On 26 April 2017 at 16:36, Philipp Tomsich <philipp.toms...@theobroma-systems.com> wrote: > This adds a simple driver for reading the efuse block of the RK3399. > It should be easy enough to add drivers for other devices (e.g. the > RK3328, RK3368, etc.) by passing the device details via driver_data. > > Unlike the kernel driver (using the nvmem subsystem), we don't expose > the efuse as multiple named cells, but rather as a linear memory that > can be read using misc_read(...). > > The primary use case (as of today) is the generation of a 'serial#' > (and a 'cpuid#') environment variable for the RK3399-Q7 (Puma) > system-on-module. > > Note that this adds a debug-only (i.e. only if DEBUG is defined) > command 'rk3399_dump_efuses' that dumps the efuse block's content. > N.B.: The name 'rk3399_dump_efuses' was intentionally chosen to > include a SoC-name (together with a comment in the function) to > remind whoever adds support for additional SoCs that this > function currently makes assumptions regarding the size of the > fuse-box based on the RK3399. The hope is that the function is > adjusted to reflect any changes resulting from generalising the > driver for multiple SoCs and is then renamed. > > Signed-off-by: Philipp Tomsich <philipp.toms...@theobroma-systems.com> > Tested-by: Klaus Goger <klaus.go...@theobroma-systems.com> > --- > > drivers/misc/Kconfig | 14 ++++ > drivers/misc/Makefile | 1 + > drivers/misc/rockchip-efuse.c | 163 > ++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 178 insertions(+) > create mode 100644 drivers/misc/rockchip-efuse.c
Acked-by: Simon Glass <s...@chromium.org> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot