[PATCH v2 1/5] board: verdin-imx8mp: update ddrc config for different lpddr4 memories

[sbabic at denx.de]

> From: Emanuele Ghidoli <emanuele.ghidoli at toradex.com>
> Add support to Verdin IMX8MP V1.1B SKU which uses
> MT53E1G32D2FW-046 WT:B memory.
> Compared to the 8 GB memory (MT53E2G32D4NQ-046 WT:A) used on
> Verdin IMX8MP V1.0A it has 16 row addresses instead of 17.
> In fact, the new memory, is a 2 GB/rank memory. The 8 GB memory is a
> 4 GB/rank memory.
> Manually tweaking Host Interface addresses vs LPDDR4 signals mapping it
> is possible to have a single configuration working with both memories:
>  - Old configuration: HIF bit 30 -> rank, HIF bit 29 -> Row 16
>  - New configuration: HIF bit 29 -> rank, HIF bit 30 -> Row 16
> With this change the memory space from the host processor is contiguous
> for both the configurations and the correct memory size is computed
> using get_ram_size() at runtime.
> Support for single rank memories still works thanks to the fact
> dual ranks training fails (ddr_init->ddr_cfg_phy) toward single rank
> memories.
> Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli at toradex.com>
> Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>
Applied to u-boot-imx, next, thanks !

Best regards,
Stefano Babic

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