[PATCH 0/2] mtd: spi-nor: OTP support

Michael Walle michael at walle.cc
Wed Jan 8 15:36:52 PST 2020


This patchset implements the mtd otp functions to allow access to the SPI
OTP data. Specific support is added for the Winbond flash chips.

In the past there was already an attempt by Rahul Bedarkar to add this, but
there was no response. These two patches are slightly based on his work.

https://lore.kernel.org/linux-mtd/1489754636-21461-1-git-send-email-rahul.bedarkar@imgtec.com/

This series is based on top of the following patches. They are not strictly
needed, but the patches might not apply cleanly and - more importantly -
OTP support for the new W25QnnJW flashes, which are added by one of the
patches, is already added.

https://lore.kernel.org/linux-mtd/20200107222317.3527-1-michael@walle.cc/
https://lore.kernel.org/linux-mtd/20200107222317.3527-2-michael@walle.cc/
https://lore.kernel.org/linux-mtd/20200103223423.14025-1-michael@walle.cc/

To dump an OTP area which doesn't start at zero (like for the Winbond
flashes) the following patch must be applied to mtd-utils:

https://lore.kernel.org/linux-mtd/20200108232359.27372-1-michael@walle.cc/

Michael Walle (2):
  mtd: spi-nor: add OTP support
  mtd: spi-nor: implement OTP support for Winbond flashes

 drivers/mtd/spi-nor/spi-nor.c | 279 ++++++++++++++++++++++++++++++++++
 include/linux/mtd/spi-nor.h   |  52 +++++++
 2 files changed, 331 insertions(+)

-- 
2.20.1




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