[meta-xilinx] [meta-xilinx-community][PATCH 1/7] microzed-zynq7: Update machine configuration

[David Andrey]

> Sorry that should say "ramfs" not "initramfs". Have a read of the kernel documentation around ramdisk/ramfs. They are different but ramfs can be
> every useful as a replacement for a ramdisk, as having to configure the kernel every time the rootfs size increases can get tedious. Picking a
> default /dev/ram sizing is always tricky because it depends not only on how big the ramdisk is at boot, but also how much extra space in using
> during runtime as well as how much memory is available.

> https://www.kernel.org/doc/Documentation/filesystems/ramfs-rootfs-initramfs.txt

Thanks for your input!

> However I am inclined to think that increasing the default value to 32768 in the meta-xilinx configs (only for zynq) might be a better solution in
> the case that larger ramdisk's are needed?

It would be a more appropriate default value, I guess. And reasonable considering the current Zynq boards. 


> The Xilinx driver is not mainline, which means disabling the MACB driver for all kernels essentially breaks linux-yocto kernels for this board. Is 
> the only reason for your preference of the emacps driver its throughput?

We had other small issue, like PHY detections. I should do the tests again to give some clear statement

> To make it default for the microzed, disabling MACB for linux-xlnx kernels with something similar to below could be done to this patch.

> KERNEL_FEATURES_pn-linux-xlnx += "features/xilinx/disable-macb.scc"

Will work well for the microZed

Regards
David