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_STM32F 87 bool "Enable clock driver support for STM32F family" 88 depends on CLK && (STM32F7 || STM32F4) 89 default y 90 help 91 This clock driver adds support for RCC clock management 92 for STM32F4 and STM32F7 SoCs. 93 94config CLK_TI_SCI 95 bool "TI System Control Interface (TI SCI) clock driver" 96 depends on CLK && TI_SCI_PROTOCOL && OF_CONTROL 97 help 98 This enables the clock driver support over TI System Control Interface 99 available on some new TI's SoCs. If you wish to use clock resources 100 managed by the TI System Controller, say Y here. Otherwise, say N. 101 102config CLK_HSDK 103 bool "Enable cgu clock driver for HSDK boards" 104 depends on CLK && TARGET_HSDK 105 help 106 Enable this to support the cgu clocks on Synopsys ARC HSDK and 107 Synopsys ARC HSDK-4xD boards 108 109config CLK_VERSAL 110 bool "Enable clock driver support for Versal" 111 depends on ARCH_VERSAL 112 select ZYNQMP_FIRMWARE 113 help 114 This clock driver adds support for clock realted settings for 115 Versal platform. 116 117config CLK_VEXPRESS_OSC 118 bool "Enable driver for Arm Versatile Express OSC clock generators" 119 depends on CLK && VEXPRESS_CONFIG 120 help 121 This clock driver adds support for clock generators present on 122 Arm Versatile Express platforms. 123 124config CLK_ZYNQ 125 bool "Enable clock driver support for Zynq" 126 depends on CLK && ARCH_ZYNQ 127 default y 128 help 129 This clock driver adds support for clock realted settings for 130 Zynq platform. 131 132config CLK_ZYNQMP 133 bool "Enable clock driver support for ZynqMP" 134 depends on ARCH_ZYNQMP 135 select ZYNQMP_FIRMWARE 136 help 137 This clock driver adds support for clock realted settings for 138 ZynqMP platform. 139 140config CLK_STM32MP1 141 bool "Enable RCC clock driver for STM32MP1" 142 depends on ARCH_STM32MP && CLK 143 default y 144 help 145 Enable the STM32 clock (RCC) driver. Enable support for 146 manipulating STM32MP1's on-SoC clocks. 147 148config CLK_CDCE9XX 149 bool "Enable CDCD9XX clock driver" 150 depends on CLK 151 help 152 Enable the clock synthesizer driver for CDCE913/925/937/949 153 series of chips. 154 155source "drivers/clk/analogbits/Kconfig" 156source "drivers/clk/at91/Kconfig" 157source "drivers/clk/exynos/Kconfig" 158source "drivers/clk/imx/Kconfig" 159source "drivers/clk/meson/Kconfig" 160source "drivers/clk/mvebu/Kconfig" 161source "drivers/clk/owl/Kconfig" 162source "drivers/clk/renesas/Kconfig" 163source "drivers/clk/sunxi/Kconfig" 164source "drivers/clk/sifive/Kconfig" 165source "drivers/clk/tegra/Kconfig" 166source "drivers/clk/uniphier/Kconfig" 167 168config ICS8N3QV01 169 bool "Enable ICS8N3QV01 VCXO driver" 170 depends on CLK 171 help 172 Support for the ICS8N3QV01 Quad-Frequency VCXO (Voltage-Controlled 173 Crystal Oscillator). The output frequency can be programmed via an 174 I2C interface. 175 176config CLK_MPC83XX 177 bool "Enable MPC83xx clock driver" 178 depends on CLK 179 help 180 Support for the clock driver of the MPC83xx series of SoCs. 181 182config SANDBOX_CLK_CCF 183 bool "Sandbox Common Clock Framework [CCF] support " 184 depends on SANDBOX 185 select CLK_CCF 186 help 187 Enable this option if you want to test the Linux kernel's Common 188 Clock Framework [CCF] code in U-Boot's Sandbox clock driver. 189 190endmenu 191