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f0f35fdac1
This reverts commit d7f21940bc.
Winbond W25Q256FV and W25Q256JV both uses 0xef4019 as JEDEC ID,
but only the latter has proper 4B_OPCODES support.
W25Q256FV has all 4B read instructions but it lacks a 4B page program
instruction, causing the entire flash to be read-only.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
36 lines
1.2 KiB
Diff
36 lines
1.2 KiB
Diff
From: Matthias Schiffer <mschiffer@universe-factory.net>
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Date: Tue, 9 Jan 2018 20:41:48 +0100
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Subject: [PATCH] Revert "mtd: spi-nor: fix Spansion regressions (aliased with
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Winbond)"
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This reverts commit 67b9bcd36906e12a15ffec19463afbbd6a41660e.
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The underlying issue breaking Spansion flash has been fixed with "mtd: spi-nor:
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wait until lock/unlock operations are ready" and "mtd: spi-nor: wait for SR_WIP
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to clear on initial unlock", so we can support unlocking for Winbond flash
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again.
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Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
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---
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drivers/mtd/spi-nor/spi-nor.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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--- a/drivers/mtd/spi-nor/spi-nor.c
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+++ b/drivers/mtd/spi-nor/spi-nor.c
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@@ -4397,6 +4397,7 @@ static void st_micron_set_default_init(s
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static void winbond_set_default_init(struct spi_nor *nor)
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{
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+ nor->flags |= SNOR_F_HAS_LOCK;
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nor->params.set_4byte = winbond_set_4byte;
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}
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@@ -4886,6 +4887,7 @@ int spi_nor_scan(struct spi_nor *nor, co
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JEDEC_MFR(nor->info) == SNOR_MFR_INTEL ||
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JEDEC_MFR(nor->info) == SNOR_MFR_MACRONIX ||
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JEDEC_MFR(nor->info) == SNOR_MFR_SST ||
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+ JEDEC_MFR(nor->info) == SNOR_MFR_WINBOND ||
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nor->info->flags & SPI_NOR_HAS_LOCK)
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nor->clear_sr_bp = spi_nor_clear_sr_bp;
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