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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-01-20 14:01:31 -0300 |
| commit | b4b7ff4b08e691656c9d77c758fc355833128ac0 (patch) | |
| tree | 82fcb00e6b918026dc9f2d1f05ed8eee83874cc0 /drivers/tty/serial/mpc52xx_uart.c | |
| parent | 35acfa0fc609f2a2cd95cef4a6a9c3a5c38f1778 (diff) | |
Linux-libre 4.4-gnupck-4.4-gnu
Diffstat (limited to 'drivers/tty/serial/mpc52xx_uart.c')
| -rw-r--r-- | drivers/tty/serial/mpc52xx_uart.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c index 41de374d9..8c3e51314 100644 --- a/drivers/tty/serial/mpc52xx_uart.c +++ b/drivers/tty/serial/mpc52xx_uart.c @@ -1135,6 +1135,13 @@ mpc52xx_uart_startup(struct uart_port *port) psc_ops->command(port, MPC52xx_PSC_RST_RX); psc_ops->command(port, MPC52xx_PSC_RST_TX); + /* + * According to Freescale's support the RST_TX command can produce a + * spike on the TX pin. So they recommend to delay "for one character". + * One millisecond should be enough for everyone. + */ + msleep(1); + psc_ops->set_sicr(port, 0); /* UART mode DCD ignored */ psc_ops->fifo_init(port); |