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 "Enable clock support in VPL"
35 depends on CLK && VPL_DM
37 The clock subsystem adds a small amount of overhead to the image.
38 If this is acceptable and you have a need to use clock drivers in
39 SPL, enable this option. It might provide a cleaner interface to
40 setting up clocks within TPL, and allows the same drivers to be
41 used as U-Boot proper.
44 bool "Clock controller driver for BCM6345"
45 depends on CLK && ARCH_BMIPS
48 This clock driver adds support for enabling and disabling peripheral
49 clocks on BCM6345 SoCs. HW has no rate changing capabilities.
52 def_bool y if TARGET_BOSTON
57 Enable this to support the clocks
60 bool "SPL Common Clock Framework [CCF] support "
63 Enable this option if you want to (re-)use the Linux kernel's Common
64 Clock Framework [CCF] code in U-Boot's SPL.
66 config SPL_CLK_COMPOSITE_CCF
67 bool "SPL Common Clock Framework [CCF] composite clk support "
68 depends on SPL_CLK_CCF
70 Enable this option if you want to (re-)use the Linux kernel's Common
71 Clock Framework [CCF] composite code in U-Boot's SPL.
74 bool "Common Clock Framework [CCF] support "
76 Enable this option if you want to (re-)use the Linux kernel's Common
77 Clock Framework [CCF] code in U-Boot's clock driver.
79 config CLK_COMPOSITE_CCF
80 bool "Common Clock Framework [CCF] composite clk support "
83 Enable this option if you want to (re-)use the Linux kernel's Common
84 Clock Framework [CCF] composite code in U-Boot's clock driver.
87 bool "Clock controller driver for BCM6345"
88 depends on CLK && ARCH_BMIPS
91 This clock driver adds support for enabling and disabling peripheral
92 clocks on BCM6345 SoCs. HW has no rate changing capabilities.
95 def_bool y if TARGET_BOSTON
100 Enable this to support the clocks
103 bool "Enable CDCD9XX clock driver"
106 Enable the clock synthesizer driver for CDCE913/925/937/949
109 config CLK_ICS8N3QV01
110 bool "Enable ICS8N3QV01 VCXO driver"
113 Support for the ICS8N3QV01 Quad-Frequency VCXO (Voltage-Controlled
114 Crystal Oscillator). The output frequency can be programmed via an
118 bool "Enable clock driver for Intel x86"
119 depends on CLK && X86
121 This provides very basic support for clocks on Intel SoCs. The driver
122 is barely used at present but could be expanded as needs arise.
123 Much clock configuration in U-Boot is either set up by the FSP, or
124 set up by U-Boot itself but only statically. Thus the driver does not
125 support changing clock rates, only querying them.
128 bool "Clock support for Kendryte K210"
131 This enables support clock driver for Kendryte K210 platforms.
133 config CLK_K210_SET_RATE
134 bool "Enable setting the Kendryte K210 PLL rate"
137 Add functionality to calculate new rates for K210 PLLs. Enabling this
138 feature adds around 1K to U-Boot's final size.
141 bool "Enable MPC83xx clock driver"
144 Support for the clock driver of the MPC83xx series of SoCs.
147 bool "Clock controller driver for Marvell MIPS Octeon"
148 depends on CLK && ARCH_OCTEON
151 Enable this to support the clocks on Octeon MIPS platforms.
153 config SANDBOX_CLK_CCF
154 bool "Sandbox Common Clock Framework [CCF] support "
158 Enable this option if you want to test the Linux kernel's Common
159 Clock Framework [CCF] code in U-Boot's Sandbox clock driver.
162 bool "Enable SCMI clock driver"
163 depends on SCMI_FIRMWARE
165 Enable this option if you want to support clock devices exposed
166 by a SCMI agent based on SCMI clock protocol communication
170 bool "Enable cgu clock driver for HSDK boards"
171 depends on CLK && TARGET_HSDK
173 Enable this to support the cgu clocks on Synopsys ARC HSDK and
174 Synopsys ARC HSDK-4xD boards
176 config CLK_VERSACLOCK
177 tristate "Enable VersaClock 5/6 devices"
180 depends on OF_CONTROL
182 This driver supports the IDT VersaClock 5 and VersaClock 6
183 programmable clock generators.
186 bool "Enable clock driver support for Versal"
187 depends on ARCH_VERSAL
188 select ZYNQMP_FIRMWARE
190 This clock driver adds support for clock realted settings for
193 config CLK_VEXPRESS_OSC
194 bool "Enable driver for Arm Versatile Express OSC clock generators"
195 depends on CLK && VEXPRESS_CONFIG
197 This clock driver adds support for clock generators present on
198 Arm Versatile Express platforms.
200 config CLK_XLNX_CLKWZRD
201 bool "Xilinx Clocking Wizard"
204 Support for the Xilinx Clocking Wizard IP core clock generator.
205 The wizard support for dynamically reconfiguring the clocking
206 primitives for Multiply, Divide, Phase Shift/Offset, or Duty
207 Cycle. Limited by U-Boot clk uclass without set_phase API and
208 set_duty_cycle API, this driver only supports set_rate to modify
212 bool "Enable clock driver support for Zynq"
213 depends on CLK && ARCH_ZYNQ
216 This clock driver adds support for clock related settings for
220 bool "Enable clock driver support for ZynqMP"
221 depends on ARCH_ZYNQMP
222 select ZYNQMP_FIRMWARE
224 This clock driver adds support for clock realted settings for
227 source "drivers/clk/analogbits/Kconfig"
228 source "drivers/clk/at91/Kconfig"
229 source "drivers/clk/exynos/Kconfig"
230 source "drivers/clk/imx/Kconfig"
231 source "drivers/clk/meson/Kconfig"
232 source "drivers/clk/microchip/Kconfig"
233 source "drivers/clk/mvebu/Kconfig"
234 source "drivers/clk/owl/Kconfig"
235 source "drivers/clk/renesas/Kconfig"
236 source "drivers/clk/sunxi/Kconfig"
237 source "drivers/clk/sifive/Kconfig"
238 source "drivers/clk/stm32/Kconfig"
239 source "drivers/clk/tegra/Kconfig"
240 source "drivers/clk/ti/Kconfig"
241 source "drivers/clk/uniphier/Kconfig"