On Thu, 7 May 2020 08:15:37 +0800 "Ramuthevar,Vadivel MuruganX" <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx> wrote: > + reg = readl(ebu_host->ebu + EBU_ADDR_SEL(ebu_host->cs_num)); > + writel(reg | EBU_ADDR_MASK(5) | EBU_ADDR_SEL_REGEN, > + ebu_host->ebu + EBU_ADDR_SEL(ebu_host->cs_num)); Seriously, did you really think I would not notice what you're doing here? You're reading the previous value which either contains a default mapping or has the mapping set by the bootloader, and write it back to the register along with a new mask and the REGEN bit set (which BTW is wrong since you don't mask out other fields before updating them). This confirms that this Core -> FPI address translation exists and has to be set properly, so please stop lying about that.