[PATCH/RFT] mmc: meson-gx: include tx phase in the tuning process

[Jerome Brunet]

On Tue, 2017-09-19 at 20:54 +0200, Heiner Kallweit wrote:
> > > Unfortunately this still doesn't fix the issue here.
> > > Tuning rx and tx clk sequentially assumes both are independent, what they
> > > IMHO are not. So meybe we have to check all combinations of rx/tx clk
> > > phase.
> > 
> > Interesting, I would be curious to know what tuning value you ended with,
> > compared to the "hard-coded' working value you have set.
> > 
> > You can get that fairly easily now, using CCF in debugfs, in
> > <debugfs>/clk/clk_summary, the different phase are reported
> > 
> 
> This gives me:
> 
> core phase: 180
> rx phase: 0
> tx phase: 270
> 
> And I end up with a corrupted root file system.

You should have had tuning on both the Rx and Tx phase and yet, you end up with
the default values ... that's strange

I should be able to get my hands on 16GB emmc module for this platform soon.
Let's see ...