This series adds support for EEPROM SoM detection used by
different PHYTEC SoMs. The EEPROM data consist of 32 bytes containing
information like PCB revision, RAM size and other SoM specific
configuration.
For SoMs of the i.MX8M family the data is written to two areas of the
used i2c EEPROM.
We initally add the detection support for phyCORE-i.MX8MP. Due to layout
constraints phyCORE-i.MX8MP SoMs with PCB revision 2 and older can only
make use of a lower RAM frequency. This changes with the use of newer PCB
revisions. We make use of the factory flashed EEPROM data to detect the
PCB revision and select the fitting RAM settings.
Teresa
Teresa Remmet (6):
board: phytec: Add common PHYTEC SoM detection
board: phytec: common: Add imx8m specific EEPROM detection support
board: phytec: phycore-imx8mp: Add EEPROM detection initialisation
board: phytec: phycore_imx8mp: Update 2GB RAM Timings
board: phytec: common: phytec_som_detection: Add helper for PCB
revision
board: phytec: phycore_imx8mp: Add 4000MTS RAM timings based on PCB
rev
board/phytec/common/Kconfig | 13 +
board/phytec/common/Makefile | 11 +
board/phytec/common/imx8m_som_detection.c | 169 ++++++++++++
board/phytec/common/imx8m_som_detection.h | 54 ++++
board/phytec/common/phytec_som_detection.c | 203 ++++++++++++++
board/phytec/common/phytec_som_detection.h | 109 ++++++++
board/phytec/phycore_imx8mp/Kconfig | 1 +
board/phytec/phycore_imx8mp/lpddr4_timing.c | 278 ++++++++++----------
board/phytec/phycore_imx8mp/spl.c | 80 ++++++
configs/phycore-imx8mp_defconfig | 1 +
10 files changed, 776 insertions(+), 143 deletions(-)
create mode 100644 board/phytec/common/Kconfig
create mode 100644 board/phytec/common/Makefile
create mode 100644 board/phytec/common/imx8m_som_detection.c
create mode 100644 board/phytec/common/imx8m_som_detection.h
create mode 100644 board/phytec/common/phytec_som_detection.c
create mode 100644 board/phytec/common/phytec_som_detection.h
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2.34.1
