Recently i moved my distro to yocto sumo from yocto jethro branch. In the kernel, i'm getting the following issue in the UART related with SDMA like,
imx-sdma 20ec000.sdma: external firmware not found, using ROM firmware
We are using uart ports majorly for communication and we are not changing anything related to uart in the imx6ul.dtsi file. Our older BSP(kernel 4.1.15) is completely working fine with the uart application. We want to go with 4.14.78 version for our device, is there any way to use the UART on this version of imx6ul without any trouble??