kernel/drivers/regulator/pf9453-regulator.c, branch linux-rolling-stable

regulator: pf9453: Respect IRQ trigger settings from firmware

2026-03-19T15:15:20Z

commit 2d85ecd6fb0eb2fee0ffa040ec1ddea57b09bc38 upstream. The datasheet specifies, that the IRQ_B pin is pulled low when any unmasked interrupt bit status is changed, and it is released high once the application processor reads the INT1 register. As it specifies a level-low behavior, it should not force a falling-edge interrupt. Remove the IRQF_TRIGGER_FALLING to not force the falling-edge interrupt and instead rely on the flag from the device tree. Fixes: 0959b6706325 ("regulator: pf9453: add PMIC PF9453 support") Cc: stable@vger.kernel.org Signed-off-by: Franz Schnyder Link: https://patch.msgid.link/20260218102518.238943-2-fra.schnyder@gmail.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

regulator: Use container_of_const() when all types are

2025-11-26T21:21:57Z

Merge series from Krzysztof Kozlowski : Use container_of_const(), which is preferred over container_of(), when the argument 'ptr' and returned pointer are already const, for better code safety and readability. Some drivers already have const everywhere, so container_of_const can be directly used. In few other drivers, the final pointer can be constified that way.

regulator: pf9453: Constify pointers to 'regulator_desc' wrap struct

2025-11-26T18:44:32Z

Pointer to 'struct regulator_desc' is a pointer to const and the wrapping structure (container) is not being modified, thus entire syntax can be replaced to preferred and safer container_of_const(). Signed-off-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20251126-container-of-const-regulator-v1-8-eeec378144d4@oss.qualcomm.com Signed-off-by: Mark Brown

regulator: pf9453: Fix kernel doc for mux_poll()

2025-11-06T13:08:13Z

The validator is not happy: Warning: drivers/regulator/pf9453-regulator.c:303 This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Update the kernel-doc accordingly. Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20251106114628.2302762-1-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown

regulator: pf9453: remove unused I2C_LT register

2025-11-03T13:15:31Z

Remove unused I2C_LT registers, which not defined in PF9453 datasheet. Signed-off-by: Joy Zou Link: https://patch.msgid.link/20251103-b4-next-pf9453-v1-3-a025d536eee1@nxp.com Signed-off-by: Mark Brown

regulator: pf9453: remove low power mode

2025-11-03T13:15:31Z

Remove low power mode support to align with the Rev.1.0 -- 25 June 2025 datasheet, which no longer support this feature. Datasheet is available at https://www.nxp.com/docs/en/data-sheet/PF9453.pdf. Signed-off-by: Joy Zou Link: https://patch.msgid.link/20251103-b4-next-pf9453-v1-2-a025d536eee1@nxp.com Signed-off-by: Mark Brown

regulator: pf9453: change the device ID register address

2025-11-03T13:15:30Z

Remove unnecessary register OTP_Ver and change the device ID address to 0x1. Previous version chip is never mass production. So not broken compatibility. Signed-off-by: Joy Zou Link: https://patch.msgid.link/20251103-b4-next-pf9453-v1-1-a025d536eee1@nxp.com Signed-off-by: Mark Brown

regulator: pf9453: convert to use maple tree register cache

2025-04-24T11:56:29Z

The maple tree register cache is based on a much more modern data structure than the rbtree cache and makes optimisation choices which are probably more appropriate for modern systems than those made by the rbtree cache. Signed-off-by: Bo Liu Link: https://patch.msgid.link/20250424010855.2662-1-liubo03@inspur.com Signed-off-by: Mark Brown

regulator: pf9453: Improve documentation for pf9453_regulator_set_ramp_delay_regmap

2025-04-07T11:57:44Z

The function pf9453_regulator_set_ramp_delay_regmap lacked detailed parameter descriptions and return value explanations in its documentation. This patch improves the documentation by adding specific details about the parameters, their usage, and the return values, enhancing clarity for developers. Reported-by: Abaci Robot Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=20168 Signed-off-by: Yang Li Link: https://patch.msgid.link/20250407064532.22680-1-yang.lee@linux.alibaba.com Signed-off-by: Mark Brown

regulator: pf9453: add PMIC PF9453 support

2025-03-16T23:34:01Z

Support new PMIC PF9453, which is totally difference with PCA9450. So create new file for it. The PF9453 is a single chip Power Management IC (PMIC) specifically designed for i.MX 91 processor. It provides power supply solutions for IoT (Internet of Things), smart appliance, and portable applications where size and efficiency are critical. The device provides four high efficiency step-down regulators, three LDOs, one 400 mA load switch and 32.768 kHz crystal oscillator driver. Signed-off-by: Joy Zou Signed-off-by: Frank Li Link: https://patch.msgid.link/20250314-pf9453-v5-2-ab0cf1f871b0@nxp.com Signed-off-by: Mark Brown