linux/drivers/clocksource, branch v6.16

clocksource: hyper-v: Fix warnings for missing export.h header inclusion

2025-07-09T23:46:06Z

Fix below warning in Hyper-V clocksource driver that comes when kernel is compiled with W=1 option. Include export.h in driver files to fix it. * warning: EXPORT_SYMBOL() is used, but #include is missing Signed-off-by: Naman Jain Reviewed-by: Saurabh Sengar Link: https://lore.kernel.org/r/20250611100459.92900-5-namjain@linux.microsoft.com Signed-off-by: Wei Liu Message-ID: <20250611100459.92900-5-namjain@linux.microsoft.com>

Merge tag 'mfd-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

2025-06-03T18:53:55Z

Pull MFD updates from Lee Jones: "Samsung Exynos ACPM: - Populate child platform devices from device tree data - Introduce a new API, 'devm_acpm_get_by_node()', for child devices to get the ACPM handle ROHM PMICs: - Add support for the ROHM BD96802 scalable companion PMIC to the BD96801 core driver - Add support for controlling the BD96802 using the BD96801 regulator driver - Add support to the BD96805, which is almost identical to the BD96801 - Add support to the BD96806, which is similar to the BD96802 Maxim MAX77759: - Add a core driver for the MAX77759 companion PMIC - Add a GPIO driver for the expander functions on the MAX77759 - Add an NVMEM driver to expose the non-volatile memory on the MAX77759 STMicroelectronics STM32MP25: - Add support for the STM32MP25 SoC to the stm32-lptimer - Add support for the STM32MP25 to the clocksource driver, handling new register access requirements - Add support for the STM32MP25 to the PWM driver, enabling up to two PWM outputs Broadcom BCM590xx: - Add support for the BCM59054 PMU - Parse the PMU ID and revision to support behavioral differences between chip revisions - Add regulator support for the BCM59054 Samsung S2MPG10: - Add support for the S2MPG10 PMIC, which communicates via the Samsung ACPM firmware instead of I2C Exynos ACPM: - Improve timeout detection reliability by using ktime APIs instead of a loop counter assumption - Allow PMIC access during late system shutdown by switching to 'udelay()' instead of a sleeping function - Fix an issue where reading command results longer than 8 bytes would fail - Silence non-error '-EPROBE_DEFER' messages during boot to clean up logs Exynos LPASS: - Fix an error handling path by switching to 'devm_regmap_init_mmio()' to prevent resource leaks - Fix a bug where 'exynos_lpass_disable()' was called twice in the remove function - Fix another resource leak in the probe's error path by using 'devm_add_action_or_reset()' Samsung SEC: - Handle the s2dos05, which does not have IRQ support, explicitly to prevent warnings - Fix the core driver to correctly handle errors from 'sec_irq_init()' instead of ignoring them STMPE-SPI: - Correct an undeclared identifier in the 'MODULE_DEVICE_TABLE' macro MAINTAINERS: - Adjust a file path for the Siemens IPC LED drivers entry to fix a broken reference Maxim Drivers: - Correct the spelling of "Electronics" in Samsung copyright headers across multiple files General: - Fix wakeup source memory leaks on device unbind for 88pm886, as3722, max14577, max77541, max77705, max8925, rt5033, and sprd-sc27xx drivers Samsung SEC Drivers: - Split the driver into a transport-agnostic core ('sec-core') and transport-specific ('sec-i2c', 'sec-acpm') modules to support non-I2C devices - Merge the 'sec-core' and 'sec-irq' modules to reduce memory consumption - Move internal APIs to a private header to clean up the public API - Improve code style by sorting includes, cleaning up headers, sorting device tables, and using helper macros like 'dev_err_probe()', 'MFD_CELL', and 'REGMAP_IRQ_REG' - Make regmap configuration for s2dos05/s2mpu05 explicit to improve clarity - Rework platform data and regmap instantiation to use OF match data instead of a large switch statement ROHM BD96801/2: - Prepare the driver for new models by separating chip-specific data into its own structure - Drop IC name prefix from IRQ resource names in both the MFD and regulator drivers for simplification Broadcom BCM590xx: - Refactor the regulator driver to store descriptions in a table to ease support for new chips - Rename BCM59056-specific data to prepare for the addition of other regulators - Use 'dev_err_probe()' for cleaner error handling Exynos ACPM: - Correct kerneldoc warnings and use the conventional 'np' argument name General MFD: - Convert 'aat2870' and 'tps65010' to use the per-client debugfs directory provided by the I2C core - Convert 'sm501', 'tps65010' and 'ucb1x00' to use the new GPIO line value setter callbacks - Constify 'regmap_irq_chip' and other structures in '88pm886' to move data to read-only sections BCM590xx: - Drop the unused "id" member from the 'bcm590xx' struct in preparation for a replacement Samsung SEC Core: - Remove forward declarations for functions that no longer exist SM501: - Remove the unused 'sm501_find_clock()' function New Compatibles: - Google: Add a PMIC child node to the 'google,gs101-acpm-ipc' binding - ROHM: Add new bindings for 'rohm,bd96802-regulator' and 'rohm,bd96802-pmic', and add compatibles for BD96805 and BD96806 - Maxim: Add new bindings for 'maxim,max77759-gpio', 'maxim,max77759-nvmem', and the top-level 'maxim,max77759' - STM: Add 'stm32mp25' compatible to the 'stm32-lptimer' binding - Broadcom: Add 'bcm59054' compatible - Atmel/Microchip: Add 'microchip,sama7d65-gpbr' and 'microchip,sama7d65-secumod' compatibles - Samsung: Add 's2mpg10' compatible to the 'samsung,s2mps11' MFD binding - MediaTek: Add compatibles for 'mt6893' (scpsys), 'mt7988-topmisc', and 'mt8365-infracfg-nao' - Qualcomm: Add 'qcom,apq8064-mmss-sfpb' and 'qcom,apq8064-sps-sic' syscon compatibles Refactoring & Cleanup: - Convert Broadcom BCM59056 devicetree bindings to YAML and split them into MFD and regulator parts - Convert the Microchip AT91 secumod binding to YAML - Drop unrelated consumer nodes from binding examples to reduce bloat - Correct indentation and style in various DTS examples" * tag 'mfd-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (81 commits) mfd: maxim: Correct Samsung "Electronics" spelling in copyright headers mfd: maxim: Correct Samsung "Electronics" spelling in headers mfd: sm501: Remove unused sm501_find_clock mfd: 88pm886: Constify struct regmap_irq_chip and some other structures dt-bindings: mfd: syscon: Add mediatek,mt8365-infracfg-nao mfd: sprd-sc27xx: Fix wakeup source leaks on device unbind mfd: rt5033: Fix wakeup source leaks on device unbind mfd: max8925: Fix wakeup source leaks on device unbind mfd: max77705: Fix wakeup source leaks on device unbind mfd: max77541: Fix wakeup source leaks on device unbind mfd: max14577: Fix wakeup source leaks on device unbind mfd: as3722: Fix wakeup source leaks on device unbind mfd: 88pm886: Fix wakeup source leaks on device unbind dt-bindings: mfd: Correct indentation and style in DTS example dt-bindings: mfd: Drop unrelated nodes from DTS example dt-bindings: mfd: syscon: Add qcom,apq8064-sps-sic dt-bindings: mfd: syscon: Add qcom,apq8064-mmss-sfpb mfd: stmpe-spi: Correct the name used in MODULE_DEVICE_TABLE dt-bindings: mfd: syscon: Add mt7988-topmisc mfd: exynos-lpass: Fix another error handling path in exynos_lpass_probe() ...

Merge tag 'timers-clocksource-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-05-27T16:01:26Z

Pull clocksource updates from Thomas Gleixner: "Updates for clocksource/clockevent drivers: - The final conversion of text formatted device tree binding to schemas - A new driver fot the System Timer Module on S32G NXP SoCs - A new driver fot the Econet HPT timer - The usual improvements and device tree binding updates" * tag 'timers-clocksource-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits) clocksource/drivers/renesas-ostm: Unconditionally enable reprobe support dt-bindings: timer: renesas,ostm: Document RZ/V2N (R9A09G056) support dt-bindings: timer: Convert marvell,armada-370-timer to DT schema dt-bindings: timer: Convert ti,keystone-timer to DT schema dt-bindings: timer: Convert st,spear-timer to DT schema dt-bindings: timer: Convert socionext,milbeaut-timer to DT schema dt-bindings: timer: Convert snps,arc-timer to DT schema dt-bindings: timer: Convert snps,archs-rtc to DT schema dt-bindings: timer: Convert snps,archs-gfrc to DT schema dt-bindings: timer: Convert lsi,zevio-timer to DT schema dt-bindings: timer: Convert jcore,pit to DT schema dt-bindings: timer: Convert img,pistachio-gptimer to DT schema dt-bindings: timer: Convert ezchip,nps400-timer to DT schema dt-bindings: timer: Convert cirrus,clps711x-timer to DT schema dt-bindings: timer: Convert altr,timer-1.0 to DT schema dt-bindings: timer: Add ESWIN EIC7700 CLINT clocksource/drivers: Add EcoNet Timer HPT driver dt-bindings: timer: Add EcoNet EN751221 "HPT" CPU Timer dt-bindings: timer: Convert arm,mps2-timer to DT schema dt-bindings: timer: Add Sophgo SG2044 ACLINT timer ...

clocksource/drivers/renesas-ostm: Unconditionally enable reprobe support

2025-05-16T11:33:11Z

Previously, the OSTM driver's platform probe path was only enabled for selected SoCs (e.g., RZ/G2L and RZ/V2H) due to issues on RZ/Ax (ARM32) SoCs, which encountered IRQ conflicts like: /soc/timer@e803b000: used for clock events genirq: Flags mismatch irq 16. 00215201 (timer@e803c000) vs. 00215201 (timer@e803c000) Failed to request irq 16 for /soc/timer@e803c000 renesas_ostm e803c000.timer: probe with driver renesas_ostm failed with error -16 These issues have since been resolved by commit 37385c0772a4 ("clocksource/drivers/renesas-ostm: Avoid reprobe after successful early probe"), which prevents reprobe on successfully initialized early timers. With this fix in place, there is no longer a need to restrict platform probing based on SoC-specific configs. This change unconditionally enables reprobe support for all SoCs, simplifying the logic and avoiding the need to update the configuration for every new Renesas SoC with OSTM. Additionally, the `ostm_of_table` is now marked with `__maybe_unused` to fix a build warning when `CONFIG_OF` is disabled. RZ/A1 and RZ/A2 remain unaffected with this change. Signed-off-by: Lad Prabhakar Reviewed-by: Geert Uytterhoeven Tested-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20250515182207.329176-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Daniel Lezcano

clocksource/drivers: Add EcoNet Timer HPT driver

2025-05-16T09:10:33Z

Introduce a clocksource driver for the so-called high-precision timer (HPT) in the EcoNet EN751221 and EN751627 MIPS SoCs. It's a 32 bit upward-counting one-shot timer which relies on the crystal so it is unaffected by CPU power mode. On MIPS 34K devices (single core) there is one timer, and on 1004K devices (dual core) there are two. Each timer has two sets of count/compare registers so that there is one for each of the VPEs on the core. Because each core has 2 VPEs, register selection takes the CPU number / 2 for the timer corrisponding to the core, then CPU number % 2 for the register corrisponding to the VPE. These timers use a percpu-devid IRQ to route interrupts to the VPE which set the event. Signed-off-by: Caleb James DeLisle Link: https://lore.kernel.org/r/20250507134500.390547-3-cjd@cjdns.fr Signed-off-by: Daniel Lezcano

clocksource/drivers/timer-tegra186: Remove unused bits

2025-05-16T09:10:33Z

The intention to keep the unsed if(0) block is gone now. Remove them for clean codes. Signed-off-by: robelin Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20250507044311.3751033-4-robelin@nvidia.com Signed-off-by: Daniel Lezcano

clocksource/drivers/timer-tegra186: Fix watchdog self-pinging

2025-05-16T09:10:32Z

This change removes watchdog self-pinging behavior. The timer irq handler is triggered due to the 1st expiration, the handler disables and enables watchdog but also implicitly clears the expiration count so the count can only be 0 or 1. Since this watchdog supports opened, configured, or pinged by systemd, We remove this behavior or the watchdog may not bark when systemd crashes since the 5th expiration never comes. Signed-off-by: Pohsun Su Signed-off-by: Robert Lin Link: https://lore.kernel.org/r/20250507044311.3751033-3-robelin@nvidia.com Signed-off-by: Daniel Lezcano

clocksource/drivers/timer-tegra186: Add WDIOC_GETTIMELEFT support

2025-05-16T09:10:32Z

This change adds support for WDIOC_GETTIMELEFT so userspace programs can get the number of seconds before system reset by the watchdog timer via ioctl. Signed-off-by: Pohsun Su Signed-off-by: Robert Lin Link: https://lore.kernel.org/r/20250507044311.3751033-2-robelin@nvidia.com Signed-off-by: Daniel Lezcano

clocksource/drivers/atmel_tcb: Fix kconfig dependency

2025-05-16T09:10:32Z

Build-testing this driver on arm without CONFIG_OF produces a warning: drivers/clocksource/timer-atmel-tcb.c:368:34: error: 'atmel_tcb_of_match' defined but not used [-Werror=unused-const-variable=] 368 | static const struct of_device_id atmel_tcb_of_match[] = { | ^~~~~~~~~~~~~~~~~~ Change the dependency to require CONFIG_OF for build testing to avoid the warning. Testing remains possible on all architectures as CONFIG_OF is user-selectable. Cc: Nicolas Ferre Cc: Claudiu Beznea Reviewed-by: Alexandre Belloni Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20250409155313.1096915-1-arnd@kernel.org Signed-off-by: Daniel Lezcano

clocksource/drivers/nxp-timer: Add the System Timer Module for the s32gx platforms

2025-05-16T09:10:32Z

STM supports commonly required system and application software timing functions. STM includes a 32-bit count-up timer and four 32-bit compare channels with a separate interrupt source for each channel. The timer is driven by the STM module clock divided by an 8-bit prescale value (1 to 256). STM has the following features: • One 32-bit count-up timer with an 8-bit prescaler • Four 32-bit compare channels • An independent interrupt source for each channel • Ability to stop the timer in Debug mode The s32g platform is declined into two versions, the s32g2 and the s32g3. The former has a STM block with 8 timers and the latter has 12 timers. The platform is designed to have one usable STM instance per core on the system which is composed of 3 x Cortex-M3 + 4 Cortex-A53 for the s32g2 and 3 x Cortex-M3 + 8 Cortex-A53 for the s32g3. There is a special STM instance called STM_TS which is dedicated to the timestamp. The 7th STM instance STM_07 is directly tied to the STM_TS which means it is not usable as a clockevent. The driver instantiate each STM described in the device tree as a clocksource and a clockevent conforming to the reference manual even if the Linux system does not use all of the clocksource. Each clockevent will have a cpumask set for a specific CPU. Given the counter is shared between the clocksource and the clockevent, the STM module can not be disabled by one or another so the refcounting mechanism is used to stop the counter when it reaches zero and to start it when it is one. The suspend and resume relies on the refcount to stop the module. As the device tree will have multiple STM entries, the driver can be probed in parallel with the async option but it is not enabled yet. However, the driver code takes care of preventing a race by putting a lock to protect the number of STM instances global variable which means it is ready to support the option when enough testing will be done with the underlying time framework. Cc: Ghennadi Procopciuc Cc: Krzysztof Kozlowski Cc: Thomas Fossati Suggested-by: Ghennadi Procopciuc Link: https://lore.kernel.org/r/20250417151623.121109-3-daniel.lezcano@linaro.org Signed-off-by: Daniel Lezcano