[PATCH] arm64: zynqmp Add support for zcu102 rev1.1

Marek Vasut marex at denx.de
Thu Mar 12 09:41:45 CET 2020

On 3/12/20 9:33 AM, Michal Simek wrote:
> On 12. 03. 20 9:22, Marek Vasut wrote:
>> On 3/12/20 9:20 AM, Michal Simek wrote:
>>> On 12. 03. 20 9:17, Marek Vasut wrote:
>>>> On 3/12/20 9:14 AM, Michal Simek wrote:
>>>>> rev1.1 has different DDR sodimm module that's why it requires different DDR
>>>>> configuration.
>>>> Can't you move the DRAM configuration to DT at some point ?
>>> That algorithm is not available. In this zcu102 case the part of code is
>>> available in fsbl (which is not gpl) but it just changing some
>>> parameters between sodimm on rev1 and rev1.1. It doesn't contain full
>>> algorithm how to configure the whole ddr controller.
>> Surely Xilinx knows the algorithm , since they developed the chip and
>> the controller ? :)
> You know the answer that's why no reason to answer it.
> And I am not aware about any activity to move DDR generation to any
> first stage bootloader and the standard way available is to configure
> DDR controller via psu_init* files.

"standard" on Xilinx platforms anyway. Surely it would be much nicer if
this hardware property could be described in DT. Can you push for that ?

Best regards,
Marek Vasut

More information about the U-Boot mailing list