i.MX SoC update for 5.11:
- Add revision detection support for i.MX7ULP revision 2.2.
- Add a little document for i.MX7ULP B2 silicon version.
- Add serial number support for i.MX23, i.MX28 SoCs through soc_device.
- Improve the identifying of i.MX6QP SoCs.
ARM: mxs: Add serial number support for i.MX23, i.MX28 SoCs
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 <firstname.lastname@example.org>
Suggested-by: Evgeny Boger <email@example.com>
Signed-off-by: Shawn Guo <firstname.lastname@example.org>
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