1menu "Clock" 2 3config CLK 4 bool "Enable clock driver support" 5 depends on DM 6 help 7 This allows drivers to be provided for clock generators, including 8 oscillators and PLLs. Devices can use a common clock API to request 9 a particular clock rate and check on available clocks. Clocks can 10 feed into other clocks in a tree structure, with multiplexers to 11 choose the source for each clock. 12 13config SPL_CLK 14 bool "Enable clock support in SPL" 15 depends on CLK && SPL && SPL_DM 16 help 17 The clock subsystem adds a small amount of overhead to the image. 18 If this is acceptable and you have a need to use clock drivers in 19 SPL, enable this option. It might provide a cleaner interface to 20 setting up clocks within SPL, and allows the same drivers to be 21 used as U-Boot proper. 22 23config TPL_CLK 24 bool "Enable clock support in TPL" 25 depends on CLK && TPL_DM 26 help 27 The clock subsystem adds a small amount of overhead to the image. 28 If this is acceptable and you have a need to use clock drivers in 29 SPL, enable this option. It might provide a cleaner interface to 30 setting up clocks within TPL, and allows the same drivers to be 31 used as U-Boot proper. 32 33config CLK_BCM6345 34 bool "Clock controller driver for BCM6345" 35 depends on CLK && ARCH_BMIPS 36 default y 37 help 38 This clock driver adds support for enabling and disabling peripheral 39 clocks on BCM6345 SoCs. HW has no rate changing capabilities. 40 41config CLK_BOSTON 42 def_bool y if TARGET_BOSTON 43 depends on CLK 44 select REGMAP 45 select SYSCON 46 help 47 Enable this to support the clocks 48 49config SPL_CLK_CCF 50 bool "SPL Common Clock Framework [CCF] support " 51 depends on SPL 52 help 53 Enable this option if you want to (re-)use the Linux kernel's Common 54 Clock Framework [CCF] code in U-Boot's SPL. 55 56config SPL_CLK_COMPOSITE_CCF 57 bool "SPL Common Clock Framework [CCF] composite clk support " 58 depends on SPL_CLK_CCF 59 help 60 Enable this option if you want to (re-)use the Linux kernel's Common 61 Clock Framework [CCF] composite code in U-Boot's SPL. 62 63config CLK_CCF 64 bool "Common Clock Framework [CCF] support " 65 help 66 Enable this option if you want to (re-)use the Linux kernel's Common 67 Clock Framework [CCF] code in U-Boot's clock driver. 68 69config CLK_COMPOSITE_CCF 70 bool "Common Clock Framework [CCF] composite clk support " 71 depends on CLK_CCF 72 help 73 Enable this option if you want to (re-)use the Linux kernel's Common 74 Clock Framework [CCF] composite code in U-Boot's clock driver. 75 76config CLK_INTEL 77 bool "Enable clock driver for Intel x86" 78 depends on CLK && X86 79 help 80 This provides very basic support for clocks on Intel SoCs. The driver 81 is barely used at present but could be expanded as needs arise. 82 Much clock configuration in U-Boot is either set up by the FSP, or 83 set up by U-Boot itself but only statically. Thus the driver does not 84 support changing clock rates, only querying them. 85 86config CLK_OCTEON 87 bool "Clock controller driver for Marvell MIPS Octeon" 88 depends on CLK && ARCH_OCTEON 89 default y 90 help 91 Enable this to support the clocks on Octeon MIPS platforms. 92 93config CLK_STM32F 94 bool "Enable clock driver support for STM32F family" 95 depends on CLK && (STM32F7 || STM32F4) 96 default y 97 help 98 This clock driver adds support for RCC clock management 99 for STM32F4 and STM32F7 SoCs. 100 101config CLK_TI_SCI 102 bool "TI System Control Interface (TI SCI) clock driver" 103 depends on CLK && TI_SCI_PROTOCOL && OF_CONTROL 104 help 105 This enables the clock driver support over TI System Control Interface 106 available on some new TI's SoCs. If you wish to use clock resources 107 managed by the TI System Controller, say Y here. Otherwise, say N. 108 109config CLK_HSDK 110 bool "Enable cgu clock driver for HSDK boards" 111 depends on CLK && TARGET_HSDK 112 help 113 Enable this to support the cgu clocks on Synopsys ARC HSDK and 114 Synopsys ARC HSDK-4xD boards 115 116config CLK_VERSAL 117 bool "Enable clock driver support for Versal" 118 depends on ARCH_VERSAL 119 select ZYNQMP_FIRMWARE 120 help 121 This clock driver adds support for clock realted settings for 122 Versal platform. 123 124config CLK_VEXPRESS_OSC 125 bool "Enable driver for Arm Versatile Express OSC clock generators" 126 depends on CLK && VEXPRESS_CONFIG 127 help 128 This clock driver adds support for clock generators present on 129 Arm Versatile Express platforms. 130 131config CLK_ZYNQ 132 bool "Enable clock driver support for Zynq" 133 depends on CLK && ARCH_ZYNQ 134 default y 135 help 136 This clock driver adds support for clock realted settings for 137 Zynq platform. 138 139config CLK_ZYNQMP 140 bool "Enable clock driver support for ZynqMP" 141 depends on ARCH_ZYNQMP 142 select ZYNQMP_FIRMWARE 143 help 144 This clock driver adds support for clock realted settings for 145 ZynqMP platform. 146 147config CLK_STM32MP1 148 bool "Enable RCC clock driver for STM32MP1" 149 depends on ARCH_STM32MP && CLK 150 default y 151 help 152 Enable the STM32 clock (RCC) driver. Enable support for 153 manipulating STM32MP1's on-SoC clocks. 154 155config CLK_CDCE9XX 156 bool "Enable CDCD9XX clock driver" 157 depends on CLK 158 help 159 Enable the clock synthesizer driver for CDCE913/925/937/949 160 series of chips. 161 162config CLK_SCMI 163 bool "Enable SCMI clock driver" 164 depends on SCMI_FIRMWARE 165 help 166 Enable this option if you want to support clock devices exposed 167 by a SCMI agent based on SCMI clock protocol communication 168 with a SCMI server. 169 170source "drivers/clk/analogbits/Kconfig" 171source "drivers/clk/at91/Kconfig" 172source "drivers/clk/exynos/Kconfig" 173source "drivers/clk/imx/Kconfig" 174source "drivers/clk/kendryte/Kconfig" 175source "drivers/clk/meson/Kconfig" 176source "drivers/clk/mvebu/Kconfig" 177source "drivers/clk/owl/Kconfig" 178source "drivers/clk/renesas/Kconfig" 179source "drivers/clk/sunxi/Kconfig" 180source "drivers/clk/sifive/Kconfig" 181source "drivers/clk/tegra/Kconfig" 182source "drivers/clk/uniphier/Kconfig" 183 184config ICS8N3QV01 185 bool "Enable ICS8N3QV01 VCXO driver" 186 depends on CLK 187 help 188 Support for the ICS8N3QV01 Quad-Frequency VCXO (Voltage-Controlled 189 Crystal Oscillator). The output frequency can be programmed via an 190 I2C interface. 191 192config CLK_MPC83XX 193 bool "Enable MPC83xx clock driver" 194 depends on CLK 195 help 196 Support for the clock driver of the MPC83xx series of SoCs. 197 198config SANDBOX_CLK_CCF 199 bool "Sandbox Common Clock Framework [CCF] support " 200 depends on SANDBOX 201 select CLK_CCF 202 help 203 Enable this option if you want to test the Linux kernel's Common 204 Clock Framework [CCF] code in U-Boot's Sandbox clock driver. 205 206endmenu 207