Hello,
Attached is a patch to switch a few more chips to AAI write. A comment
is added to two entries due to the datasheets claiming AAI support but
via a different opcode. I was able to test programming on one chip and
the write time was more than halved.
Signed-off-by: Joshua Roys <[email protected]>
Josh
>From ae945e913f11c7c9c30036f767655ee1cc8f46da Mon Sep 17 00:00:00 2001
From: Joshua Roys <[email protected]>
Date: Wed, 6 Oct 2010 16:27:54 -0400
Subject: [PATCH] Switch to AAI for some more SST chips
Tested on a SST25VF080B. Write time (w/erase) went from 46s to 21s.
Use AAI:
SST25VF016B
SST25VF040B{,.REMS}
SST25VF080B
Datasheets say AAI is supported, but via a different opcode:
SST25VF040.REMS
SST25LF040A.RES
Signed-off-by: Joshua Roys <[email protected]>
---
flashchips.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/flashchips.c b/flashchips.c
index c0280b3..a02f710 100644
--- a/flashchips.c
+++ b/flashchips.c
@@ -4848,7 +4848,7 @@ struct flashchip flashchips[] = {
},
},
.unlock = spi_disable_blockprotect,
- .write = spi_chip_write_1,
+ .write = spi_aai_write,
.read = spi_chip_read,
},
@@ -4947,7 +4947,7 @@ struct flashchip flashchips[] = {
},
},
.unlock = spi_disable_blockprotect,
- .write = spi_chip_write_1,
+ .write = spi_chip_write_1, /* datasheet says AAI using
0xAF ? */
.read = spi_chip_read,
},
@@ -4982,7 +4982,7 @@ struct flashchip flashchips[] = {
},
},
.unlock = spi_disable_blockprotect,
- .write = spi_chip_write_1,
+ .write = spi_aai_write,
.read = spi_chip_read,
},
@@ -5011,7 +5011,7 @@ struct flashchip flashchips[] = {
},
},
.unlock = spi_disable_blockprotect,
- .write = spi_chip_write_1,
+ .write = spi_chip_write_1, /* datasheet says AAI using
0xAF ? */
.read = spi_chip_read,
},
@@ -5046,7 +5046,7 @@ struct flashchip flashchips[] = {
},
},
.unlock = spi_disable_blockprotect,
- .write = spi_chip_write_1,
+ .write = spi_aai_write,
.read = spi_chip_read,
},
@@ -5081,7 +5081,7 @@ struct flashchip flashchips[] = {
},
},
.unlock = spi_disable_blockprotect,
- .write = spi_chip_write_1,
+ .write = spi_aai_write,
.read = spi_chip_read,
},
--
1.7.2.3
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