[PATCH] ARM: mxs: Add serial number support for i.MX23, i.MX28 SoCs

[Fabio Estevam]

Hi Ivan,

On Wed, Nov 11, 2020 at 2:19 AM Ivan Zaentsev
<ivan.zaentsev at wirenboard.ru> wrote:
>
> i.MX23 and i.MX28 SoCs unique identifiers are factory-programmed
> in On-Chip OTP memory. i.MX28's 64-bit unique id is in
> HW_OCOTP_OPS2:HW_OCOTP_OPS3 (see MCIMX28 Ref. Man., sec. 20.4.22-23).
>
> i.MX23 provides 32-bit long unique id in HW_OCOTP_OPS3.
> Though not clearly documented, there is a clue in sec. 35.9.3.
>
> The unique id is reported in /sys/devices/soc0/serial_number
> and in /proc/cpuinfo
>
> Signed-off-by: Ivan Zaentsev <ivan.zaentsev at wirenboard.ru>
> Suggested-by: Evgeny Boger <boger at wirenboard.com>

It looks good, thanks:

Reviewed-by: Fabio Estevam <festevam at gmail.com>