On 6/14/19 9:11 AM, Andrey Smirnov wrote: > On Thu, Jun 13, 2019 at 8:14 AM Yazdani, Reyhaneh > <RYazdani@xxxxxxxxxxxxxx> wrote: >> >> Hello Everyone, >> >> I am trying to bringup Barebox on i.MX8MM-evk. >> >> I have followed all the commits related to the i.MX8MQ and added proper files >> and changes for i.MX8MM-evk board. >> >> The problem is Barebox stops at "ddrc_phy_wait_training_complete" function, >> exactly at sub-function "ddrc_phy_get_message". The read-value from the >> >> phy + DDRC_PHY_REG(0xd0004) is not correct, and it remains in while loop. >> >> I used the ddr_init and ddrphy_train files produced from mscale_ddr_tool of NXP, >> and even compared with the value from U-boot. All are similar. >> >> Does any body have an idea what would be the problem? >> > > What about DDR PHY firmware? Is it the same as in working U-boot > image? From what you describe it sounds that DDR PHY is not > responding, so I am wondering if DDR firmware is running. Also, did > you check that various memory offsets in, say > arch/arm/mach-imx/include/mach/imx8-ddrc.h are valid for i.MX8MM and > are not values that MQ specific? Another thing to debug this would be > to trace all of the register reads/writes in working U-Boot vs Barebox > and see what the difference is. > > Anyway, just my 2 cents. > > Thanks, > Andrey Smirnov > Thanks Andrey. I have read back all the DDR init writes and I am wonder the problem is related to when the DDRC config starts (even before loading the Firmware). It seems DDRC configuration is not applied, while when I read back the registers, the values are all identical and not the one should be. The point is, I still cannot find which configuration should be applied before starting DDRC configuration. I have traced all registers r/w in Barebox and U-boot, but no success. Best, Reyhaneh -- Reyhaneh Yazdani Data Modul AG TEL: +49-89-56017-154 Embedded development FAX: +49-89-56017-119 Linux - Development RG: HR-Muenchen B-85591 Landsberger Str. 322 D-80687 Muenchen - http://www.data-modul.com Vertrauliche E-Mail von / Confidential e-mail from: DATA MODUL AG Vorstand / CEO: Dr. Florian Pesahl Vorsitzende des Aufsichtsrates / Chairwoman of the Supervisory Board: Kristin D. Russell Sitz der Gesellschaft / Registered Office: München Registergericht / Registration Court: München Handelsregister B 85 591 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
