Messages in this thread | | | Date | Mon, 5 Jul 2021 10:48:23 -0400 | From | Ralph Siemsen <> | Subject | Re: [PATCH v2] mtd: rawnand: denali: add more delays before latching incoming data |
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On Mon, Jul 05, 2021 at 01:00:43AM +0900, Masahiro Yamada wrote: > >I no longer have any hardware to test this driver. > >If you increase data_setup_on_host (the current value is 10000), >will it solve your issue?
Yes, it does seem to work with this value increased to 10001.
Looking more closely, I compared timing parameters in struct denali_chip_sel, for the kernel 5.4 (which works), for 5.10 (which fails), and also for 5.10 with data_setup_host=10001 (which works).
5.4 5.10 5.10+10001 acc_clks 2 3 4 rdwr_en_lo_cnt 3 2 3 cs_setup_cnt 1 0 0
So it seems that on my hardware, rdwr_en_lo_cnt must be >= 3.
Regards, Ralph
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