Signed-off-by: Graham Gower <graham.gower@xxxxxxxxx>
---
drivers/serial/8250.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index e9b15c3..dfe6640 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -199,7 +199,11 @@ static const struct serial8250_config uart_config[] = {
[PORT_16550A] = {
.name = "16550A",
.fifo_size = 16,
+#ifndef CONFIG_XBURST
.tx_loadsz = 16,
+#else
+ .tx_loadsz = 8,
+#endif
.fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
.flags = UART_CAP_FIFO,
},
@@ -406,6 +410,10 @@ static unsigned int mem_serial_in(struct uart_port *p, int offset)
static void mem_serial_out(struct uart_port *p, int offset, int value)
{
offset = map_8250_out_reg(p, offset) << p->regshift;
+#if defined(CONFIG_XBURST)
+ if (offset == (UART_FCR << p->regshift))
+ value |= 0x10; /* set FCR.UUE */
+#endif
writeb(value, p->membase + offset);
}
@@ -2354,6 +2362,10 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
if (up->capabilities & UART_CAP_UUE)
up->ier |= UART_IER_UUE | UART_IER_RTOIE;
+#ifdef CONFIG_XBURST
+ up->ier |= UART_IER_RTOIE; /* Set this flag, or very slow */
+#endif
+
serial_out(up, UART_IER, up->ier);
if (up->capabilities & UART_CAP_EFR) {
--
1.6.4
