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 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 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_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_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 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_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_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_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. 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_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_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. source "drivers/clk/analogbits/Kconfig" source "drivers/clk/at91/Kconfig" source "drivers/clk/exynos/Kconfig" source "drivers/clk/imx/Kconfig" source "drivers/clk/kendryte/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" config 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_MPC83XX bool "Enable MPC83xx clock driver" depends on CLK help Support for the clock driver of the MPC83xx series of SoCs. 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. endmenu