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mtd: rawnand: gpmi: Restore nfc timing setup after suspend/resume

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commit d70486668cdf51b14a50425ab45fc18677a167b2 upstream.

As we reset the GPMI block at resume, the timing parameters setup by a
previous exec_op is lost.  Rewriting GPMI timing registers on first exec_op
after resume fixes the problem.

Fixes: ef347c0cfd ("mtd: rawnand: gpmi: Implement exec_op")
Cc: stable@vger.kernel.org
Signed-off-by: Esben Haabendal <esben@geanix.com>
Acked-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Esben Haabendal 2020-01-17 21:05:37 +01:00 • committed by Greg Kroah-Hartman
commit fc01fedf5a
1 changed files with 4 additions and 0 deletions
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4
drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
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@ -2727,6 +2727,10 @@ static int gpmi_pm_resume(struct device *dev)
return ret;
}
/* Set flag to get timing setup restored for next exec_op */
if (this->hw.clk_rate)
this->hw.must_apply_timings = true;
/* re-init the BCH registers */
ret = bch_set_geometry(this);
if (ret) {