Alan, Thanks for your response, suggested modification helped to get 4.8M baud but not 4.05M as this is being approximated to 4.0M baud which happens in tty_termios_encode_baud_rate(...). I have precise and weird requirement to get 4.05M baud as uart baud clock divisor value changes between 4.0M and 4.05M Baud. Any suggestion? Thanks, Rajanikanth -----Original Message----- From: Alan Cox [mailto:alan@xxxxxxxxxxxxxxxxxxx] Sent: Wednesday, January 11, 2012 6:00 PM To: Rajanikanth H V Cc: linux-serial@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; gregkh@xxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx Subject: Re: tty/serial: Need clarification on Support for 4+M Baudrate On Wed, 11 Jan 2012 17:49:01 +0530 > I have a requirement to interface UART with an external microcontroller > using baud rate above 4Mbps, hence following is my approach to apply > the changes. Can any one review/provide me appropriate approach. See TCGETS2/TCSETS2 and the BOTHER flag. The kernel supports aetting arbitary baud rates already. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
