Hello Abdul Basit: > .I noticed that the following lines are coming twice: > > SF: Detected S25FL129P_64K/S25FL128S_64K with page size 64 KiB, total 16 MiB > > This corresponds to the function spi_flash_probe from > drivers/mtd/spi/spi_flash.c > > I need to know: > > 1- Why it is probed twice? > 2- The name and location of the file from where it is called (twice). > 3- The second time it is being probed is considerably slow, why it is so?
It is hard to tell what is happening here because so much information is missing, but I will venture a few guesses: The first probe probably occurs when the environment is read, in env_sf.c; I am assuming that the environment is located in QSPI flash. The second probe is probably due to a boot command which reads the Linux kernel from QSPI flash, and runs 'sf probe' from cmd_sf.c; try running 'printenv'. The flash probe itself should always take the same (rather short) amount of time. Reading a Linux kernel from flash is slower than reading a small environment block, though, because the kernel is much bigger. Hope that helps, Thomas Betker _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
