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Revert "generic: 5.4: Add 4B_OPCODES flag to w25q256"

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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>
This commit is contained in:
Chuanhong Guo
2020-04-04 21:23:50 +08:00
parent d24e43a7f6
commit f0f35fdac1
6 changed files with 8 additions and 35 deletions
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2
target/linux/generic/pending-5.4/465-m25p80-mx-disable-software-protection.patch
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@@ -8,7 +8,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -4886,6 +4886,7 @@ int spi_nor_scan(struct spi_nor *nor, co
@@ -4884,6 +4884,7 @@ int spi_nor_scan(struct spi_nor *nor, co
*/
if (JEDEC_MFR(nor->info) == SNOR_MFR_ATMEL ||
JEDEC_MFR(nor->info) == SNOR_MFR_INTEL ||