This adds additional Kconfig help to clarify the way to use barebox for eFuses handling. Signed-off-by: Paul Fertser <fercerpav@xxxxxxxxx> --- arch/arm/mach-imx/Kconfig | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index 8dc6a24..8d5bd74 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -497,6 +497,12 @@ config IMX_IIM Device driver for the IC Identification Module (IIM) fusebox. Use the regular md/mw commands to program and read the fusebox. + Fuses are grouped in "rows", 8 bits per row. When using md/mw commands, + employ the -b switch and consider the region to be specifying the "Fuse + Row Index" rather than "Fuse Row Offset" (which is FRI * 4). You should + consult the documentation for your chip for more elaborate description, + including the eFuse map, e.g. see AN3682 for i.MX25. + config IMX_IIM_FUSE_BLOW bool "IIM fuses blow support" depends on IMX_IIM @@ -507,6 +513,10 @@ config IMX_IIM_FUSE_BLOW Warning: blown fuses can not be unblown. Using this option may damage your CPU, or make it unbootalbe. Use with care. + Before being actually able to blow the fuses, you need to explicitely + enable it: + imx_iim0.permanent_write_enable=1 + endmenu endif -- 1.7.3.4 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
