[U-Boot] [PATCH V5 31/31] imx: add i.MX8MQ EVK support

[Stefano Babic]

Hi Peng,

On 23/01/2018 02:54, Peng Fan wrote:
>>
>> I guess we will not have any improvement here, at least for first version.
> 
> I'll give a try to improve the ddr controller part. For ddr phy
> part, it is impossible to do that, it was autogenerated by tool
> from synopsys.

ok, I supposed something of this type - no human being will generate
this mess :-).

Anyway, this is fine if we can describe how it works. We have already
such a case with Altera SOCFPGA: the Altera's tool generates headers for
DDR and they are just imported into u-boot. Search for "qts"
directories, for example ./board/altera/arria5-socdk/qts. But if these
files are generated, we should also be sure that we do not need to
change them in U-Boot: tool generates DDR files, and we import them in
U-Boot. If tool produces them in another format such as a table, we just
need a small converter (python, perl, ...) that translates the tables
into C header / files (as we already do for assembly, for example). In
this way the chain is not broken: synopsys generates the files, we
import them into U-Boot and this becomes straightforward for board
maintainers.

Best regards,
Stefano

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