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 ?