[PATCH V4 RFC 0/3] nvmem: add ocotp support for i.MX23 and i.MX28

On Monday, July 20, 2015 at 08:37:01 AM, Stefan Wahren wrote:

Hi Marek,

Hi!

Am 20.07.2015 um 00:07 schrieb Marek Vasut:

quoted

On Monday, July 20, 2015 at 12:04:56 AM, Stefan Wahren wrote:

quoted

This patch series brings read-only support for the On-Chip OTP cells
in the i.MX23 and i.MX28 processor.

It has been a long time since V3 of this series [1]. The last version
has been rejected because there was no standard interface to the OTP
data. So this version bases on V7 of the new NVMEM framework [2] which
required a nearly complete rewrite of the driver.

[1] -
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-October/29522
8. html [2] -
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/355652.h
tm l

Are you sure you even want this support in kernel ?

definitely. But only read-only support make sense. Please believe me, i
didn't wait since last year for the NVMEM framework just for fun.

:)

quoted

Isn't it enough to have
this in some manufacturing-time mutated bootloader to program the OTP
once and never touch it again ?

No, our products uses a previous version of this patch series to set the
MAC address of a network interface from OTP data. I also get some
feedback from other users that they are happy about this driver.

OK, now I understand. This makes perfect sense indeed.

Best regards,
Marek Vasut