linux-kernel - [PATCH 1/2] mtd: nand: timings: Fix tADL

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Date:	Tue, 14 Jun 2016 16:21:06 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-mtd@...ts.infradead.org,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Richard Weinberger <richard@....at>
Cc:	linux-kernel@...r.kernel.org,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>
Subject: [PATCH 1/2] mtd: nand: timings: Fix tADL_min for ONFI 4.0 chips

ONFI 4.0 spec defines different values for the tADL_min timing.
Since we don't want to have different timings depending on the ONFI
version, we just set tADL_min to the maximum value (the one specified
in the ONFI 4.0 spec).

Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
---
 drivers/mtd/nand/nand_timings.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c
index e81470a..c0941d5 100644
--- a/drivers/mtd/nand/nand_timings.c
+++ b/drivers/mtd/nand/nand_timings.c
@@ -16,7 +16,7 @@
 static const struct nand_sdr_timings onfi_sdr_timings[] = {
 	/* Mode 0 */
 	{
-		.tADL_min = 200000,
+		.tADL_min = 400000,
 		.tALH_min = 20000,
 		.tALS_min = 50000,
 		.tAR_min = 25000,
@@ -53,7 +53,7 @@ static const struct nand_sdr_timings onfi_sdr_timings[] = {
 	},
 	/* Mode 1 */
 	{
-		.tADL_min = 100000,
+		.tADL_min = 400000,
 		.tALH_min = 10000,
 		.tALS_min = 25000,
 		.tAR_min = 10000,
@@ -90,7 +90,7 @@ static const struct nand_sdr_timings onfi_sdr_timings[] = {
 	},
 	/* Mode 2 */
 	{
-		.tADL_min = 100000,
+		.tADL_min = 400000,
 		.tALH_min = 10000,
 		.tALS_min = 15000,
 		.tAR_min = 10000,
@@ -127,7 +127,7 @@ static const struct nand_sdr_timings onfi_sdr_timings[] = {
 	},
 	/* Mode 3 */
 	{
-		.tADL_min = 100000,
+		.tADL_min = 400000,
 		.tALH_min = 5000,
 		.tALS_min = 10000,
 		.tAR_min = 10000,
@@ -164,7 +164,7 @@ static const struct nand_sdr_timings onfi_sdr_timings[] = {
 	},
 	/* Mode 4 */
 	{
-		.tADL_min = 70000,
+		.tADL_min = 400000,
 		.tALH_min = 5000,
 		.tALS_min = 10000,
 		.tAR_min = 10000,
@@ -201,7 +201,7 @@ static const struct nand_sdr_timings onfi_sdr_timings[] = {
 	},
 	/* Mode 5 */
 	{
-		.tADL_min = 70000,
+		.tADL_min = 400000,
 		.tALH_min = 5000,
 		.tALS_min = 10000,
 		.tAR_min = 10000,
-- 
2.7.4