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From: Brian Norris <computersforpeace@gmail.com>
To: <linux-mtd@lists.infradead.org>
Cc: Brian Norris <computersforpeace@gmail.com>, Marek Vasut <marex@denx.de>
Subject: [PATCH 10/10] mtd: spi-nor: disable protection for Winbond flash at startup
Date: Tue,  1 Sep 2015 12:57:15 -0700	[thread overview]
Message-ID: <1441137435-52862-11-git-send-email-computersforpeace@gmail.com> (raw)
In-Reply-To: <1441137435-52862-1-git-send-email-computersforpeace@gmail.com>

In case the flash was locked at boot time.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 drivers/mtd/spi-nor/spi-nor.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 6999ef34b597..d69a6c7f11a1 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -1159,13 +1159,14 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, enum read_mode mode)
 	mutex_init(&nor->lock);
 
 	/*
-	 * Atmel, SST and Intel/Numonyx serial nor tend to power
-	 * up with the software protection bits set
+	 * Atmel, SST, Intel/Numonyx, and others serial NOR tend to power up
+	 * with the software protection bits set
 	 */
 
 	if (JEDEC_MFR(info) == SNOR_MFR_ATMEL ||
 	    JEDEC_MFR(info) == SNOR_MFR_INTEL ||
-	    JEDEC_MFR(info) == SNOR_MFR_SST) {
+	    JEDEC_MFR(info) == SNOR_MFR_SST ||
+	    JEDEC_MFR(info) == SNOR_MFR_WINBOND) {
 		write_enable(nor);
 		write_sr(nor, 0);
 	}
-- 
2.5.0.457.gab17608

  parent reply	other threads:[~2015-09-01 19:59 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-01 19:57 [PATCH 00/10] mtd: spi-nor: cleanups + block protection support updates Brian Norris
2015-09-01 19:57 ` [PATCH 01/10] mtd: spi-nor: make implicit <linux/bitops.h> dependency explicit Brian Norris
2015-09-01 19:57 ` [PATCH 02/10] mtd: spi-nor: make bitfield constants more consistent Brian Norris
2015-09-01 19:57 ` [PATCH 03/10] mtd: spi-nor: add SPI NOR manufacturer IDs Brian Norris
2015-09-24 20:17   ` Jagan Teki
2015-09-28  0:46     ` Brian Norris
2015-09-28  9:12       ` Jagan Teki
2015-09-28 23:13         ` Brian Norris
2015-10-01  8:12           ` Jagan Teki
2015-10-01 18:43             ` Brian Norris
2015-09-01 19:57 ` [PATCH 04/10] mtd: spi-nor: use SNOR_MFR_* instead of CFI_MFR_* Brian Norris
2015-09-01 19:57 ` [PATCH 05/10] mtd: spi-nor: fixup kernel-doc for flash lock/unlock function pointers Brian Norris
2015-09-01 19:57 ` [PATCH 06/10] mtd: spi-nor: refactor block protection functions Brian Norris
2015-09-01 19:57 ` [PATCH 07/10] mtd: spi-nor: add mtd_is_locked() support Brian Norris
2015-09-02  9:01   ` Marek Vasut
2015-09-02 20:30     ` Brian Norris
2015-09-03  9:43       ` Marek Vasut
2015-09-03 20:29         ` Brian Norris
2015-10-01  9:00   ` Jagan Teki
2015-10-12 16:49     ` Brian Norris
2015-09-01 19:57 ` [PATCH 08/10] mtd: spi-nor: add DUAL_READ for w25q{32,64}dw Brian Norris
2015-09-01 19:57 ` [PATCH 09/10] mtd: spi-nor: support lock/unlock/is_locked for Winbond Brian Norris
2015-09-01 19:57 ` Brian Norris [this message]
2015-10-14  1:29 ` [PATCH 00/10] mtd: spi-nor: cleanups + block protection support updates Brian Norris

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