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serial: nsl16550: add hw flow control support

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keystone serial hw support hw flow control. This patch
enables hw flow control for keystone EVMs as an optional
feature based on CONFIG_SERIAL_HW_FLOW_CONTROL.

Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
This commit is contained in:
Karicheri, Muralidharan
2014-04-09 15:38:46 -04:00
committed by Tom Rini
parent 8abd053cf0
commit d57dee5787
3 changed files with 11 additions and 0 deletions
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include/ns16550.h
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@@ -100,6 +100,7 @@ typedef struct NS16550 *NS16550_t;
#define UART_MCR_OUT1 0x04 /* Out 1 */
#define UART_MCR_OUT2 0x08 /* Out 2 */
#define UART_MCR_LOOP 0x10 /* Enable loopback test mode */
#define UART_MCR_AFE 0x20 /* Enable auto-RTS/CTS */
#define UART_MCR_DMA_EN 0x04
#define UART_MCR_TX_DFR 0x08