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* [PATCH 0/6] Add i.MX8MM support
@ 2019-04-19 10:03 Bryan O'Donoghue
  2019-04-19 10:03 ` [PATCH 1/6] nvmem: imx-ocotp: Allow selection of OCOTP for imx8 processors Bryan O'Donoghue
                   ` (5 more replies)
  0 siblings, 6 replies; 10+ messages in thread
From: Bryan O'Donoghue @ 2019-04-19 10:03 UTC (permalink / raw)
  To: l.stach, peng.fan, shawnguo, srinivas.kandagatla, leonard.crestez
  Cc: aisheng.dong, abel.vesa, anson.huang, linux-imx, kernel,
	fabio.estevam, Bryan O'Donoghue, linux-arm-kernel

This set adds support for the i.MX8MM.

When adding support for this processor there are two interesting gotchas to
watch for.

#1 We current do not preserve the WAIT field for i.MX6 and since we are
   reusing the i.MX6 set_timing() values, this would also affect i.MX8.
   On the face of it, it appears to be an inocuous error with no real side
   effects.

#2 Secondly the i.MX8MM will calculate a zero value for the RELAX bit-field
   when programming up OTP fuses.
   This is fine for programming the fuses but, it introduces a strange
   failure state with reloading the shadow registers subsequent to blowing
   an OTP fuse.
   The second important patch here then is ensuring the RELAX field is
   non-zero to avoid the failure state.

Bryan O'Donoghue (6):
  nvmem: imx-ocotp: Allow selection of OCOTP for imx8 processors
  nvmem: imx-ocotp: Fix i.MX OC-OTP naming prompt
  nvmem: imx-ocotp: Add i.MX8MM support
  nvmem: imx-ocotp: Ensure WAIT bits are preserved when setting timing
  nvmem: imx-ocotp: Ensure the RELAX field is non-zero
  dt-bindings: imx-ocotp: Add i.MX8MM support

 .../devicetree/bindings/nvmem/imx-ocotp.txt     |  1 +
 drivers/nvmem/Kconfig                           |  4 ++--
 drivers/nvmem/imx-ocotp.c                       | 17 ++++++++++++++++-
 3 files changed, 19 insertions(+), 3 deletions(-)

-- 
2.20.1


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^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2019-04-19 16:45 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-04-19 10:03 [PATCH 0/6] Add i.MX8MM support Bryan O'Donoghue
2019-04-19 10:03 ` [PATCH 1/6] nvmem: imx-ocotp: Allow selection of OCOTP for imx8 processors Bryan O'Donoghue
2019-04-19 10:03 ` [PATCH 2/6] nvmem: imx-ocotp: Fix i.MX OC-OTP naming prompt Bryan O'Donoghue
2019-04-19 10:03 ` [PATCH 3/6] nvmem: imx-ocotp: Add i.MX8MM support Bryan O'Donoghue
2019-04-19 10:32   ` Leonard Crestez
2019-04-19 11:48     ` Bryan O'Donoghue
2019-04-19 16:45       ` Bryan O'Donoghue
2019-04-19 10:03 ` [PATCH 4/6] nvmem: imx-ocotp: Ensure WAIT bits are preserved when setting timing Bryan O'Donoghue
2019-04-19 10:03 ` [PATCH 5/6] nvmem: imx-ocotp: Ensure the RELAX field is non-zero Bryan O'Donoghue
2019-04-19 10:03 ` [PATCH 6/6] dt-bindings: imx-ocotp: Add i.MX8MM support Bryan O'Donoghue

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