diff options
| author | Qipan Li <Qipan.Li@csr.com> | 2015-05-14 08:45:22 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-24 21:50:41 +0200 |
| commit | eab192ae56fd52416af485e3d7ba2c6982200d71 (patch) | |
| tree | 85ba7fc14ea669f07498e437239b6a1457405232 /drivers/tty/serial/sirfsoc_uart.c | |
| parent | serial: sirf: enable ATLAS7 USP serial support (diff) | |
| download | linux-eab192ae56fd52416af485e3d7ba2c6982200d71.tar.xz linux-eab192ae56fd52416af485e3d7ba2c6982200d71.zip | |
serial: sirf: fix the issue that HW flow control doesn't work for BT
>From HW spec, when rxfifo's data is less than AFC_RX_THD(RX threshhold), RTS
signal is active. otherwise, RTS signal is inactive.
Crrently the RX threshhold is set as zero, so RTS has no chance to be
active. This patch replaces the default 0 by a positive number.
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/sirfsoc_uart.c')
| -rw-r--r-- | drivers/tty/serial/sirfsoc_uart.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c index 1d0d47f2a8c2..48cceaf5338a 100644 --- a/drivers/tty/serial/sirfsoc_uart.c +++ b/drivers/tty/serial/sirfsoc_uart.c @@ -344,7 +344,8 @@ static void sirfsoc_uart_enable_ms(struct uart_port *port) if (sirfport->uart_reg->uart_type == SIRF_REAL_UART) { wr_regl(port, ureg->sirfsoc_afc_ctrl, rd_regl(port, ureg->sirfsoc_afc_ctrl) | - SIRFUART_AFC_TX_EN | SIRFUART_AFC_RX_EN); + SIRFUART_AFC_TX_EN | SIRFUART_AFC_RX_EN | + SIRFUART_AFC_CTRL_RX_THD); if (!sirfport->is_atlas7) wr_regl(port, ureg->sirfsoc_int_en_reg, rd_regl(port, ureg->sirfsoc_int_en_reg) |