linux-kernel - [PATCH 4.6 143/203] memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing

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Message-Id: <20160725203435.220347923@linuxfoundation.org>
Date:	Mon, 25 Jul 2016 13:55:58 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	"Ocquidant, Sebastien" <sebastienocquidant@...on.com>,
	Roger Quadros <rogerq@...com>
Subject: [PATCH 4.6 143/203] memory: omap-gpmc: Fix omap gpmc EXTRADELAY timing

4.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ocquidant, Sebastien <sebastienocquidant@...on.com>

commit 8f50b8e57442d28e41bb736c173d8a2490549a82 upstream.

In the omap gpmc driver it can be noticed that GPMC_CONFIG4_OEEXTRADELAY
is overwritten by the WEEXTRADELAY value from the device tree and
GPMC_CONFIG4_WEEXTRADELAY is not updated by the value from the device
tree.

As a consequence, the memory accesses cannot be configured properly when
the extra delay are needed for OE and WE.

Fix the update of GPMC_CONFIG4_WEEXTRADELAY with the value from the
device tree file and prevents GPMC_CONFIG4_OEXTRADELAY
being overwritten by the WEXTRADELAY value from the device tree.

Signed-off-by: Ocquidant, Sebastien <sebastienocquidant@...on.com>
Signed-off-by: Roger Quadros <rogerq@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/memory/omap-gpmc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -394,7 +394,7 @@ static void gpmc_cs_bool_timings(int cs,
 	gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG4,
 			   GPMC_CONFIG4_OEEXTRADELAY, p->oe_extra_delay);
 	gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG4,
-			   GPMC_CONFIG4_OEEXTRADELAY, p->we_extra_delay);
+			   GPMC_CONFIG4_WEEXTRADELAY, p->we_extra_delay);
 	gpmc_cs_modify_reg(cs, GPMC_CS_CONFIG6,
 			   GPMC_CONFIG6_CYCLE2CYCLESAMECSEN,
 			   p->cycle2cyclesamecsen);