[PATCH v2 0/3] Add support for all variants of the phyCORE-i.MX93 SOM

[Christoph Stoidner <c.stoidner@phytec.de>]

The phyCORE-i.MX 93 is available in various variants (e.g. different ram
sizes, eMMC HS400 yes/no). It's eeprom contains information which features
the existing module supports.

Extend the existing board-code to support all the SOM variants. The spl/u-boot
evaluates the eeprom information and enables supported features accordingly.
The resulting spl and u-boot binary is able to boot each phyCORE-i.MX 93 SOM
variant on each carrier board.

Changes in v2:

patch #1:
- remove multiple blank lines
- add update of 1GB ram timings to commit message

patch #2:
- encapsulate handling of feature flag VOLTAGE into own function
- move definition of enum phytec_imx93_ddr_eeprom_code into header file

patch #3:
- just rename imx93-phyboard-segin_defconfig and add needed CONFIGs,
  instead of creating an entirely new second defconfig
- remove wrong comment from imx93-phyboard-segin-u-boot.dtsi
- improve commit message

Christoph Stoidner (3):
  board: phytec: phycore-imx93: Add 2GB LPDDR4X RAM timings
  board: phytec: imx93: Add eeprom-based hardware introspection
  board: phytec: imx93: Add phyCORE-i.MX 93 support for all SOM variants

 arch/arm/dts/imx93-phyboard-segin-u-boot.dtsi |  25 +-
 arch/arm/mach-imx/imx9/Kconfig                |   2 +
 arch/arm/mach-imx/imx9/soc.c                  |   2 +-
 board/phytec/common/Kconfig                   |   8 +
 board/phytec/common/Makefile                  |   1 +
 board/phytec/common/imx93_som_detection.c     | 111 +++
 board/phytec/common/imx93_som_detection.h     |  51 ++
 board/phytec/phycore_imx93/Kconfig            |  28 +
 board/phytec/phycore_imx93/MAINTAINERS        |   7 +-
 board/phytec/phycore_imx93/lpddr4_timing.c    | 793 ++++++++++++++++--
 board/phytec/phycore_imx93/phycore-imx93.c    |  51 ++
 board/phytec/phycore_imx93/spl.c              |  48 ++
 ...egin_defconfig => imx93-phycore_defconfig} |   4 +-
 13 files changed, 1064 insertions(+), 67 deletions(-)
 create mode 100644 board/phytec/common/imx93_som_detection.c
 create mode 100644 board/phytec/common/imx93_som_detection.h
 rename configs/{imx93-phyboard-segin_defconfig => imx93-phycore_defconfig} (98%)

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2.34.1