Enable UART after driver removal without reboot

Ayush Singh ayushdevel1325 at gmail.com
Fri Aug 18 09:29:42 EDT 2023

Hello everyone.

I have a Linux Serdev driver [1] that uses a specific UART. To actually 
access the UART directly (`/dev/ttyS4`), I have to enable a device tree 
[2] and reboot the device. I was wondering if there was a better way to 
go about it.

Is it possible to disable bcfserial (thereby enabling `/dev/ttyS4`) when 
the driver is removed (using rmmod)? I need access to `/dev/ttyS4` to 
flash new firmware to BeaglePlay CC1352 using bsl [3]. Having to restart 
everytime I or anyone else wants to update firmware is not great, while 

I am looking for a cycle like this: `rmmod driver` -> `flash firmware` 
-> `modprobe driver`.

Ayush Singh




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