github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-11-07 06:17:02 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

mtd: spi-nor: sfdp: get the 1-1-8 and 1-8-8 page programs from 4BAIT

Browse Source 
Commit af2792abd4 ("mtd: spi-nor: sfdp: get the 1-1-8 and 1-8-8
protocol from SFDP") taught the core to discover octal read support
from BFPT, but the 4-Byte Address Instruction Table parser was never
extended accordingly.

Parse the 1-1-8 and 1-8-8 page program bits of 4BAIT DWORD1 and set the
corresponding 4-byte opcodes, so that octal writes stay available once
the flash switches to the 4-byte address instruction set.

This is in preparation of adding support for the ISSI IS25WX01G, a
1 Gbit octal flash which is beyond the 3-byte address range and
advertises 4-byte 1-1-8 and 1-8-8 page program instructions.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Michael Walle <mwalle@kernel.org>
This commit is contained in:
Nuno Sá 2026-09-14 14:42:01 +01:00 committed by Michael Walle
parent ceedf3193c
commit 68d7115d77
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/mtd/spi-nor/sfdp.c
View File

@ -1088,6 +1088,8 @@ static int spi_nor_parse_4bait(struct spi_nor *nor,
{ SNOR_HWCAPS_PP, BIT(6) },
{ SNOR_HWCAPS_PP_1_1_4, BIT(7) },
{ SNOR_HWCAPS_PP_1_4_4, BIT(8) },
{ SNOR_HWCAPS_PP_1_1_8, BIT(23) },
{ SNOR_HWCAPS_PP_1_8_8, BIT(24) },
};
static const struct sfdp_4bait erases[SNOR_ERASE_TYPE_MAX] = {
{ 0u /* not used */, BIT(9) },
@ -1214,6 +1216,14 @@ static int spi_nor_parse_4bait(struct spi_nor *nor,
spi_nor_set_pp_settings(&params_pp[SNOR_CMD_PP_1_4_4],
SPINOR_OP_PP_1_4_4_4B,
SNOR_PROTO_1_4_4);
if (pp_hwcaps & SNOR_HWCAPS_PP_1_1_8)
spi_nor_set_pp_settings(&params_pp[SNOR_CMD_PP_1_1_8],
SPINOR_OP_PP_1_1_8_4B,
SNOR_PROTO_1_1_8);
if (pp_hwcaps & SNOR_HWCAPS_PP_1_8_8)
spi_nor_set_pp_settings(&params_pp[SNOR_CMD_PP_1_8_8],
SPINOR_OP_PP_1_8_8_4B,
SNOR_PROTO_1_8_8);
for (i = 0; i < SNOR_ERASE_TYPE_MAX; i++) {
if (erase_mask & BIT(i))