[PATCH][RFC] 8250_dw: unregister dw8250_set_termios for rk3188 chip

[Shuyu Wei <wsy-flSAGy4ZnMjQT0dZR+AlfA@public.gmane.org>]

dw8250_set_termios is causing problems for rk3188 on my radxa board.
It's using a fixed clock at 24M, not baud*16 in dw8250_set_termios.
I'm not sure if other rk3xxx chips are facing the same problem.

Signed-off-by Wei Shuyu <wsy-flSAGy4ZnMjQT0dZR+AlfA@public.gmane.org>
---
 drivers/tty/serial/8250/8250_dw.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index 5bb0c42c88dd..e760a5c1f3f6 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -340,6 +340,9 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data)
 			data->skip_autocfg = true;
 		}
 #endif
+		if (of_device_is_compatible(np, "rockchip,rk3188-uart")) {
+			p->set_termios = NULL;
+		}
 		if (of_device_is_big_endian(p->dev->of_node)) {
 			p->iotype = UPIO_MEM32BE;
 			p->serial_in = dw8250_serial_in32be;
-- 
2.15.0