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menu "Clock"
config CLK
bool "Enable clock driver support"
depends on DM
help
This allows drivers to be provided for clock generators, including
oscillators and PLLs. Devices can use a common clock API to request
a particular clock rate and check on available clocks. Clocks can
feed into other clocks in a tree structure, with multiplexers to
choose the source for each clock.
config SPL_CLK
bool "Enable clock support in SPL"
depends on CLK && SPL && SPL_DM
help
The clock subsystem adds a small amount of overhead to the image.
If this is acceptable and you have a need to use clock drivers in
SPL, enable this option. It might provide a cleaner interface to
setting up clocks within SPL, and allows the same drivers to be
used as U-Boot proper.
config TPL_CLK
bool "Enable clock support in TPL"
depends on CLK && TPL_DM
help
The clock subsystem adds a small amount of overhead to the image.
If this is acceptable and you have a need to use clock drivers in
SPL, enable this option. It might provide a cleaner interface to
setting up clocks within TPL, and allows the same drivers to be
used as U-Boot proper.
config SPL_CLK_CCF
bool "SPL Common Clock Framework [CCF] support "
depends on SPL
help
Enable this option if you want to (re-)use the Linux kernel's Common
Clock Framework [CCF] code in U-Boot's SPL.
config SPL_CLK_COMPOSITE_CCF
bool "SPL Common Clock Framework [CCF] composite clk support "
depends on SPL_CLK_CCF
help
Enable this option if you want to (re-)use the Linux kernel's Common
Clock Framework [CCF] composite code in U-Boot's SPL.
config CLK_CCF
bool "Common Clock Framework [CCF] support "
help
Enable this option if you want to (re-)use the Linux kernel's Common
Clock Framework [CCF] code in U-Boot's clock driver.
config CLK_COMPOSITE_CCF
bool "Common Clock Framework [CCF] composite clk support "
depends on CLK_CCF
help
Enable this option if you want to (re-)use the Linux kernel's Common
Clock Framework [CCF] composite code in U-Boot's clock driver.
config CLK_BCM6345
bool "Clock controller driver for BCM6345"
depends on CLK && ARCH_BMIPS
default y
help
This clock driver adds support for enabling and disabling peripheral
clocks on BCM6345 SoCs. HW has no rate changing capabilities.
config CLK_BOSTON
def_bool y if TARGET_BOSTON
depends on CLK
select REGMAP
select SYSCON
help
Enable this to support the clocks
config CLK_CDCE9XX
bool "Enable CDCD9XX clock driver"
depends on CLK
help
Enable the clock synthesizer driver for CDCE913/925/937/949
series of chips.
config CLK_ICS8N3QV01
bool "Enable ICS8N3QV01 VCXO driver"
depends on CLK
help
Support for the ICS8N3QV01 Quad-Frequency VCXO (Voltage-Controlled
Crystal Oscillator). The output frequency can be programmed via an
I2C interface.
config CLK_INTEL
bool "Enable clock driver for Intel x86"
depends on CLK && X86
help
This provides very basic support for clocks on Intel SoCs. The driver
is barely used at present but could be expanded as needs arise.
Much clock configuration in U-Boot is either set up by the FSP, or
set up by U-Boot itself but only statically. Thus the driver does not
support changing clock rates, only querying them.
config CLK_K210
bool "Clock support for Kendryte K210"
depends on CLK
help
This enables support clock driver for Kendryte K210 platforms.
config CLK_K210_SET_RATE
bool "Enable setting the Kendryte K210 PLL rate"
depends on CLK_K210
help
Add functionality to calculate new rates for K210 PLLs. Enabling this
feature adds around 1K to U-Boot's final size.
config CLK_MPC83XX
bool "Enable MPC83xx clock driver"
depends on CLK
help
Support for the clock driver of the MPC83xx series of SoCs.
config CLK_OCTEON
bool "Clock controller driver for Marvell MIPS Octeon"
depends on CLK && ARCH_OCTEON
default y
help
Enable this to support the clocks on Octeon MIPS platforms.
config SANDBOX_CLK_CCF
bool "Sandbox Common Clock Framework [CCF] support "
depends on SANDBOX
select CLK_CCF
help
Enable this option if you want to test the Linux kernel's Common
Clock Framework [CCF] code in U-Boot's Sandbox clock driver.
config CLK_SCMI
bool "Enable SCMI clock driver"
depends on SCMI_FIRMWARE
help
Enable this option if you want to support clock devices exposed
by a SCMI agent based on SCMI clock protocol communication
with a SCMI server.
config CLK_STM32F
bool "Enable clock driver support for STM32F family"
depends on CLK && (STM32F7 || STM32F4)
default y
help
This clock driver adds support for RCC clock management
for STM32F4 and STM32F7 SoCs.
config CLK_STM32MP1
bool "Enable RCC clock driver for STM32MP1"
depends on ARCH_STM32MP && CLK
default y
help
Enable the STM32 clock (RCC) driver. Enable support for
manipulating STM32MP1's on-SoC clocks.
config CLK_HSDK
bool "Enable cgu clock driver for HSDK boards"
depends on CLK && TARGET_HSDK
help
Enable this to support the cgu clocks on Synopsys ARC HSDK and
Synopsys ARC HSDK-4xD boards
config CLK_VERSACLOCK
tristate "Enable VersaClock 5/6 devices"
depends on CLK
depends on CLK_CCF
depends on OF_CONTROL
help
This driver supports the IDT VersaClock 5 and VersaClock 6
programmable clock generators.
config CLK_VERSAL
bool "Enable clock driver support for Versal"
depends on ARCH_VERSAL
select ZYNQMP_FIRMWARE
help
This clock driver adds support for clock realted settings for
Versal platform.
config CLK_VEXPRESS_OSC
bool "Enable driver for Arm Versatile Express OSC clock generators"
depends on CLK && VEXPRESS_CONFIG
help
This clock driver adds support for clock generators present on
Arm Versatile Express platforms.
config CLK_XLNX_CLKWZRD
bool "Xilinx Clocking Wizard"
depends on CLK
help
Support for the Xilinx Clocking Wizard IP core clock generator.
The wizard support for dynamically reconfiguring the clocking
primitives for Multiply, Divide, Phase Shift/Offset, or Duty
Cycle. Limited by U-Boot clk uclass without set_phase API and
set_duty_cycle API, this driver only supports set_rate to modify
the frequency.
config CLK_ZYNQ
bool "Enable clock driver support for Zynq"
depends on CLK && ARCH_ZYNQ
default y
help
This clock driver adds support for clock related settings for
Zynq platform.
config CLK_ZYNQMP
bool "Enable clock driver support for ZynqMP"
depends on ARCH_ZYNQMP
select ZYNQMP_FIRMWARE
help
This clock driver adds support for clock realted settings for
ZynqMP platform.
source "drivers/clk/analogbits/Kconfig"
source "drivers/clk/at91/Kconfig"
source "drivers/clk/exynos/Kconfig"
source "drivers/clk/imx/Kconfig"
source "drivers/clk/meson/Kconfig"
source "drivers/clk/microchip/Kconfig"
source "drivers/clk/mvebu/Kconfig"
source "drivers/clk/owl/Kconfig"
source "drivers/clk/renesas/Kconfig"
source "drivers/clk/sunxi/Kconfig"
source "drivers/clk/sifive/Kconfig"
source "drivers/clk/tegra/Kconfig"
source "drivers/clk/ti/Kconfig"
source "drivers/clk/uniphier/Kconfig"
endmenu
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