644 lines
18 KiB
Plaintext
644 lines
18 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig PWM
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bool "Pulse-Width Modulation (PWM) Support"
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help
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Generic Pulse-Width Modulation (PWM) support.
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In Pulse-Width Modulation, a variation of the width of pulses
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in a rectangular pulse signal is used as a means to alter the
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average power of the signal. Applications include efficient
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power delivery and voltage regulation. In computer systems,
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PWMs are commonly used to control fans or the brightness of
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display backlights.
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This framework provides a generic interface to PWM devices
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within the Linux kernel. On the driver side it provides an API
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to register and unregister a PWM chip, an abstraction of a PWM
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controller, that supports one or more PWM devices. Client
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drivers can request PWM devices and use the generic framework
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to configure as well as enable and disable them.
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This generic framework replaces the legacy PWM framework which
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allows only a single driver implementing the required API. Not
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all legacy implementations have been ported to the framework
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yet. The framework provides an API that is backward compatible
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with the legacy framework so that existing client drivers
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continue to work as expected.
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If unsure, say no.
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if PWM
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config PWM_SYSFS
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bool
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default y if SYSFS
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config PWM_DEBUG
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bool "PWM lowlevel drivers additional checks and debug messages"
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depends on DEBUG_KERNEL
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help
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This option enables some additional checks to help lowlevel driver
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authors to get their callbacks implemented correctly.
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It is expected to introduce some runtime overhead and diagnostic
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output to the kernel log, so only enable while working on a driver.
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config PWM_AB8500
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tristate "AB8500 PWM support"
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depends on AB8500_CORE && ARCH_U8500
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help
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Generic PWM framework driver for Analog Baseband AB8500.
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To compile this driver as a module, choose M here: the module
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will be called pwm-ab8500.
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config PWM_ATMEL
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tristate "Atmel PWM support"
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depends on ARCH_AT91 || COMPILE_TEST
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depends on HAS_IOMEM && OF
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help
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Generic PWM framework driver for Atmel SoC.
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To compile this driver as a module, choose M here: the module
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will be called pwm-atmel.
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config PWM_ATMEL_HLCDC_PWM
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tristate "Atmel HLCDC PWM support"
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depends on MFD_ATMEL_HLCDC
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depends on HAVE_CLK
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help
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Generic PWM framework driver for the PWM output of the HLCDC
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(Atmel High-end LCD Controller). This PWM output is mainly used
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to control the LCD backlight.
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To compile this driver as a module, choose M here: the module
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will be called pwm-atmel-hlcdc.
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config PWM_ATMEL_TCB
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tristate "Atmel TC Block PWM support"
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depends on OF
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select REGMAP_MMIO
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help
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Generic PWM framework driver for Atmel Timer Counter Block.
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A Timer Counter Block provides 6 PWM devices grouped by 2.
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Devices in a given group must have the same period.
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To compile this driver as a module, choose M here: the module
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will be called pwm-atmel-tcb.
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config PWM_BCM_IPROC
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tristate "iProc PWM support"
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depends on ARCH_BCM_IPROC || COMPILE_TEST
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depends on COMMON_CLK && HAS_IOMEM
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default ARCH_BCM_IPROC
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help
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Generic PWM framework driver for Broadcom iProc PWM block. This
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block is used in Broadcom iProc SoC's.
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To compile this driver as a module, choose M here: the module
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will be called pwm-bcm-iproc.
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config PWM_BCM_KONA
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tristate "Kona PWM support"
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depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
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depends on HAVE_CLK && HAS_IOMEM
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default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
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help
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Generic PWM framework driver for Broadcom Kona PWM block.
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To compile this driver as a module, choose M here: the module
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will be called pwm-bcm-kona.
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config PWM_BCM2835
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tristate "BCM2835 PWM support"
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depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
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depends on HAS_IOMEM
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help
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PWM framework driver for BCM2835 controller (Raspberry Pi)
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To compile this driver as a module, choose M here: the module
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will be called pwm-bcm2835.
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config PWM_BERLIN
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tristate "Marvell Berlin PWM support"
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depends on ARCH_BERLIN || COMPILE_TEST
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depends on HAS_IOMEM
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help
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PWM framework driver for Marvell Berlin SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-berlin.
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config PWM_BRCMSTB
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tristate "Broadcom STB PWM support"
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depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for the Broadcom Set-top-Box
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SoCs (BCM7xxx).
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To compile this driver as a module, choose M Here: the module
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will be called pwm-brcmstb.c.
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config PWM_CLPS711X
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tristate "CLPS711X PWM support"
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depends on ARCH_CLPS711X || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for Cirrus Logic CLPS711X.
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To compile this driver as a module, choose M here: the module
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will be called pwm-clps711x.
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config PWM_CRC
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bool "Intel Crystalcove (CRC) PWM support"
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depends on X86 && INTEL_SOC_PMIC
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help
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Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
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control.
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config PWM_CROS_EC
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tristate "ChromeOS EC PWM driver"
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depends on CROS_EC
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help
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PWM driver for exposing a PWM attached to the ChromeOS Embedded
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Controller.
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config PWM_DWC
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tristate "DesignWare PWM Controller"
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depends on PCI
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help
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PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
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To compile this driver as a module, choose M here: the module
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will be called pwm-dwc.
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config PWM_EP93XX
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tristate "Cirrus Logic EP93xx PWM support"
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depends on ARCH_EP93XX || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for Cirrus Logic EP93xx.
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To compile this driver as a module, choose M here: the module
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will be called pwm-ep93xx.
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config PWM_FSL_FTM
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tristate "Freescale FlexTimer Module (FTM) PWM support"
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depends on HAS_IOMEM
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depends on OF
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select REGMAP_MMIO
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help
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Generic FTM PWM framework driver for Freescale VF610 and
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Layerscape LS-1 SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-fsl-ftm.
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config PWM_HIBVT
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tristate "HiSilicon BVT PWM support"
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depends on ARCH_HISI || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for HiSilicon BVT SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-hibvt.
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config PWM_IMG
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tristate "Imagination Technologies PWM driver"
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depends on HAS_IOMEM
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depends on MFD_SYSCON
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depends on COMMON_CLK
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depends on MIPS || COMPILE_TEST
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help
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Generic PWM framework driver for Imagination Technologies
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PWM block which supports 4 channels.
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To compile this driver as a module, choose M here: the module
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will be called pwm-img
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config PWM_IMX1
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tristate "i.MX1 PWM support"
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depends on ARCH_MXC || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for i.MX1 and i.MX21
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To compile this driver as a module, choose M here: the module
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will be called pwm-imx1.
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config PWM_IMX27
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tristate "i.MX27 PWM support"
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depends on ARCH_MXC || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for i.MX27 and later i.MX SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-imx27.
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config PWM_IMX_TPM
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tristate "i.MX TPM PWM support"
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depends on ARCH_MXC || COMPILE_TEST
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depends on HAVE_CLK && HAS_IOMEM
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help
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Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
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name is Low Power Timer/Pulse Width Modulation Module.
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To compile this driver as a module, choose M here: the module
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will be called pwm-imx-tpm.
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config PWM_INTEL_LGM
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tristate "Intel LGM PWM support"
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depends on HAS_IOMEM
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depends on (OF && X86) || COMPILE_TEST
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select REGMAP_MMIO
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help
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Generic PWM fan controller driver for LGM SoC.
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To compile this driver as a module, choose M here: the module
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will be called pwm-intel-lgm.
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config PWM_IQS620A
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tristate "Azoteq IQS620A PWM support"
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depends on MFD_IQS62X || COMPILE_TEST
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help
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Generic PWM framework driver for the Azoteq IQS620A multi-function
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sensor.
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To compile this driver as a module, choose M here: the module will
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be called pwm-iqs620a.
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config PWM_JZ4740
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tristate "Ingenic JZ47xx PWM support"
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depends on MIPS || COMPILE_TEST
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depends on COMMON_CLK
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select MFD_SYSCON
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help
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Generic PWM framework driver for Ingenic JZ47xx based
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machines.
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To compile this driver as a module, choose M here: the module
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will be called pwm-jz4740.
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config PWM_KEEMBAY
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tristate "Intel Keem Bay PWM driver"
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depends on ARCH_KEEMBAY || COMPILE_TEST
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depends on COMMON_CLK && HAS_IOMEM
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help
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The platform driver for Intel Keem Bay PWM controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-keembay.
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config PWM_LP3943
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tristate "TI/National Semiconductor LP3943 PWM support"
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depends on MFD_LP3943
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help
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Generic PWM framework driver for LP3943 which supports two PWM
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channels.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lp3943.
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config PWM_LPC18XX_SCT
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tristate "LPC18xx/43xx PWM/SCT support"
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depends on ARCH_LPC18XX || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for NXP LPC18xx PWM/SCT which
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supports 16 channels.
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A maximum of 15 channels can be requested simultaneously and
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must have the same period.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpc18xx-sct.
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config PWM_LPC32XX
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tristate "LPC32XX PWM support"
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depends on ARCH_LPC32XX || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
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PWM controllers.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpc32xx.
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config PWM_LPSS
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depends on HAS_IOMEM
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tristate
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config PWM_LPSS_PCI
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tristate "Intel LPSS PWM PCI driver"
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depends on X86 || COMPILE_TEST
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depends on HAS_IOMEM && PCI
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select PWM_LPSS
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help
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The PCI driver for Intel Low Power Subsystem PWM controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpss-pci.
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config PWM_LPSS_PLATFORM
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tristate "Intel LPSS PWM platform driver"
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depends on (X86 && ACPI) || COMPILE_TEST
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depends on HAS_IOMEM
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select PWM_LPSS
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help
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The platform driver for Intel Low Power Subsystem PWM controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-lpss-platform.
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config PWM_MESON
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tristate "Amlogic Meson PWM driver"
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depends on ARCH_MESON || COMPILE_TEST
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depends on COMMON_CLK && HAS_IOMEM
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help
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The platform driver for Amlogic Meson PWM controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-meson.
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config PWM_MTK_DISP
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tristate "MediaTek display PWM driver"
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depends on ARCH_MEDIATEK || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for MediaTek disp-pwm device.
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The PWM is used to control the backlight brightness for display.
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To compile this driver as a module, choose M here: the module
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will be called pwm-mtk-disp.
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config PWM_MEDIATEK
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tristate "MediaTek PWM support"
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depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for Mediatek ARM SoC.
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To compile this driver as a module, choose M here: the module
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will be called pwm-mediatek.
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config PWM_MXS
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tristate "Freescale MXS PWM support"
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depends on ARCH_MXS || COMPILE_TEST
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depends on HAS_IOMEM && OF
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select STMP_DEVICE
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help
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Generic PWM framework driver for Freescale MXS.
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To compile this driver as a module, choose M here: the module
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will be called pwm-mxs.
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config PWM_NTXEC
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tristate "Netronix embedded controller PWM support"
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depends on MFD_NTXEC
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help
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Say yes here if you want to support the PWM output of the embedded
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controller found in certain e-book readers designed by the original
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design manufacturer Netronix.
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config PWM_OMAP_DMTIMER
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tristate "OMAP Dual-Mode Timer PWM support"
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depends on OF
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depends on OMAP_DM_TIMER || COMPILE_TEST
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help
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Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
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To compile this driver as a module, choose M here: the module
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will be called pwm-omap-dmtimer
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config PWM_PCA9685
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tristate "NXP PCA9685 PWM driver"
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depends on I2C
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select REGMAP_I2C
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help
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Generic PWM framework driver for NXP PCA9685 LED controller.
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To compile this driver as a module, choose M here: the module
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will be called pwm-pca9685.
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config PWM_PXA
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tristate "PXA PWM support"
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depends on ARCH_PXA || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for PXA.
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To compile this driver as a module, choose M here: the module
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will be called pwm-pxa.
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config PWM_RASPBERRYPI_POE
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tristate "Raspberry Pi Firwmware PoE Hat PWM support"
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# Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
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# happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
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depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
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help
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Enable Raspberry Pi firmware controller PWM bus used to control the
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official RPI PoE hat
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config PWM_RCAR
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tristate "Renesas R-Car PWM support"
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depends on ARCH_RENESAS || COMPILE_TEST
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depends on HAS_IOMEM
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help
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This driver exposes the PWM Timer controller found in Renesas
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R-Car chips through the PWM API.
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To compile this driver as a module, choose M here: the module
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will be called pwm-rcar.
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config PWM_RENESAS_TPU
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tristate "Renesas TPU PWM support"
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depends on ARCH_RENESAS || COMPILE_TEST
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depends on HAS_IOMEM
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help
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This driver exposes the Timer Pulse Unit (TPU) PWM controller found
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in Renesas chips through the PWM API.
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To compile this driver as a module, choose M here: the module
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will be called pwm-renesas-tpu.
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config PWM_ROCKCHIP
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tristate "Rockchip PWM support"
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depends on ARCH_ROCKCHIP || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for the PWM controller found on
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Rockchip SoCs.
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config PWM_SAMSUNG
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tristate "Samsung PWM support"
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depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
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and Exynos SoCs.
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Choose Y here only if you build for such Samsung SoC.
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To compile this driver as a module, choose M here: the module
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will be called pwm-samsung.
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config PWM_SIFIVE
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tristate "SiFive PWM support"
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depends on OF
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depends on COMMON_CLK && HAS_IOMEM
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depends on RISCV || COMPILE_TEST
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help
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Generic PWM framework driver for SiFive SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-sifive.
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config PWM_SL28CPLD
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tristate "Kontron sl28cpld PWM support"
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depends on MFD_SL28CPLD || COMPILE_TEST
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help
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Generic PWM framework driver for board management controller
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found on the Kontron sl28 CPLD.
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To compile this driver as a module, choose M here: the module
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will be called pwm-sl28cpld.
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config PWM_SPEAR
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tristate "STMicroelectronics SPEAr PWM support"
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depends on PLAT_SPEAR || COMPILE_TEST
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depends on HAS_IOMEM && OF
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help
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Generic PWM framework driver for the PWM controller on ST
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SPEAr SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-spear.
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config PWM_SPRD
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tristate "Spreadtrum PWM support"
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depends on ARCH_SPRD || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for the PWM controller on
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Spreadtrum SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-sprd.
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config PWM_STI
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tristate "STiH4xx PWM support"
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depends on ARCH_STI || COMPILE_TEST
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depends on HAS_IOMEM && OF
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help
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Generic PWM framework driver for STiH4xx SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-sti.
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config PWM_STM32
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tristate "STMicroelectronics STM32 PWM"
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depends on MFD_STM32_TIMERS || COMPILE_TEST
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help
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Generic PWM framework driver for STM32 SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-stm32.
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config PWM_STM32_LP
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tristate "STMicroelectronics STM32 PWM LP"
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depends on MFD_STM32_LPTIMER || COMPILE_TEST
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help
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Generic PWM framework driver for STMicroelectronics STM32 SoCs
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with Low-Power Timer (LPTIM).
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To compile this driver as a module, choose M here: the module
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will be called pwm-stm32-lp.
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config PWM_STMPE
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bool "STMPE expander PWM export"
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depends on MFD_STMPE
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help
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This enables support for the PWMs found in the STMPE I/O
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expanders.
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config PWM_SUN4I
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tristate "Allwinner PWM support"
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depends on ARCH_SUNXI || COMPILE_TEST
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depends on HAS_IOMEM && COMMON_CLK
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help
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Generic PWM framework driver for Allwinner SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-sun4i.
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config PWM_TEGRA
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tristate "NVIDIA Tegra PWM support"
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depends on ARCH_TEGRA || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for the PWFM controller found on NVIDIA
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Tegra SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-tegra.
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config PWM_TIECAP
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tristate "ECAP PWM support"
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depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
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depends on HAS_IOMEM
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help
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PWM driver support for the ECAP APWM controller found on TI SOCs
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To compile this driver as a module, choose M here: the module
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will be called pwm-tiecap.
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config PWM_TIEHRPWM
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tristate "EHRPWM PWM support"
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depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
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depends on HAS_IOMEM
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help
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PWM driver support for the EHRPWM controller found on TI SOCs
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To compile this driver as a module, choose M here: the module
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will be called pwm-tiehrpwm.
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config PWM_TWL
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tristate "TWL4030/6030 PWM support"
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depends on TWL4030_CORE
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help
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Generic PWM framework driver for TWL4030/6030.
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To compile this driver as a module, choose M here: the module
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will be called pwm-twl.
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config PWM_TWL_LED
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tristate "TWL4030/6030 PWM support for LED drivers"
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depends on TWL4030_CORE
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help
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Generic PWM framework driver for TWL4030/6030 LED terminals.
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To compile this driver as a module, choose M here: the module
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will be called pwm-twl-led.
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config PWM_VISCONTI
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tristate "Toshiba Visconti PWM support"
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depends on ARCH_VISCONTI || COMPILE_TEST
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help
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PWM Subsystem driver support for Toshiba Visconti SoCs.
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To compile this driver as a module, choose M here: the module
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will be called pwm-visconti.
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config PWM_VT8500
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tristate "vt8500 PWM support"
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depends on ARCH_VT8500 || COMPILE_TEST
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depends on HAS_IOMEM
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help
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Generic PWM framework driver for vt8500.
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To compile this driver as a module, choose M here: the module
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will be called pwm-vt8500.
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endif
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