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* [PATCH 0/2] nvmem: meson-efuse: add write support
@ 2018-03-16 15:01 Jerome Brunet
  2018-03-16 15:01 ` [PATCH 1/2] nvmem: meson-efuse: remove econfig global Jerome Brunet
                   ` (3 more replies)
  0 siblings, 4 replies; 6+ messages in thread
From: Jerome Brunet @ 2018-03-16 15:01 UTC (permalink / raw)
  To: Srinivas Kandagatla, Carlo Caione, Kevin Hilman
  Cc: Jerome Brunet, linux-amlogic, linux-kernel

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].

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

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

Jerome Brunet (2):
  nvmem: meson-efuse: remove econfig global
  nvmem: meson-efuse: add write support

 drivers/nvmem/meson-efuse.c | 37 +++++++++++++++++++++++++++----------
 1 file changed, 27 insertions(+), 10 deletions(-)

-- 
2.14.3

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2018-04-19 17:42 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-03-16 15:01 [PATCH 0/2] nvmem: meson-efuse: add write support Jerome Brunet
2018-03-16 15:01 ` [PATCH 1/2] nvmem: meson-efuse: remove econfig global Jerome Brunet
2018-03-16 15:01 ` [PATCH 2/2] nvmem: meson-efuse: add write support Jerome Brunet
2018-04-19 14:13 ` [PATCH 0/2] " Jerome Brunet
2018-04-19 14:29   ` Srinivas Kandagatla
2018-04-19 17:42 ` Kevin Hilman

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