet maybe-unused variable warning rtc: rx8581: quiet maybe-unused variable warning rtc: rx8010: quiet maybe-unused variable warning rtc: rv8803: quiet maybe-unused variable warning rtc: rv3032: quiet maybe-unused variable warning rtc: rv3029: quiet maybe-unused variable warning rtc: rv3028: quiet maybe-unused variable warning rtc: rs5c372: quiet maybe-unused variable warning rtc: pcf85363: quiet maybe-unused variable warning rtc: pcf85063: quiet maybe-unused variable warnings rtc: meson: quiet maybe-unused variable warning rtc: m41t80: quiet maybe-unused variable warning rtc: isl1208: quiet maybe-unused variable warning rtc: ds3232: quiet maybe-unused variable warning ...
2021-01-25rtc: mrst: Remove driver for deprecated platformAndy Shevchenko
Intel Moorestown and Medfield are quite old Intel Atom based 32-bit platforms, which were in limited use in some Android phones, tablets and consumer electronics more than eight years ago. There are no bugs or problems ever reported outside from Intel for breaking any of that platforms for years. It seems no real users exists who run more or less fresh kernel on it. The commit 05f4434bc130 ("ASoC: Intel: remove mfld_machine") also in align with this theory. Due to above and to reduce a burden of supporting outdated drivers we remove the support of outdated platforms completely. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-01-23rtc: remove ste ab3100 driverArnd Bergmann
The ST-Ericsson U300 platform is getting removed, so this driver is no longer needed. Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210120154158.1860736-4-arnd@kernel.org
2021-01-23rtc: remove ste coh901 driverArnd Bergmann
The ST-Ericsson U300 platform is getting removed, so this driver is no longer needed. Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210120154158.1860736-3-arnd@kernel.org
2021-01-23rtc: remove sirfsoc driverArnd Bergmann
The CSR SiRF prima2/atlas platforms are getting removed, so this driver is no longer needed. Cc: Barry Song <baohua@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Barry Song <baohua@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210120154158.1860736-2-arnd@kernel.org
2021-01-13rtc: tx4939: Remove driverThomas Bogendoerfer
CPU support for TX49xx is getting removed, so remove rtc driver for it. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20210105140305.141401-9-tsbogend@alpha.franken.de
2020-12-11ntp, rtc: Move rtc_set_ntp_time() to ntp codeThomas Gleixner
rtc_set_ntp_time() is not really RTC functionality as the code is just a user of RTC. Move it into the NTP code which allows further cleanups. Requested-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20201206220542.166871172@linutronix.de
generated by cgit v1.2.3 (git 2.0.4) at 2025-12-26 11:30:16 +0000