diff options
Diffstat (limited to 'nuttx/configs/sama5d4-ek/include/board_sdram.h')
| -rw-r--r-- | nuttx/configs/sama5d4-ek/include/board_sdram.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/nuttx/configs/sama5d4-ek/include/board_sdram.h b/nuttx/configs/sama5d4-ek/include/board_sdram.h index 338c03818..5b113d17e 100644 --- a/nuttx/configs/sama5d4-ek/include/board_sdram.h +++ b/nuttx/configs/sama5d4-ek/include/board_sdram.h @@ -63,6 +63,13 @@ #define BOARD_PCK_FREQUENCY (sam_pck_frequency(BOARD_MAINOSC_FREQUENCY)) #define BOARD_MCK_FREQUENCY (sam_mck_frequency(BOARD_MAINOSC_FREQUENCY)) +/* Clocking to certain peripherals may be MCK/2. + * + * REVISIT: I am not sure why this is. Perhaps because of H32MXDIV? + */ + +#define BOARD_USART_FREQUENCY (BOARD_MCK_FREQUENCY >> 1) + #if defined(CONFIG_SAMA5_EHCI) || defined(CONFIG_SAMA5_OHCI) || \ defined(CONFIG_SAMA5_UDPHS) |