default or selected kernelversion does not have config value CONFIG_BFIN_UART1_CTSRTS.
Result is shown for kernelversion 6.7-rc3
Enable UART1 hardware flow control
configname: CONFIG_BFIN_UART1_CTSRTS
Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Enable UART1 hardware flow control
In linux kernel since version 2.6.24 (release Date: 2008-01-24)
Enable hardware flow control in the driver.