H/W or S/W flow control of uart

[priyanka23]

I am using openwrt Linux on a router. Using mediatek mt7620a controller. Controller has two uarts lite and full. Full UART driver is enabled from DTS and I could communicate on it but the issue is that RTC CTS pins are not considered by the driver which is concluded by using docklite manual setting of RTS CTS pins. I could not find the controlling of this pins from drivers so was trying to figure out where and how is Linux implementing this control so that if it is not present in current openwrt implementation then I should do small hack to implement it. By the way this is my first job and first assignment to find out the working.Thanks

 

[atanere]

Hi @priyanka23, and welcome! I am sorry that I cannot really be of any help to you to solve your problem. But Google showed me some data references that might give you some insights.

MT7620 Datasheet Very detailed (54 pages)
MT7620 Programming Guide Very detailed (523 pages)
OpenWRT page about MT7620a Links on this page may show something helpful.

Good luck on your assignment!

Cheers