From 20ff2fe60aa86683a68cd369c919ae6a98059c80 Mon Sep 17 00:00:00 2001 From: Huang Shijie Date: Thu, 30 May 2013 14:07:12 +0800 Subject: serial: imx: add support for DTE mode The uart works in the DCE mode by default, but sometime we need it works at the DTE mode. This patch adds the support for the DTE mode. Signed-off-by: Huang Shijie Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/imx.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/tty') diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 72bc1dbcd055..381a2d79593c 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -201,6 +201,7 @@ struct imx_port { unsigned int old_status; int txirq, rxirq, rtsirq; unsigned int have_rtscts:1; + unsigned int dte_mode:1; unsigned int use_irda:1; unsigned int irda_inv_rx:1; unsigned int irda_inv_tx:1; @@ -1020,6 +1021,8 @@ imx_set_termios(struct uart_port *port, struct ktermios *termios, ufcr = readl(sport->port.membase + UFCR); ufcr = (ufcr & (~UFCR_RFDIV)) | UFCR_RFDIV_REG(div); + if (sport->dte_mode) + ufcr |= UFCR_DCEDTE; writel(ufcr, sport->port.membase + UFCR); writel(num, sport->port.membase + UBIR); @@ -1444,6 +1447,9 @@ static int serial_imx_probe_dt(struct imx_port *sport, if (of_get_property(np, "fsl,irda-mode", NULL)) sport->use_irda = 1; + if (of_get_property(np, "fsl,dte-mode", NULL)) + sport->dte_mode = 1; + sport->devdata = of_id->data; return 0; -- cgit v1.2.3