| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.4 059/222] mtd: rawnand: gpmi: Restore nfc timing setup after suspend/resume | Date | Wed, 22 Jan 2020 10:27:25 +0100 |
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From: Esben Haabendal <esben@geanix.com>
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: ef347c0cfd61 ("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>
--- drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c @@ -2727,6 +2727,10 @@ static int gpmi_pm_resume(struct device 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) {
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