linux/Documentation/ABI/testing/sysfs-driver-aspeed-uart-routing

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What: /sys/bus/platform/drivers/aspeed-uart-routing/\*/uart\*
Date: September 2021
Contact: Oskar Senft <osk@google.com>
Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Description: Selects the RX source of the UARTx device.
When read, each file shows the list of available options with currently
selected option marked by brackets "[]". The list of available options
depends on the selected file.
e.g.
cat /sys/bus/platform/drivers/aspeed-uart-routing/\*.uart_routing/uart1
[io1] io2 io3 io4 uart2 uart3 uart4 io6
In this case, UART1 gets its input from IO1 (physical serial port 1).
Users: OpenBMC. Proposed changes should be mailed to
openbmc@lists.ozlabs.org
What: /sys/bus/platform/drivers/aspeed-uart-routing/\*/io\*
Date: September 2021
Contact: Oskar Senft <osk@google.com>
Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Description: Selects the RX source of IOx serial port. The current selection
will be marked by brackets "[]".
Users: OpenBMC. Proposed changes should be mailed to
openbmc@lists.ozlabs.org