Serial: ns16550: Add support for CONFIG_SYS_NS16550_IER macro
On some processors this ier register configuration is different
for ex. Marvell Armada100
This patch introduce CONFIG_SYS_NS16550_IER macro support to
unconditionally initialize this register.
Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
diff --git a/drivers/serial/ns16550.c b/drivers/serial/ns16550.c
index 32f24de..8eeb48f 100644
--- a/drivers/serial/ns16550.c
+++ b/drivers/serial/ns16550.c
@@ -24,9 +24,13 @@
#define serial_in(y) readb(y)
#endif
+#ifndef CONFIG_SYS_NS16550_IER
+#define CONFIG_SYS_NS16550_IER 0x00
+#endif /* CONFIG_SYS_NS16550_IER */
+
void NS16550_init (NS16550_t com_port, int baud_divisor)
{
- serial_out(0x00, &com_port->ier);
+ serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
#if defined(CONFIG_OMAP) && !defined(CONFIG_OMAP3_ZOOM2)
serial_out(0x7, &com_port->mdr1); /* mode select reset TL16C750*/
#endif
@@ -52,7 +56,7 @@
#ifndef CONFIG_NS16550_MIN_FUNCTIONS
void NS16550_reinit (NS16550_t com_port, int baud_divisor)
{
- serial_out(0x00, &com_port->ier);
+ serial_out(CONFIG_SYS_NS16550_IER, &com_port->ier);
serial_out(UART_LCR_BKSE | UART_LCRVAL, &com_port->lcr);
serial_out(0, &com_port->dll);
serial_out(0, &com_port->dlm);