I only have a 4GB v1.2a board. Do a search on the forum and find this topic:
So manually change arch/riscv/boot/dts/starfive/jh7110-visionfive-v2.dtsi#L47
memory@40000000 {
device_type = "memory";
reg = <0x0 0x40000000 0x1 0x0>;
};
to
memory@40000000 {
device_type = "memory";
reg = <0x0 0x40000000 0x2 0x0>;
};
may help.