The H616 DRAM controller requires some board specific parameters, which
we declare in Kconfig, let each board specify in their defconfig, and
then use in the DRAM init code.
Other DRAM controllers now require a very similar, if not identical
parameter set, with so far the same parameter names used.
To help keep the Kconfig file at bay, rename the existing parameter
names to drop the H616_ part in there, to make them more naturally
reusable for other SoCs.
No functional change, just a rename.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
With the recent "old-style sunxi" sync and the penultimate OF_UPSTREAM DT
update, both directories were based on the same v6.10 kernel tree.
And while there is one subtle difference in many Allwinner SoC's DT
files, the H616 ones turn out to be identical.
Remove the old copies of the H616 related .dts and .dtsi files, and
switch the whole H616 SoC over to use OF_UPSTREAM. This immediately
benefits from the recent upstream DT update, to kernel v6.11.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
The OrangePi Zero 2W is a tiny development board featuring the Allwinner
H618 SoC, shipping with up to 4GB of LPDDR4 DRAM, a mini-HDMI connector,
two USB Type-C sockets and a 16MB SPI NOR flash.
There is an FPC connector to connect an expansion board, which sports
two more USB Type-A sockets and a 100MBit Ethernet port. Support for
the expansion board is not in the DT yet, probably a DT overlay would
cover this in the future.
Add a defconfig file selecting the right drivers and DRAM options.
Since the .dts file was synced from the Linux kernel repo already, we
just need to add one line to the Makefile to actually build the .dtb.
The DRAM parameters were derived from the values found in the BSP DRAM
drivers on the SPI NOR flash.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
