Dear Vladimir Zapolskiy,
On 11/30/13 17:42, Marek Vasut wrote:
Dear Vladimir Zapolskiy,
For LPC32XX high-speed UART it is required to send a carriage return symbol along with line feed.
Why ?
The problem was introduced in e503f90a commit.
Signed-off-by: Vladimir Zapolskiyvz@mleia.com Cc: Marek Vasutmarex@denx.de
drivers/serial/lpc32xx_hsuart.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/serial/lpc32xx_hsuart.c b/drivers/serial/lpc32xx_hsuart.c index 9c7c621..c8926a8 100644 --- a/drivers/serial/lpc32xx_hsuart.c +++ b/drivers/serial/lpc32xx_hsuart.c @@ -38,6 +38,9 @@ static int lpc32xx_serial_getc(void)
static void lpc32xx_serial_putc(const char c) {
if (c == '\n')
serial_putc('\r');writel(c,&hsuart->tx);
/* Wait for character to be sent */
btw. I have a feeling each and every driver does send CR-LF combo and emulates it this way. Maybe this should eventually go into common code ? But that's just a suggestion for future improvement.
No objections from my side, however it seems that not every particular serial controller requires such a hook, for code generalization it may be good to have it for all drivers, but strict enforcement may be redundant for some subset.
This would need further investigation, very detailed one.
Best regards, Marek Vasut