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uboot-1.1.4-kirkwood/board/cogent/serial.h
2024-01-07 23:57:24 +01:00

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566 B
C

/* Line Status Register bits */
#define LSR_DR 0x01 /* Data ready */
#define LSR_OE 0x02 /* Overrun */
#define LSR_PE 0x04 /* Parity error */
#define LSR_FE 0x08 /* Framing error */
#define LSR_BI 0x10 /* Break */
#define LSR_THRE 0x20 /* Xmit holding register empty */
#define LSR_TEMT 0x40 /* Xmitter empty */
#define LSR_ERR 0x80 /* Error */
#define CLKRATE 3686400 /* cogent motherboard serial clk = 3.6864MHz */
#define DEFDIV 1 /* default to 230400 bps */
#define br_to_div(br) (CLKRATE / (16 * (br)))
#define div_to_br(div) (CLKRATE / (16 * (div)))