On 2/6/20 1:57 PM, Nico Becker wrote: > Am 06.02.2020 um 12:53 schrieb Marek Vasut: >> On 2/6/20 11:50 AM, Nico Becker wrote: >>> Hello, >> >> Hi, >> >>> after removing the function socfpga_sdram_apply_static_cfg() in >>> misc_gen5 we can not use the FPGA2SDRAM bridge. >>> >>> Without the apply static cfg the kernel crash every time, >>> if we try to write @ the fpga2sdram bridge. After an soft reset >>> everything is working. >>> >>> If we add the socfpga_sdram_apply_static_cfg() in the >>> u-boot source code, everything is fine. >>> Now we can use the fpga2sdram bridge after power on. >>> >>> Our setup: >>> - u-boot v2020.01 >>> - load and write fpga firmware >>> - enable bridges >>> - boot linux >>> >>> I have found some information at >>> <https://support.criticallink.com/redmine/projects/mityarm-5cs/wiki/Important_Note_about_FPGAHPS_SDRAM_Bridge> >>> >>> >>> <http://u-boot.10912.n7.nabble.com/WG-Linux-hang-td314276.html> >> >> Can you send a patch which fixes this for you, with Fixes: tag ? >> Then it would be clear what you changed. >> >> Thanks >> > > Hello, > the code was removed @ commit c5f4b805.
Did you read the commit message of that commit and what problem that was solving ? Clearly, reverting the commit isn't the way to go. We need to find a way to unbreak this for you, while not break other platforms. > I attached my patch, sorry for the format, i am new in this. [...]