On Tue, Apr 21, 2015 at 8:42 AM, Ben F. <[email protected]> wrote:
> Hi Guys,
>
> I have a problem.
> What I have done so far for enabling the UART1.
> Downloaded, dtb-rebuilder for Kernel 19, outcommented the two lines for
> tty2, make, make install and reboot.
>
> After reboot I have those results:
>
> cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pingroups
> pin 84 (44e10950.0): 48024000.serial (GPIO UNCLAIMED) function
> pinmux_uart2_pins group pinmux_uart2_pins
> pin 85 (44e10954.0): 48024000.serial (GPIO UNCLAIMED) function
> pinmux_uart2_pins group pinmux_uart2_pins
>
> dmesg |grep serial says:
> [    2.321838] omap8250 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq =
> 154, base_baud = 3000000) is a 8250
> [    2.340061] omap8250 48024000.serial: ttyS2 at MMIO 0x48024000 (irq =
> 155, base_baud = 3000000) is a 8250
>
> Uname -a:
> Linux arm 3.19.0-rc31.2 #2 Fri Apr 17 08:00:32 UTC 2015 armv7l GNU/Linux
>
> I think the pins are muxed correctly. But I thought the name for UART is
> ttyO2 for UART2 and not ttyS2.
> Has it changed with the Kernel Upgrade?? Or do I have to activate it
> somehow?
>

It's been changed as of v3.19.x

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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