[U-Boot] [PATCH] arm64: zynqmp: Setup MMU map for DDR at run time

[Michal Simek]

On 26.4.2018 17:21, Alexander Graf wrote:
> On 04/20/2018 09:46 AM, Michal Simek wrote:
>> From: Nitin Jain <nitin.jain at xilinx.com>
>>
>> This patch used for filling the MMU map for DDR at run time based
>> information read from Device Tree or automatically detected from static
>> configuration.
> 
> The sentence above is missing a word somewhere :).
> 
> Also, the description doesn't actually tell me *why* this change is
> needed. What is the problem with the current static map? And what
> exactly changes really with this patch applied?

It is needed because for systems which has for example 1GB of memory but
you map 2GB there could be spurious accesses which we have seen in past
when mapping is not fitting with actual memory installed.

Thanks,
Michal