[meta-freescale] imx6ul uart modem lines and the device tree

[Oliver Graute]

Hello,

I try to use the GPIO2_IO20 and the GPIO2_IO21 as GPIO pin for uart
modem signals and not as PIN to the USDHC1 sdcard interface of the
imx6ulevk.

if I write 5 direct to the MUX Ctrl Register

devmem2 0x020e01cc w 5
devmem2 0x020e01d0 w 5

it works until next boot.

I assume that I have to change something in the device tree files of
linux to reflect the HW gpio changes. How do I adjust the
imx6ul-14x14-evk-csi.dts for this?

Best Regards,

Oliver