181385818SMasahiro Yamadamenu "Clock" 281385818SMasahiro Yamada 3f26c8a8eSSimon Glassconfig CLK 4f26c8a8eSSimon Glass bool "Enable clock driver support" 5f26c8a8eSSimon Glass depends on DM 6f26c8a8eSSimon Glass help 7f26c8a8eSSimon Glass This allows drivers to be provided for clock generators, including 8f26c8a8eSSimon Glass oscillators and PLLs. Devices can use a common clock API to request 9f26c8a8eSSimon Glass a particular clock rate and check on available clocks. Clocks can 10f26c8a8eSSimon Glass feed into other clocks in a tree structure, with multiplexers to 11f26c8a8eSSimon Glass choose the source for each clock. 12f26c8a8eSSimon Glass 1305435891SMasahiro Yamadaconfig SPL_CLK 14f26c8a8eSSimon Glass bool "Enable clock support in SPL" 15f26c8a8eSSimon Glass depends on CLK 16f26c8a8eSSimon Glass help 17f26c8a8eSSimon Glass The clock subsystem adds a small amount of overhead to the image. 18f26c8a8eSSimon Glass If this is acceptable and you have a need to use clock drivers in 19f26c8a8eSSimon Glass SPL, enable this option. It might provide a cleaner interface to 20f26c8a8eSSimon Glass setting up clocks within SPL, and allows the same drivers to be 21f26c8a8eSSimon Glass used as U-Boot proper. 2281385818SMasahiro Yamada 23*dd7c7494SPaul Burtonconfig CLK_BOSTON 24*dd7c7494SPaul Burton def_bool y if TARGET_BOSTON 25*dd7c7494SPaul Burton depends on CLK 26*dd7c7494SPaul Burton select REGMAP 27*dd7c7494SPaul Burton select SYSCON 28*dd7c7494SPaul Burton help 29*dd7c7494SPaul Burton Enable this to support the clocks 30*dd7c7494SPaul Burton 31d9fd7008SStephen Warrensource "drivers/clk/tegra/Kconfig" 3248264d9bSMasahiro Yamadasource "drivers/clk/uniphier/Kconfig" 33166097e8SThomas Abrahamsource "drivers/clk/exynos/Kconfig" 349e5935c0SWenyou Yangsource "drivers/clk/at91/Kconfig" 3548264d9bSMasahiro Yamada 3681385818SMasahiro Yamadaendmenu 37