ATMEL_US_CHRL
mode &= ~(ATMEL_US_NBSTOP | ATMEL_US_PAR | ATMEL_US_CHRL |
mr = atmel_uart_readl(port, ATMEL_US_MR) & ATMEL_US_CHRL;
#define ATMEL_US_CHRL_5 FIELD_PREP(ATMEL_US_CHRL, 0)
#define ATMEL_US_CHRL_6 FIELD_PREP(ATMEL_US_CHRL, 1)
#define ATMEL_US_CHRL_7 FIELD_PREP(ATMEL_US_CHRL, 2)
#define ATMEL_US_CHRL_8 FIELD_PREP(ATMEL_US_CHRL, 3)