[PATCH v2 0/3] nvmem: meson-efuse: add write support

From: Jerome Brunet
Date: Mon Apr 23 2018 - 08:42:20 EST

This changeset adds write support to meson efuse driver.
The first patch just changes the way the nvmem data are allocated w/o
any functional changes. The second patches actually adds write support.

The memory being an OTP, it is safer if it remains read-only by default,
which is why I also submitted this DT patch [0]. It has now been merged by

If a user knows what he is doing, it should be easy to remove the
read-only property from the board DT. This can be done in u-boot, before
starting linux:

> fdt rm /efuse read-only

Tested on the gxl libretech-cc

Changes since v1 [1]:
- Remove un-necessary code in callbacks
- Rebase on v4.17-rc1

[0]: https://lkml.kernel.org/r/20180316145021.8517-1-jbrunet@xxxxxxxxxxxx
[1]: https://lkml.kernel.org/r/20180316150113.9779-1-jbrunet@xxxxxxxxxxxx

Jerome Brunet (3):
nvmem: meson-efuse: remove econfig global
nvmem: meson-efuse: simplify read callback
nvmem: meson-efuse: add write support

drivers/nvmem/meson-efuse.c | 41 ++++++++++++++++++++++-------------------
1 file changed, 22 insertions(+), 19 deletions(-)