xref: /linux/Documentation/ABI/testing/sysfs-driver-aspeed-uart-routing (revision 5b193d6a8973655f19de87a7873ce31dee2d5fe6)
1What:		/sys/bus/platform/drivers/aspeed-uart-routing/\*/uart\*
2Date:		September 2021
3Contact:	Oskar Senft <osk@google.com>
4		Chia-Wei Wang <chiawei_wang@aspeedtech.com>
5Description:	Selects the RX source of the UARTx device.
6
7		When read, each file shows the list of available options with currently
8		selected option marked by brackets "[]". The list of available options
9		depends on the selected file.
10
11		E.g.::
12
13		  cat /sys/bus/platform/drivers/aspeed-uart-routing/\*.uart_routing/uart1
14		  [io1] io2 io3 io4 uart2 uart3 uart4 io6
15
16		In this case, UART1 gets its input from IO1 (physical serial port 1).
17
18Users:		OpenBMC.  Proposed changes should be mailed to
19		openbmc@lists.ozlabs.org
20
21What:		/sys/bus/platform/drivers/aspeed-uart-routing/\*/io\*
22Date:		September 2021
23Contact:	Oskar Senft <osk@google.com>
24		Chia-Wei Wang <chiawei_wang@aspeedtech.com>
25Description:	Selects the RX source of IOx serial port. The current selection
26		will be marked by brackets "[]".
27Users:		OpenBMC.  Proposed changes should be mailed to
28		openbmc@lists.ozlabs.org
29