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

Hi Marek,

Am 20.07.2015 um 00:07 schrieb Marek Vasut:

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/295228.
html [2] -
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/355652.htm
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.

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.

Regards
Stefan

Best regards,
Marek Vasut

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html