2022-12-01 19:14:46

by Nathan Barrett-Morrison

Subject: [PATCH 0/3] mtd: spi-nor: Extend SFDP to support additional octal modes as per latest JEDEC standard

In the latest JEDEC standard (JESD216F), there are now bitfields in the
4 byte address instruction table for 1S-1S-8S and 1S-8S-8S modes

This patchset adds support for checking the 4BAIT for these modes,
along with additional NO_SFDP_FLAGS to support enabling these new modes

Nathan Barrett-Morrison (3):
mtd: spi-nor: Extend SFDP 4byte address instruction lookup table with
new octal modes as per JEDEC JESD216F
mtd: spi-nor: Add additional octal-mode flags to be checked during
SFDP
mtd: spi-nor: Add support for IS25LX256 operating in 1S-1S-8S mode

drivers/mtd/spi-nor/core.c | 21 ++++++++++++++++++++-
drivers/mtd/spi-nor/core.h | 9 ++++++---
drivers/mtd/spi-nor/issi.c | 3 +++
drivers/mtd/spi-nor/sfdp.c | 5 +++++
4 files changed, 34 insertions(+), 4 deletions(-)

--
2.30.2

2022-12-01 19:21:39

by Nathan Barrett-Morrison

Subject: [PATCH 3/3] mtd: spi-nor: Add support for IS25LX256 operating in 1S-1S-8S mode

This adds the IS25LX256 chip into the ISSI flash_info parts table

Signed-off-by: Nathan Barrett-Morrison <[email protected]>
---
drivers/mtd/spi-nor/issi.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/spi-nor/issi.c b/drivers/mtd/spi-nor/issi.c
index 89a66a19d754..b4412a9afc4e 100644
--- a/drivers/mtd/spi-nor/issi.c
+++ b/drivers/mtd/spi-nor/issi.c
@@ -74,6 +74,9 @@ static const struct flash_info issi_nor_parts[] = {
NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
.fixups = &is25lp256_fixups },
+ { "is25lx256", INFO(0x9d5a19, 0, 128 * 1024, 256)
+ NO_SFDP_FLAGS(SECT_4K | SPI_NOR_4B_OPCODES |
+ SPI_NOR_OCTAL_PP | SPI_NOR_OCTAL_READ) },

/* PMC */
{ "pm25lv512", INFO(0, 0, 32 * 1024, 2)
--
2.30.2