[U-Boot] Loading kernel from SD card slow on MinnowBoard Turbot since v2016.09

[Jaehoon Chung]

Hi,

On 10/21/2016 01:27 AM, Raschen Josef wrote:
> Hi,
> 
> Reading a kernel image from an SD card via the fatload command on the MinnowBoard Turbot seems to be significantly slower since v2016.09 compared to v2016.07:
> 
> v2016.07
> => fatload mmc 1:1 ${loadaddr} bzImage ; zboot ${loadaddr}
> reading bzImage
> 5749232 bytes read in 129 ms (42.5 MiB/s)
> 
> v2016.09
> => fatload mmc 1:1 ${loadaddr} bzImage ; zboot ${loadaddr}
> reading bzImage
> 5749232 bytes read in 249 ms (22 MiB/s)
> 
> The same for v2016.11-rc1. 
> 
> I am using U-Boot in bare mode on the board. Any idea what causes this?

Could you share which driver you use?

Best Regards,
Jaehoon Chung

> 
> Thanks,
> Josef
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