UART5 RXD

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1

Hey all,

I am having trouble getting serial data off of UART5 RXD. Here is my output:

root@omap:/home# cat /sys/kernel/debug/omap_mux/lcd_data14
name: lcd_data14.(null) (0x44e108d8/0x8d8 = 0x0024), b NA, t NA
mode: OMAP_PIN_OUTPUT | OMAP_MUX_MODE4
signals: lcd_data14 | gpmc_a18 | NA | mcasp0_axr1 | NA | NA | NA | gpio0_10
root@omap:/home#

For mode 4 it says NA. Am I missing something? The system reference says that P8 pin 31 mode 4 is UART5 RXD.

2

Have you tried using it, ignoring what the omap_mux says? I remember reading somewhere that the mux modes are fraught with N/A where they shouldn’t be, but the physical hardware still works.

3

Yeah ignoring the omap_mux, it worked perfectly fine. Thank you. I need to start a fresh topic on UART4 now. :slight_smile: