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 "Clock controller driver for BCM6345"
35 depends on CLK && ARCH_BMIPS
38 This clock driver adds support for enabling and disabling peripheral
39 clocks on BCM6345 SoCs. HW has no rate changing capabilities.
42 def_bool y if TARGET_BOSTON
47 Enable this to support the clocks
50 bool "SPL Common Clock Framework [CCF] support "
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.
56 config SPL_CLK_COMPOSITE_CCF
57 bool "SPL Common Clock Framework [CCF] composite clk support "
58 depends on SPL_CLK_CCF
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.
64 bool "Common Clock Framework [CCF] support "
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.
69 config CLK_COMPOSITE_CCF
70 bool "Common Clock Framework [CCF] composite clk support "
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.
77 bool "Enable clock driver for Intel x86"
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.
87 bool "Clock controller driver for Marvell MIPS Octeon"
88 depends on CLK && ARCH_OCTEON
91 Enable this to support the clocks on Octeon MIPS platforms.
94 bool "Enable clock driver support for STM32F family"
95 depends on CLK && (STM32F7 || STM32F4)
98 This clock driver adds support for RCC clock management
99 for STM32F4 and STM32F7 SoCs.
102 bool "Enable cgu clock driver for HSDK boards"
103 depends on CLK && TARGET_HSDK
105 Enable this to support the cgu clocks on Synopsys ARC HSDK and
106 Synopsys ARC HSDK-4xD boards
109 bool "Enable clock driver support for Versal"
110 depends on ARCH_VERSAL
111 select ZYNQMP_FIRMWARE
113 This clock driver adds support for clock realted settings for
116 config CLK_VEXPRESS_OSC
117 bool "Enable driver for Arm Versatile Express OSC clock generators"
118 depends on CLK && VEXPRESS_CONFIG
120 This clock driver adds support for clock generators present on
121 Arm Versatile Express platforms.
124 bool "Enable clock driver support for Zynq"
125 depends on CLK && ARCH_ZYNQ
128 This clock driver adds support for clock related settings for
131 config CLK_XLNX_CLKWZRD
132 bool "Xilinx Clocking Wizard"
135 Support for the Xilinx Clocking Wizard IP core clock generator.
136 The wizard support for dynamically reconfiguring the clocking
137 primitives for Multiply, Divide, Phase Shift/Offset, or Duty
138 Cycle. Limited by U-Boot clk uclass without set_phase API and
139 set_duty_cycle API, this driver only supports set_rate to modify
143 bool "Enable clock driver support for ZynqMP"
144 depends on ARCH_ZYNQMP
145 select ZYNQMP_FIRMWARE
147 This clock driver adds support for clock realted settings for
151 bool "Enable RCC clock driver for STM32MP1"
152 depends on ARCH_STM32MP && CLK
155 Enable the STM32 clock (RCC) driver. Enable support for
156 manipulating STM32MP1's on-SoC clocks.
159 bool "Enable CDCD9XX clock driver"
162 Enable the clock synthesizer driver for CDCE913/925/937/949
166 bool "Enable SCMI clock driver"
167 depends on SCMI_FIRMWARE
169 Enable this option if you want to support clock devices exposed
170 by a SCMI agent based on SCMI clock protocol communication
174 bool "Clock support for Kendryte K210"
177 This enables support clock driver for Kendryte K210 platforms.
179 config CLK_K210_SET_RATE
180 bool "Enable setting the Kendryte K210 PLL rate"
183 Add functionality to calculate new rates for K210 PLLs. Enabling this
184 feature adds around 1K to U-Boot's final size.
186 source "drivers/clk/analogbits/Kconfig"
187 source "drivers/clk/at91/Kconfig"
188 source "drivers/clk/exynos/Kconfig"
189 source "drivers/clk/imx/Kconfig"
190 source "drivers/clk/meson/Kconfig"
191 source "drivers/clk/microchip/Kconfig"
192 source "drivers/clk/mvebu/Kconfig"
193 source "drivers/clk/owl/Kconfig"
194 source "drivers/clk/renesas/Kconfig"
195 source "drivers/clk/sunxi/Kconfig"
196 source "drivers/clk/sifive/Kconfig"
197 source "drivers/clk/tegra/Kconfig"
198 source "drivers/clk/ti/Kconfig"
199 source "drivers/clk/uniphier/Kconfig"
202 bool "Enable ICS8N3QV01 VCXO driver"
205 Support for the ICS8N3QV01 Quad-Frequency VCXO (Voltage-Controlled
206 Crystal Oscillator). The output frequency can be programmed via an
210 bool "Enable MPC83xx clock driver"
213 Support for the clock driver of the MPC83xx series of SoCs.
215 config SANDBOX_CLK_CCF
216 bool "Sandbox Common Clock Framework [CCF] support "
220 Enable this option if you want to test the Linux kernel's Common
221 Clock Framework [CCF] code in U-Boot's Sandbox clock driver.
223 config CLK_VERSACLOCK
224 tristate "Enable VersaClock 5/6 devices"
227 depends on OF_CONTROL
229 This driver supports the IDT VersaClock 5 and VersaClock 6
230 programmable clock generators.