| Simon Glass | 36ad234 | 2015-06-23 15:39:15 -0600 | [diff] [blame] | 1 | config CLK |
| 2 | bool "Enable clock driver support" |
| 3 | depends on DM |
| 4 | help |
| 5 | This allows drivers to be provided for clock generators, including |
| 6 | oscillators and PLLs. Devices can use a common clock API to request |
| 7 | a particular clock rate and check on available clocks. Clocks can |
| 8 | feed into other clocks in a tree structure, with multiplexers to |
| 9 | choose the source for each clock. |
| 10 | |
| Masahiro Yamada | b16de45 | 2015-08-12 07:31:46 +0900 | [diff] [blame] | 11 | config SPL_CLK |
| Simon Glass | 36ad234 | 2015-06-23 15:39:15 -0600 | [diff] [blame] | 12 | bool "Enable clock support in SPL" |
| 13 | depends on CLK |
| 14 | help |
| 15 | The clock subsystem adds a small amount of overhead to the image. |
| 16 | If this is acceptable and you have a need to use clock drivers in |
| 17 | SPL, enable this option. It might provide a cleaner interface to |
| 18 | setting up clocks within SPL, and allows the same drivers to be |
| 19 | used as U-Boot proper. |