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kernel: add patch to support en25qh256a

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The EN25QH256A variant of the EN25QH256 doesn't initialize correctly from SFDP
alone and only accesses memory below 8m (addr_width is 4 but read_opcode takes
only 3 bytes).

Set SNOR_F_4B_OPCODES if the flash chip variant was detected using hwcaps.

The fix submitted upstream uses the PARSE_SFDP initializer that is not
available in the kernel used with Openwrt.

Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>
This commit is contained in:
Leon M. Busch-George
2022-11-12 19:31:32 +01:00
committed by Hauke Mehrtens
parent 4965cbd259
commit ed7c1a504e
6 changed files with 102 additions and 4 deletions
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2
target/linux/generic/pending-5.10/476-mtd-spi-nor-add-eon-en25q128.patch
View File

@@ -8,7 +8,7 @@ Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
--- a/drivers/mtd/spi-nor/eon.c
+++ b/drivers/mtd/spi-nor/eon.c
@@ -15,6 +15,7 @@ static const struct flash_info eon_parts
@@ -25,6 +25,7 @@ static const struct flash_info eon_parts
{ "en25q32b", INFO(0x1c3016, 0, 64 * 1024, 64, 0) },
{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
{ "en25q64", INFO(0x1c3017, 0, 64 * 1024, 128, SECT_4K) },

2
target/linux/generic/pending-5.10/477-mtd-spi-nor-add-eon-en25qx128a.patch
View File

@@ -11,7 +11,7 @@ Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
--- a/drivers/mtd/spi-nor/eon.c
+++ b/drivers/mtd/spi-nor/eon.c
@@ -16,6 +16,7 @@ static const struct flash_info eon_parts
@@ -26,6 +26,7 @@ static const struct flash_info eon_parts
{ "en25p64", INFO(0x1c2017, 0, 64 * 1024, 128, 0) },
{ "en25q64", INFO(0x1c3017, 0, 64 * 1024, 128, SECT_4K) },
{ "en25q128", INFO(0x1c3018, 0, 64 * 1024, 256, SECT_4K) },