diff options
| author |   Geert Uytterhoeven <geert+renesas@glider.be> | 2016-01-04 14:45:19 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-06 22:54:55 -0800 |
| commit | 3a964abe1ef1cfbe82d0ae832d70c7750d673728 (patch) | |
| tree | 5be116ee17cbdd49c037cdda4487f30527201e1a /drivers/tty/serial/sh-sci.c | |
| parent | serial: sh-sci: Add more Serial Mode Register documentation (diff) | |
| download | linux-dev-3a964abe1ef1cfbe82d0ae832d70c7750d673728.tar.xz linux-dev-3a964abe1ef1cfbe82d0ae832d70c7750d673728.zip | |
serial: sh-sci: Preserve SCIFA/SCIFB bit rate config for serial console
SCIFA and SCIFB have additional bit rate config bits in the Serial Mode
Register. Don't touch them when using the port as a serial console, as
we rely on the boot loader to have configured the serial port config.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 65f717395086..b175f8f565d8 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -2202,7 +2202,8 @@ done: } else { /* Don't touch the bit rate configuration */ scr_val = s->cfg->scscr & (SCSCR_CKE1 | SCSCR_CKE0); - smr_val |= serial_port_in(port, SCSMR) & SCSMR_CKS; + smr_val |= serial_port_in(port, SCSMR) & + (SCSMR_CKEDG | SCSMR_SRC_MASK | SCSMR_CKS); dev_dbg(port->dev, "SCR 0x%x SMR 0x%x\n", scr_val, smr_val); serial_port_out(port, SCSCR, scr_val); serial_port_out(port, SCSMR, smr_val); |