4 bool "Enable clock driver support"
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.
14 bool "Enable clock support in SPL"
15 depends on CLK && SPL && SPL_DM
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.
24 bool "Enable clock support in TPL"
25 depends on CLK && TPL_DM
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.
34 bool "SPL Common Clock Framework [CCF] support "
37 Enable this option if you want to (re-)use the Linux kernel's Common
38 Clock Framework [CCF] code in U-Boot's SPL.
40 config SPL_CLK_COMPOSITE_CCF
41 bool "SPL Common Clock Framework [CCF] composite clk support "
42 depends on SPL_CLK_CCF
44 Enable this option if you want to (re-)use the Linux kernel's Common
45 Clock Framework [CCF] composite code in U-Boot's SPL.
48 bool "Common Clock Framework [CCF] support "
50 Enable this option if you want to (re-)use the Linux kernel's Common
51 Clock Framework [CCF] code in U-Boot's clock driver.
53 config CLK_COMPOSITE_CCF
54 bool "Common Clock Framework [CCF] composite clk support "
57 Enable this option if you want to (re-)use the Linux kernel's Common
58 Clock Framework [CCF] composite code in U-Boot's clock driver.
61 bool "Clock controller driver for BCM6345"
62 depends on CLK && ARCH_BMIPS
65 This clock driver adds support for enabling and disabling peripheral
66 clocks on BCM6345 SoCs. HW has no rate changing capabilities.
69 def_bool y if TARGET_BOSTON
74 Enable this to support the clocks
77 bool "Enable CDCD9XX clock driver"
80 Enable the clock synthesizer driver for CDCE913/925/937/949
84 bool "Enable ICS8N3QV01 VCXO driver"
87 Support for the ICS8N3QV01 Quad-Frequency VCXO (Voltage-Controlled
88 Crystal Oscillator). The output frequency can be programmed via an
92 bool "Enable clock driver for Intel x86"
95 This provides very basic support for clocks on Intel SoCs. The driver
96 is barely used at present but could be expanded as needs arise.
97 Much clock configuration in U-Boot is either set up by the FSP, or
98 set up by U-Boot itself but only statically. Thus the driver does not
99 support changing clock rates, only querying them.
102 bool "Clock support for Kendryte K210"
105 This enables support clock driver for Kendryte K210 platforms.
107 config CLK_K210_SET_RATE
108 bool "Enable setting the Kendryte K210 PLL rate"
111 Add functionality to calculate new rates for K210 PLLs. Enabling this
112 feature adds around 1K to U-Boot's final size.
115 bool "Enable MPC83xx clock driver"
118 Support for the clock driver of the MPC83xx series of SoCs.
121 bool "Clock controller driver for Marvell MIPS Octeon"
122 depends on CLK && ARCH_OCTEON
125 Enable this to support the clocks on Octeon MIPS platforms.
127 config SANDBOX_CLK_CCF
128 bool "Sandbox Common Clock Framework [CCF] support "
132 Enable this option if you want to test the Linux kernel's Common
133 Clock Framework [CCF] code in U-Boot's Sandbox clock driver.
136 bool "Enable SCMI clock driver"
137 depends on SCMI_FIRMWARE
139 Enable this option if you want to support clock devices exposed
140 by a SCMI agent based on SCMI clock protocol communication
144 bool "Enable clock driver support for STM32F family"
145 depends on CLK && (STM32F7 || STM32F4)
148 This clock driver adds support for RCC clock management
149 for STM32F4 and STM32F7 SoCs.
152 bool "Enable RCC clock driver for STM32MP1"
153 depends on ARCH_STM32MP && CLK
156 Enable the STM32 clock (RCC) driver. Enable support for
157 manipulating STM32MP1's on-SoC clocks.
160 bool "Enable cgu clock driver for HSDK boards"
161 depends on CLK && TARGET_HSDK
163 Enable this to support the cgu clocks on Synopsys ARC HSDK and
164 Synopsys ARC HSDK-4xD boards
166 config CLK_VERSACLOCK
167 tristate "Enable VersaClock 5/6 devices"
170 depends on OF_CONTROL
172 This driver supports the IDT VersaClock 5 and VersaClock 6
173 programmable clock generators.
176 bool "Enable clock driver support for Versal"
177 depends on ARCH_VERSAL
178 select ZYNQMP_FIRMWARE
180 This clock driver adds support for clock realted settings for
183 config CLK_VEXPRESS_OSC
184 bool "Enable driver for Arm Versatile Express OSC clock generators"
185 depends on CLK && VEXPRESS_CONFIG
187 This clock driver adds support for clock generators present on
188 Arm Versatile Express platforms.
190 config CLK_XLNX_CLKWZRD
191 bool "Xilinx Clocking Wizard"
194 Support for the Xilinx Clocking Wizard IP core clock generator.
195 The wizard support for dynamically reconfiguring the clocking
196 primitives for Multiply, Divide, Phase Shift/Offset, or Duty
197 Cycle. Limited by U-Boot clk uclass without set_phase API and
198 set_duty_cycle API, this driver only supports set_rate to modify
202 bool "Enable clock driver support for Zynq"
203 depends on CLK && ARCH_ZYNQ
206 This clock driver adds support for clock related settings for
210 bool "Enable clock driver support for ZynqMP"
211 depends on ARCH_ZYNQMP
212 select ZYNQMP_FIRMWARE
214 This clock driver adds support for clock realted settings for
217 source "drivers/clk/analogbits/Kconfig"
218 source "drivers/clk/at91/Kconfig"
219 source "drivers/clk/exynos/Kconfig"
220 source "drivers/clk/imx/Kconfig"
221 source "drivers/clk/meson/Kconfig"
222 source "drivers/clk/microchip/Kconfig"
223 source "drivers/clk/mvebu/Kconfig"
224 source "drivers/clk/owl/Kconfig"
225 source "drivers/clk/renesas/Kconfig"
226 source "drivers/clk/sunxi/Kconfig"
227 source "drivers/clk/sifive/Kconfig"
228 source "drivers/clk/tegra/Kconfig"
229 source "drivers/clk/ti/Kconfig"
230 source "drivers/clk/uniphier/Kconfig"