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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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49
target/linux/generic/backport-5.10/422-v5.19-mtd-spi-nor-support-eon-en25qh256a.patch Normal file
View File

@ -0,0 +1,49 @@
From 6abef37d16d0c570ef5a149e63762fba2a30804b Mon Sep 17 00:00:00 2001
From: "Leon M. George" <leon@georgemail.eu>
Date: Wed, 30 Mar 2022 16:16:56 +0200
Subject: [PATCH] mtd: spi-nor: support eon en25qh256a variant
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. George <leon@georgemail.eu>
---
drivers/mtd/spi-nor/eon.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/drivers/mtd/spi-nor/eon.c
+++ b/drivers/mtd/spi-nor/eon.c
@@ -8,6 +8,16 @@
#include "core.h"
+static void en25qh256_post_sfdp_fixups(struct spi_nor *nor)
+{
+ if (nor->params->hwcaps.mask & SNOR_HWCAPS_READ_1_1_4)
+ nor->flags |= SNOR_F_4B_OPCODES;
+}
+
+static const struct spi_nor_fixups en25qh256_fixups = {
+ .post_sfdp = en25qh256_post_sfdp_fixups,
+};
+
static const struct flash_info eon_parts[] = {
/* EON -- en25xxx */
{ "en25f32", INFO(0x1c3116, 0, 64 * 1024, 64, SECT_4K) },
@@ -23,7 +33,9 @@ static const struct flash_info eon_parts
{ "en25qh64", INFO(0x1c7017, 0, 64 * 1024, 128,
SECT_4K | SPI_NOR_DUAL_READ) },
{ "en25qh128", INFO(0x1c7018, 0, 64 * 1024, 256, 0) },
- { "en25qh256", INFO(0x1c7019, 0, 64 * 1024, 512, 0) },
+ { "en25qh256", INFO(0x1c7019, 0, 64 * 1024, 512,
+ SPI_NOR_DUAL_READ)
+ .fixups = &en25qh256_fixups },
{ "en25s64", INFO(0x1c3817, 0, 64 * 1024, 128, SECT_4K) },
};

49
target/linux/generic/backport-5.15/422-v5.19-mtd-spi-nor-support-eon-en25qh256a.patch Normal file
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@ -0,0 +1,49 @@
From 6abef37d16d0c570ef5a149e63762fba2a30804b Mon Sep 17 00:00:00 2001
From: "Leon M. George" <leon@georgemail.eu>
Date: Wed, 30 Mar 2022 16:16:56 +0200
Subject: [PATCH] mtd: spi-nor: support eon en25qh256a variant
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. George <leon@georgemail.eu>
---
drivers/mtd/spi-nor/eon.c | 11 +++++++++++
1 file changed, 11 insertions(+)
--- a/drivers/mtd/spi-nor/eon.c
+++ b/drivers/mtd/spi-nor/eon.c
@@ -8,6 +8,16 @@
#include "core.h"
+static void en25qh256_post_sfdp_fixups(struct spi_nor *nor)
+{
+ if (nor->params->hwcaps.mask & SNOR_HWCAPS_READ_1_1_4)
+ nor->flags |= SNOR_F_4B_OPCODES;
+}
+
+static const struct spi_nor_fixups en25qh256_fixups = {
+ .post_sfdp = en25qh256_post_sfdp_fixups,
+};
+
static const struct flash_info eon_parts[] = {
/* EON -- en25xxx */
{ "en25f32", INFO(0x1c3116, 0, 64 * 1024, 64, SECT_4K) },
@@ -23,7 +33,9 @@ static const struct flash_info eon_parts
{ "en25qh64", INFO(0x1c7017, 0, 64 * 1024, 128,
SECT_4K | SPI_NOR_DUAL_READ) },
{ "en25qh128", INFO(0x1c7018, 0, 64 * 1024, 256, 0) },
- { "en25qh256", INFO(0x1c7019, 0, 64 * 1024, 512, 0) },
+ { "en25qh256", INFO(0x1c7019, 0, 64 * 1024, 512,
+ SPI_NOR_DUAL_READ)
+ .fixups = &en25qh256_fixups },
{ "en25s64", INFO(0x1c3817, 0, 64 * 1024, 128, SECT_4K) },
};

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) },

2
target/linux/generic/pending-5.15/476-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-5.15/477-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) },