Leif, > I have managed to flashed a 36-bits u-boot to my p4080 board. > > I have put in two 4Gb dimm into the board but it doesn't work. > > I got the following from u-boot. > > [snip] > DRAM: Initializing.... > > Error: DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] should not be set at > the same time. >
"RD_EN" means "registered DIMM enable" which is read from PROM on memory module. Looks like you have CONFIG_DDR_2T_TIMING defined in your board header ... which is mutually exclusive with registered DIMM usage. 2T timing is only useful if you have AC timing violations regarding setup/hold on Addr/Cmd Bus. > Error: DDR_SDRAM_CFG[RD_EN] and DDR_SDRAM_CFG[2T_EN] should not be set at > the same time. > > 6144M left unmapped > > DDR: 8 GB > > """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" > > It seams that it is something wrong with the DDR initiation. > no. You can either use unregistered DIMM modules or simply undefine CONFIG_DDR_2T_TIMING. Cheers, André MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
