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Commit 7dea8165 authored by Jan Kiszka's avatar Jan Kiszka Committed by Greg Kroah-Hartman
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serial: exar: Preconfigure xr17v35x MPIOs as output 



This is the safe default for GPIOs with unknown external wiring.

Signed-off-by: default avatarJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4dec2f11

drivers/tty/serial/8250/8250_exar.c

+2 −2
Original line number Diff line number Diff line
@@ -176,13 +176,13 @@ static void setup_gpio(u8 __iomem *p) 
	writeb(0x00, p + UART_EXAR_MPIOLVL_7_0);

	writeb(0x00, p + UART_EXAR_MPIO3T_7_0);

	writeb(0x00, p + UART_EXAR_MPIOINV_7_0);

	writeb(0x00, p + UART_EXAR_MPIOSEL_7_0);

	writeb(0xff, p + UART_EXAR_MPIOSEL_7_0);

	writeb(0x00, p + UART_EXAR_MPIOOD_7_0);

	writeb(0x00, p + UART_EXAR_MPIOINT_15_8);

	writeb(0x00, p + UART_EXAR_MPIOLVL_15_8);

	writeb(0x00, p + UART_EXAR_MPIO3T_15_8);

	writeb(0x00, p + UART_EXAR_MPIOINV_15_8);

	writeb(0x00, p + UART_EXAR_MPIOSEL_15_8);

	writeb(0xff, p + UART_EXAR_MPIOSEL_15_8);

	writeb(0x00, p + UART_EXAR_MPIOOD_15_8);

}