lwn.git/drivers/regulator, branch master

Merge tag 'regulator-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

2026-04-15T21:32:12+00:00

Pull regulator updates from Mark Brown: "This has been a very quiet update for the regulator API, the bulk of the diffstat is DT binding conversions and the most promient series in the changelog is Johan Hovold cleaning up some leaks of OF nodes. For some reason we have had several different people sending improvements to better describe the parent supplies for existing regulators, these look to be independent efforts. The only new hardware support is for some Motorola custom varints of cpcap" * tag 'regulator-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (35 commits) regulator: max77620: drop redundant OF node initialisation regulator: bq257xx: Make OTG enable GPIO really optional regulator: bq257xx: Remove reference to the parent MFD's dev regulator: bd9571mwv: fix OF node reference imbalance regulator: act8945a: fix OF node reference imbalance regulator: s2dos05: fix OF node reference imbalance regulator: mt6357: fix OF node reference imbalance regulator: max77650: fix OF node reference imbalance regulator: rk808: fix OF node reference imbalance regulator: bq257xx: fix OF node reference imbalance regulator: dt-bindings: qcom,qca6390-pmu: Document WCN6755 PMU regulator: dt-bindings: regulator-max77620: convert to DT schema regulator: mt6315: Add regulator supplies regulator: dt-bindings: mt6315: Add regulator supplies regulator: devres: Use enum regulator_get_type in internal functions regulator: dt-bindings: mps,mp8859: convert to DT schema regulator: da9121: Allow caching BUCK registers regulator: dt-bindings: dlg,da9121: Add dlg,no-gpio-control regulator: cros-ec: Add regulator supply regulator: dt-bindings: cros-ec: Add regulator supply ...

Merge tag 'gpio-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

2026-04-14T03:10:58+00:00

Pull gpio updates from Bartosz Golaszewski: "For this merge window we have two new drivers: support for GPIO-signalled ACPI events on Intel platforms and a generic GPIO-over-pinctrl driver using the ARM SCMI protocol for controlling pins. Several things have been reworked in GPIO core: we unduplicated GPIO hog handling, reduced the number of SRCU locks and dereferences, improved support for software-node-based lookup and removed more legacy code after converting remaining users to modern alternatives. There's also a number of driver reworks and refactoring, documentation updates, some bug-fixes and new tests. GPIO core: - defer probe on software node lookups when the remote software node exists but has not been registered as a firmware node yet - unify GPIO hog handling by moving code duplicated in OF and ACPI modules into GPIO core and allow setting up hogs with software nodes - allow matching GPIO controllers by secondary firmware node if matching by primary does not succeed - demote deferral warnings to debug level as they are quite normal when using software nodes which don't support fw_devlink yet - disable the legacy GPIO character device uAPI v1 supprt in Kconfig by default - rework several core functions in preparation for the upcoming Revocable helper library for protecting resources against sudden removal, this reduces the number of SRCU dereferences in GPIO core - simplify file descriptor logic in GPIO character device code by using FD_PREPARE() - introduce a header defining symbols used by both GPIO consumers and providers to avoid having to include provider-specific headers from drivers which only consume GPIOs - replace snprintf() with strscpy() where formatting is not required New drivers: - add the gpio-by-pinctrl generic driver using the ARM SCMI protocol to control GPIOs (along with SCMI changes pulled from the pinctrl tree) - add a driver providing support for handling of platform events via GPIO-signalled ACPI events (used on Intel Nova Lake and later platforms) Driver changes: - extend the gpio-kempld driver with support for more recent models, interrupts and setting/getting multiple values at once - improve interrupt handling in gpio-brcmstb - add support for multi-SoC systems in gpio-tegra186 - make sure we return correct values from the .get() callbacks in several GPIO drivers by normalizing any values other than 0, 1 or negative error numbers - use flexible arrays in several drivers to reduce the number of required memory allocations - simplify synchronous waiting for virtual drivers to probe and remove the dedicated, a bit overengineered helper library dev-sync-probe - remove unneeded Kconfig dependencies on OF_GPIO in several drivers and subsystems - convert the two remaining users of of_get_named_gpio() to using GPIO descriptors and remove the (no longer used) function along with the header that declares it - add missing includes in gpio-mmio - shrink and simplify code in gpio-max732x by using guard(mutex) - remove duplicated code handling the 'ngpios' property from gpio-ts4800, it's already handled in GPIO core - use correct variable type in gpio-aspeed - add support for a new model in gpio-realtek-otto - allow to specify the active-low setting of simulated hogs over the configfs interface (in addition to existing devicetree support) in gpio-sim Bug fixes: - clear the OF_POPULATED flag on hog nodes in GPIO chip remove path on OF systems - fix resource leaks in error path in gpiochip_add_data_with_key() - drop redundant device reference in gpio-mpsse Tests: - add selftests for use-after-free cases in GPIO character device code DT bindings: - add a DT binding document for SCMI based, gpio-over-pinctrl devices - fix interrupt description in microchip,mpfs-gpio - add new compatible for gpio-realtek-otto - describe the resets of the mpfs-gpio controller - fix maintainer's email in gpio-delay bindings - remove the binding document for cavium,thunder-8890 as the corresponding device is bound over PCI and not firmware nodes Documentation: - update the recommended way of converting legacy boards to using software nodes for GPIO description - describe GPIO line value semantics - misc updates to kerneldocs Misc: - convert OMAP1 ams-delta board to using GPIO hogs described with software nodes" * tag 'gpio-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits) gpio: swnode: defer probe on references to unregistered software nodes dt-bindings: gpio: cavium,thunder-8890: Remove DT binding Documentation: gpio: update the preferred method for using software node lookup gpio: gpio-by-pinctrl: s/used to do/is used to do/ gpio: aspeed: fix unsigned long int declaration gpio: rockchip: convert to dynamic GPIO base allocation gpio: remove dev-sync-probe gpio: virtuser: stop using dev-sync-probe gpio: aggregator: stop using dev-sync-probe gpio: sim: stop using dev-sync-probe gpio: Add Intel Nova Lake ACPI GPIO events driver gpiolib: Make deferral warnings debug messages gpiolib: fix hogs with multiple lines gpio: fix up CONFIG_OF dependencies gpio: gpio-by-pinctrl: add pinctrl based generic GPIO driver gpio: dt-bindings: Add GPIO on top of generic pin control firmware: arm_scmi: Allow PINCTRL_REQUEST to return EOPNOTSUPP pinctrl: scmi: ignore PIN_CONFIG_PERSIST_STATE pinctrl: scmi: Delete PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS support pinctrl: scmi: Add SCMI_PIN_INPUT_VALUE ...

regulator: max77620: drop redundant OF node initialisation

2026-04-10T12:56:21+00:00

The platform device OF node is set unconditionally since commit 6f55c5dd1118 ("regulator: max77620: Use device_set_of_node_from_dev()") so drop the earlier redundant conditional initialisation. Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260407121405.2663004-1-johan@kernel.org Signed-off-by: Mark Brown

regulator: bq257xx: Make OTG enable GPIO really optional

2026-04-10T10:52:40+00:00

The bindings describe the OTG enable GPIO as optional, but the driver gets upset if it's not provided in the device tree. Make the driver accept the absence of the GPIO, and just use register writes to handle OTG mode in that case, skipping the error message for -ENOENT. Acked-by: Mark Brown Tested-by: Chris Morgan Signed-off-by: Alexey Charkov Link: https://patch.msgid.link/20260331-bq25792-v6-4-0278fba33eb9@flipper.net Signed-off-by: Mark Brown

regulator: bq257xx: Remove reference to the parent MFD's dev

2026-04-10T10:52:40+00:00

Drop the ->bq field from the platform data of the bq257xx regulator driver, which was only used to get the regmap of the parent MFD device, and use the regmap from the regulator_dev instead, slimming down the code a bit. Acked-by: Mark Brown Tested-by: Chris Morgan Signed-off-by: Alexey Charkov Link: https://patch.msgid.link/20260331-bq25792-v6-2-0278fba33eb9@flipper.net Signed-off-by: Mark Brown

regulator: fix OF node imbalance on reuse

2026-04-09T19:19:36+00:00

Johan Hovold says: These drivers reuse the OF node of their parent multi-function device but fail to take another reference to balance the one dropped by the platform bus code when unbinding the MFD and deregistering the child devices. Fix this by using the intended helper for reusing OF nodes. Note that the first two patches will cause a trivial conflict with Doug's series adding accessor functions for struct device flags which has now been merged to the driver-core tree: https://lore.kernel.org/r/20260406232444.3117516-1-dianders@chromium.org Link: https://patch.msgid.link/20260408073055.5183-1-johan@kernel.org

regulator: bd9571mwv: fix OF node reference imbalance

2026-04-09T19:19:35+00:00

The driver reuses the OF node of the parent multi-function device but fails to take another reference to balance the one dropped by the platform bus code when unbinding the MFD and deregistering the child devices. Fix this by using the intended helper for reusing OF nodes. Fixes: e85c5a153fe2 ("regulator: Add ROHM BD9571MWV-M PMIC regulator driver") Cc: stable@vger.kernel.org # 4.12 Cc: Marek Vasut Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260408073055.5183-8-johan@kernel.org Signed-off-by: Mark Brown

regulator: act8945a: fix OF node reference imbalance

2026-04-09T19:19:34+00:00

The driver reuses the OF node of the parent multi-function device but fails to take another reference to balance the one dropped by the platform bus code when unbinding the MFD and deregistering the child devices. Fix this by using the intended helper for reusing OF nodes. Fixes: 38c09961048b ("regulator: act8945a: add regulator driver for ACT8945A") Cc: stable@vger.kernel.org # 4.6 Cc: Wenyou Yang Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260408073055.5183-7-johan@kernel.org Signed-off-by: Mark Brown

regulator: s2dos05: fix OF node reference imbalance

2026-04-09T19:19:33+00:00

The driver reuses the OF node of the parent multi-function device but fails to take another reference to balance the one dropped by the platform bus code when unbinding the MFD and deregistering the child devices. Fix this by using the intended helper for reusing OF nodes. Fixes: bb2441402392 ("regulator: add s2dos05 regulator support") Cc: stable@vger.kernel.org # 6.18 Cc: Dzmitry Sankouski Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260408073055.5183-6-johan@kernel.org Signed-off-by: Mark Brown

regulator: mt6357: fix OF node reference imbalance

2026-04-09T19:19:32+00:00

The driver reuses the OF node of the parent multi-function device but fails to take another reference to balance the one dropped by the platform bus code when unbinding the MFD and deregistering the child devices. Fix this by using the intended helper for reusing OF nodes. Fixes: dafc7cde23dc ("regulator: add mt6357 regulator") Cc: stable@vger.kernel.org # 6.2 Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260408073055.5183-5-johan@kernel.org Signed-off-by: Mark Brown