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Some board designers, when running out of clock output pads, decide to (mis)use PWM output pads to provide a clock to external components. This driver supports this practice by providing an adapter between the PWM and clock bindings in the device tree. As the PWM bindings specify the period in the device tree, this is a fixed clock. Tested-by: Janusz Uzycki <j.uzycki@elproma.com.pl> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Michael Turquette <mturquette@linaro.org>
161 lines
4.3 KiB
Plaintext
161 lines
4.3 KiB
Plaintext
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config CLKDEV_LOOKUP
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bool
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select HAVE_CLK
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config HAVE_CLK_PREPARE
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bool
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config HAVE_MACH_CLKDEV
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bool
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config COMMON_CLK
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bool
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select HAVE_CLK_PREPARE
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select CLKDEV_LOOKUP
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select SRCU
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---help---
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The common clock framework is a single definition of struct
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clk, useful across many platforms, as well as an
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implementation of the clock API in include/linux/clk.h.
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Architectures utilizing the common struct clk should select
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this option.
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menu "Common Clock Framework"
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depends on COMMON_CLK
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config COMMON_CLK_WM831X
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tristate "Clock driver for WM831x/2x PMICs"
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depends on MFD_WM831X
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---help---
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Supports the clocking subsystem of the WM831x/2x series of
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PMICs from Wolfson Microelectronics.
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source "drivers/clk/versatile/Kconfig"
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config COMMON_CLK_MAX_GEN
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bool
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config COMMON_CLK_MAX77686
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tristate "Clock driver for Maxim 77686 MFD"
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depends on MFD_MAX77686
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select COMMON_CLK_MAX_GEN
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---help---
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This driver supports Maxim 77686 crystal oscillator clock.
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config COMMON_CLK_MAX77802
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tristate "Clock driver for Maxim 77802 PMIC"
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depends on MFD_MAX77686
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select COMMON_CLK_MAX_GEN
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---help---
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This driver supports Maxim 77802 crystal oscillator clock.
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config COMMON_CLK_RK808
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tristate "Clock driver for RK808"
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depends on MFD_RK808
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---help---
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This driver supports RK808 crystal oscillator clock. These
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multi-function devices have two fixed-rate oscillators,
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clocked at 32KHz each. Clkout1 is always on, Clkout2 can off
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by control register.
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config COMMON_CLK_SI5351
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tristate "Clock driver for SiLabs 5351A/B/C"
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depends on I2C
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select REGMAP_I2C
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select RATIONAL
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---help---
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This driver supports Silicon Labs 5351A/B/C programmable clock
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generators.
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config COMMON_CLK_SI570
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tristate "Clock driver for SiLabs 570 and compatible devices"
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depends on I2C
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depends on OF
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select REGMAP_I2C
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help
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---help---
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This driver supports Silicon Labs 570/571/598/599 programmable
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clock generators.
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config COMMON_CLK_S2MPS11
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tristate "Clock driver for S2MPS1X/S5M8767 MFD"
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depends on MFD_SEC_CORE
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---help---
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This driver supports S2MPS11/S2MPS14/S5M8767 crystal oscillator
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clock. These multi-function devices have two (S2MPS14) or three
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(S2MPS11, S5M8767) fixed-rate oscillators, clocked at 32KHz each.
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config CLK_TWL6040
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tristate "External McPDM functional clock from twl6040"
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depends on TWL6040_CORE
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---help---
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Enable the external functional clock support on OMAP4+ platforms for
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McPDM. McPDM module is using the external bit clock on the McPDM bus
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as functional clock.
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config COMMON_CLK_AXI_CLKGEN
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tristate "AXI clkgen driver"
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depends on ARCH_ZYNQ || MICROBLAZE
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help
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---help---
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Support for the Analog Devices axi-clkgen pcore clock generator for Xilinx
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FPGAs. It is commonly used in Analog Devices' reference designs.
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config CLK_QORIQ
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bool "Clock driver for Freescale QorIQ platforms"
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depends on (PPC_E500MC || ARM) && OF
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---help---
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This adds the clock driver support for Freescale QorIQ platforms
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using common clock framework.
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config COMMON_CLK_XGENE
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bool "Clock driver for APM XGene SoC"
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default y
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depends on ARM64
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---help---
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Sypport for the APM X-Gene SoC reference, PLL, and device clocks.
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config COMMON_CLK_KEYSTONE
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tristate "Clock drivers for Keystone based SOCs"
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depends on ARCH_KEYSTONE && OF
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---help---
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Supports clock drivers for Keystone based SOCs. These SOCs have local
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a power sleep control module that gate the clock to the IPs and PLLs.
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config COMMON_CLK_PALMAS
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tristate "Clock driver for TI Palmas devices"
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depends on MFD_PALMAS
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---help---
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This driver supports TI Palmas devices 32KHz output KG and KG_AUDIO
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using common clock framework.
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config COMMON_CLK_PWM
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tristate "Clock driver for PWMs used as clock outputs"
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depends on PWM
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---help---
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Adapter driver so that any PWM output can be (mis)used as clock signal
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at 50% duty cycle.
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config COMMON_CLK_PXA
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def_bool COMMON_CLK && ARCH_PXA
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---help---
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Sypport for the Marvell PXA SoC.
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config COMMON_CLK_CDCE706
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tristate "Clock driver for TI CDCE706 clock synthesizer"
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depends on I2C
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select REGMAP_I2C
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select RATIONAL
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---help---
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This driver supports TI CDCE706 programmable 3-PLL clock synthesizer.
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source "drivers/clk/qcom/Kconfig"
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endmenu
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source "drivers/clk/bcm/Kconfig"
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source "drivers/clk/mvebu/Kconfig"
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source "drivers/clk/samsung/Kconfig"
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