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mtd: spi-nor: spansion: Fixup params->set_4byte_addr_mode for SEMPER

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Infineon SEMPER flash family does not support E9h opcode as Exit 4-byte
mode (EX4B). Therefore, params->set_4byte_addr_mode is not determined by
BFPT parse. Fixup it up by introducing vendor specific EX4B opcode (B8h)
and function.

Fixes: c87c9b11c5 ("mtd: spi-nor: spansion: Determine current address mode")
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Acked-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Acked-by: Pratyush Yadav <pratyush@kernel.org>
Signed-off-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20250612074427.22263-1-Takahiro.Kuwano@infineon.com
This commit is contained in:
Takahiro Kuwano 2025-06-12 16:44:27 +09:00 • committed by Pratyush Yadav
parent d8b73ce1c5
commit a45ab839f5
1 changed files with 31 additions and 0 deletions
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31
drivers/mtd/spi-nor/spansion.c
View file

@ -17,6 +17,7 @@
#define SPINOR_OP_CLSR 0x30 /* Clear status register 1 */
#define SPINOR_OP_CLPEF 0x82 /* Clear program/erase failure flags */
#define SPINOR_OP_CYPRESS_EX4B 0xB8 /* Exit 4-byte address mode */
#define SPINOR_OP_CYPRESS_DIE_ERASE 0x61 /* Chip (die) erase */
#define SPINOR_OP_RD_ANY_REG 0x65 /* Read any register */
#define SPINOR_OP_WR_ANY_REG 0x71 /* Write any register */
@ -58,6 +59,13 @@
SPI_MEM_OP_DUMMY(ndummy, 0), \
SPI_MEM_OP_DATA_IN(1, buf, 0))
#define CYPRESS_NOR_EN4B_EX4B_OP(enable) \
SPI_MEM_OP(SPI_MEM_OP_CMD(enable ? SPINOR_OP_EN4B : \
SPINOR_OP_CYPRESS_EX4B, 0), \
SPI_MEM_OP_NO_ADDR, \
SPI_MEM_OP_NO_DUMMY, \
SPI_MEM_OP_NO_DATA)
#define SPANSION_OP(opcode) \
SPI_MEM_OP(SPI_MEM_OP_CMD(opcode, 0), \
SPI_MEM_OP_NO_ADDR, \
@ -356,6 +364,20 @@ static int cypress_nor_quad_enable_volatile(struct spi_nor *nor)
return 0;
}
static int cypress_nor_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
{
int ret;
struct spi_mem_op op = CYPRESS_NOR_EN4B_EX4B_OP(enable);
spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);
ret = spi_mem_exec_op(nor->spimem, &op);
if (ret)
dev_dbg(nor->dev, "error %d setting 4-byte mode\n", ret);
return ret;
}
/**
* cypress_nor_determine_addr_mode_by_sr1() - Determine current address mode
* (3 or 4-byte) by querying status
@ -526,6 +548,9 @@ s25fs256t_post_bfpt_fixup(struct spi_nor *nor,
struct spi_mem_op op;
int ret;
/* Assign 4-byte address mode method that is not determined in BFPT */
nor->params->set_4byte_addr_mode = cypress_nor_set_4byte_addr_mode;
ret = cypress_nor_set_addr_mode_nbytes(nor);
if (ret)
return ret;
@ -591,6 +616,9 @@ s25hx_t_post_bfpt_fixup(struct spi_nor *nor,
{
int ret;
/* Assign 4-byte address mode method that is not determined in BFPT */
nor->params->set_4byte_addr_mode = cypress_nor_set_4byte_addr_mode;
ret = cypress_nor_set_addr_mode_nbytes(nor);
if (ret)
return ret;
@ -718,6 +746,9 @@ static int s28hx_t_post_bfpt_fixup(struct spi_nor *nor,
const struct sfdp_parameter_header *bfpt_header,
const struct sfdp_bfpt *bfpt)
{
/* Assign 4-byte address mode method that is not determined in BFPT */
nor->params->set_4byte_addr_mode = cypress_nor_set_4byte_addr_mode;
return cypress_nor_set_addr_mode_nbytes(nor);
}