On 6 November 2017 at 07:17, Ulf Hansson [off-list ref] wrote:

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Do you mean set it unconditionally? That works for me, but I have no

Yes.

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way of testing whether it still works on other SoCs that use this IP.

Me neither!

Hi all, I can not yet get contact with IP owner because it is a
holiday in Japan.
Around two years ago, F_SDH30_CMD_DAT_DELAY was a new feature of this IP.
I will update the latest information as soon as I get it.

I got a response from IP owner.
He explains F_SDH30_CMD_DAT_DELAY is intended to adjust signal timing of
CMD/DAT lines, and it is necessary to change its value according to
SoC/board design.
So he advises us to make F_SDH30_CMD_DAT_DELAY adjustable by a DT binding.

Kind regards
Vincent

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Apparently there are no DTS in the kernel git that uses the
"fujitsu,mb86s70-sdhci-3.0".

Around two years ago, sdhci_f_sdh30_driver was a portion for mb86s70 SoC
patch series, but finally the patch series did not fully go upstream.

Vincent, thanks for all the help in this!

Ard, one thing, could you please split the DT doc change into a
separate patch, preceding the change that actually do the parsing of
the new binding.

Will do. Thanks.