Update the Freedom U540 defconfig to work with:
- AMD GPUs attached with PCIe MicroSemi Expansion board
- Including Wayland and X11 display via HDMI
- USB input attached with PCIe MicroSemi Expansion board
At the same time we are also swapping to use the config output of
savedefconfig instead of copying the entire .config file. This
simplifies the defconfig management.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
To avoid conflicts with the MicroSemi PCIe root complex (the one most
commonly used) remove the Xilinx config.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Add the 4.20 kernel. This involves editing some of the required
Freedom-U540 patches as they conflict with the 4.20 tree, but we want to
keep them for the 4.19 tree.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Modify freedom-u540 machine to boot off of sd card by default.
Note that there is a bug with the U540's SPI controller that
makes this painfully slow.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
