3ef988caf3
This patch backports the upstream patch that adds the 4B_OPCODES flag to w25q256 under 4.19 kernel. This is needed for ipq40xx and ramips. Signed-off-by: Robert Marko <robimarko@gmail.com>
38 lines
1.4 KiB
Diff
38 lines
1.4 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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@@ -2739,6 +2739,7 @@ static int spi_nor_init(struct spi_nor *
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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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write_enable(nor);
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write_sr(nor, 0);
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@@ -2875,7 +2876,8 @@ int spi_nor_scan(struct spi_nor *nor, co
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/* NOR protection support for STmicro/Micron chips and similar */
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if (JEDEC_MFR(info) == SNOR_MFR_MICRON ||
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- info->flags & SPI_NOR_HAS_LOCK) {
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+ JEDEC_MFR(info) == SNOR_MFR_WINBOND ||
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+ info->flags & SPI_NOR_HAS_LOCK) {
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nor->flash_lock = stm_lock;
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nor->flash_unlock = stm_unlock;
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nor->flash_is_locked = stm_is_locked;
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