From: Michael Hennerich <michael.hennerich@xxxxxxxxxx> SPORT transmit frame sync (TFS) isn't used as an electrical signal during normal SPORT UART emulation. However, it is useful in EIA RS-485 emulation as RS-485 Transceiver Driver Enable DE strobe. This patch configures: TFS to be active high in order to drive an DE strobe of an eventually connected RS-485 Transceiver. Late frame sync mode (LATFS) gating the entire TX shift cycle. Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx> Signed-off-by: Bryan Wu <cooloney@xxxxxxxxxx> --- drivers/serial/bfin_sport_uart.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/serial/bfin_sport_uart.c b/drivers/serial/bfin_sport_uart.c index fd5cb95..6687ccd 100644 --- a/drivers/serial/bfin_sport_uart.c +++ b/drivers/serial/bfin_sport_uart.c @@ -149,7 +149,7 @@ static int sport_uart_setup(struct sport_uart_port *up, int sclk, int baud_rate) int tclkdiv, tfsdiv, rclkdiv; /* Set TCR1 and TCR2 */ - SPORT_PUT_TCR1(up, (LTFS | ITFS | TFSR | TLSBIT | ITCLK)); + SPORT_PUT_TCR1(up, (LATFS | ITFS | TFSR | TLSBIT | ITCLK)); SPORT_PUT_TCR2(up, 10); pr_debug("%s TCR1:%x, TCR2:%x\n", __func__, SPORT_GET_TCR1(up), SPORT_GET_TCR2(up)); -- 1.6.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html