From mboxrd@z Thu Jan  1 00:00:00 1970
From: grego rigolo <gregorigolo2002@yahoo.fr>
Subject: auto-RTS and TL16C754C
Date: Fri, 11 May 2012 13:18:27 +0100 (BST)
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Hi all,
I am using a TL16C754C in my design and i was wondering why the Auto-RT=
S was not enabled.
Indeed in the 8250.c source code we can read

=46IXME:
=A0=A0=A0 =A0=A0=A0 =A0* - TI16C752 requires control thresholds to be s=
et.
=A0=A0=A0 =A0=A0=A0 =A0* - 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 */

=A0=A0=A0 if (termios->c_cflag & CRTSCTS)
 {
=A0=A0=A0 =A0=A0=A0 efr |=3D (UART_EFR_CTS | UART_EFR_RTS);
=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);

=A0=A0=A0 =A0=A0=A0 up->mcr =3D serial_in(up, UART_MCR);
=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR)=
;

=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
=A0=A0=A0 =A0=A0=A0 up->efr =3D serial_in(up, UART_EFR);
=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);

=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_TI752_TCR, OMAP_UART_TCR_TRIG);
=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_EFR, efr); /* Enable AUTORTS an=
d AUTOCTS */
=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
=A0=A0=A0 =A0=A0=A0 serial_out(up,
 UART_MCR, up->mcr | UART_MCR_RTS);
=A0=A0=A0 =A0=A0=A0 serial_out(up, UART_LCR, cval);


Thanks in advance for your comments

greg
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