Hi all,
I am using a TL16C754C in my design and i was wondering why the Auto-RTS was not enabled.
Indeed in the 8250.c source code we can read
FIXME:
* - TI16C752 requires control thresholds to be set.
* - UART_MCR_RTS is ineffective if auto-RTS mode is enabled
In the serial-omap.c, i saw that auto-rts had been enabled:
/* Hardware Flow Control Configuration */
if (termios->c_cflag & CRTSCTS)
{
efr |= (UART_EFR_CTS | UART_EFR_RTS);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
up->mcr = serial_in(up, UART_MCR);
serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
up->efr = serial_in(up, UART_EFR);
serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG);
serial_out(up, UART_EFR, efr); /* Enable AUTORTS and AUTOCTS */
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
serial_out(up,
UART_MCR, up->mcr | UART_MCR_RTS);
serial_out(up, UART_LCR, cval);
Thanks in advance for your comments
greg
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