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@sansarus sansarus commented Dec 8, 2025

with pad = <PAD_UART0_TX> impossible to pinmux FUART (ttyS2). Any echo / cat to /dev/ttyS2 and /dev/ttyS1 reset control register (0x1f203C0C) to 0x10 and 0x100.

with pad = <PAD_FUART_TX> ttyS2 muxed to FUART_TX by echo > /dev/ttyS2 and can be fully controled by 0x1f203C0C. ttyS1 also controlled by 0x1f203C0C
(0x20 for ttyS2 at 43/43 pins, 0x200 for ttyS1 at 45/46 pins, 0x0 - gpio modes, SSC335)

also this DT workable at ssc335DE.
Tested at ANJ MS-J10 pcb and UNV-RT 8283swc-we-b

with pad = <PAD_UART0_TX>  impossible to pinmux FUART (ttyS2).  Any echo / cat     to /dev/ttyS2  and /dev/ttyS1  reset control register (0x1f203C0C) to 0x10  and 0x100. 

with pad = <PAD_FUART_TX>   ttyS2  muxed to FUART_TX  by echo > /dev/ttyS2 and  can be fully controled by  0x1f203C0C.  ttyS1 also controlled by 0x1f203C0C  
(0x20 for ttyS2  at 43/43 pins,  0x200 for ttyS1 at 45/46 pins,  0x0 - gpio modes,   SSC335) 


also this DT  workable at ssc335DE. 
Tested at  ANJ  MS-J10 pcb and  UNV-RT  8283swc-we-b
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