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Add dram support for the MT53E1G32D2FW-046 RevC part which is a single die
32Gbit density part vs RevA/B which were dual-die parts:
- use a previously unused EEPROM byte to denote a variant of the
base config to be patched
- add a dram description string
- return the board struct from eeprom_init and pass it to the
spl_dram_init function so that it has access to the EEPROM
- move ddr_init into the spl_dram_init so that it can be patched
in the per-soc init function
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
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Move the determination of the dram timings into the soc-specific files.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
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The GW7902 is based on the i.MX 8M Mini / Nano SoC featuring:
- LPDDR4 DRAM
- eMMC FLASH
- Gateworks System Controller
- LTE CAT M1 modem
- USB 2.0 HUB
- M.2 Socket with USB2.0, PCIe, and dual-SIM
- IMX8M FEC
- PCIe based GbE
- RS232/RS485/RS422 serial transceiver
- GPS
- CAN bus
- WiFi / Bluetooth
- MIPI header (DSI/CSI/GPIO/PWM/I2S)
- PMIC
To add support for the i.MX8M Nano GW7902:
- Add imx8mn-venice dts/defconfig/include
- Add imx8mn-gw7902 dts
- Add imx8mn-2gb lpddr4 dram configs
- Add misc support for IMX8M Nano SoC
- rename imx8mm-venice.c to venice.c as it is no longer imx8mm specific
- update README with differences for IMX8MN vs IMX8MM
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
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