diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2026-04-10 19:41:03 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2026-04-27 15:08:04 +0200 |
| commit | 5e25407b68f460142539536e31fa20338db6146f (patch) | |
| tree | 6173fede5a77e239e9150e56f8c35c055456f690 /include/linux | |
| parent | e47029b977e747cb3a9174308fd55762cce70147 (diff) | |
mtd: spinand: Add support for packed read data ODTR commands
Some devices stuff address bits in the double byte opcode (in place of
the repeated byte) in order to be able to increase the size of the
devices, without adding extra address bytes.
Create a flag to identify those devices. When the flag is set, use the
"packed" variant for the read data operation.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mtd/spinand.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h index 58abd306ebe3..782984ba3a20 100644 --- a/include/linux/mtd/spinand.h +++ b/include/linux/mtd/spinand.h @@ -290,6 +290,12 @@ SPI_MEM_OP_NO_DUMMY, \ SPI_MEM_OP_NO_DATA) +#define SPINAND_PAGE_READ_PACKED_8D_8D_0_OP(addr) \ + SPI_MEM_OP(SPI_MEM_DTR_OP_PACKED_CMD(0x13, addr >> 16, 8), \ + SPI_MEM_DTR_OP_ADDR(2, addr & 0xffff, 8), \ + SPI_MEM_OP_NO_DUMMY, \ + SPI_MEM_OP_NO_DATA) + #define SPINAND_PAGE_READ_FROM_CACHE_8D_8D_8D_OP(addr, ndummy, buf, len, freq) \ SPI_MEM_OP(SPI_MEM_DTR_OP_RPT_CMD(0x9d, 8), \ SPI_MEM_DTR_OP_ADDR(2, addr, 8), \ @@ -483,6 +489,7 @@ struct spinand_ecc_info { #define SPINAND_HAS_PROG_PLANE_SELECT_BIT BIT(2) #define SPINAND_HAS_READ_PLANE_SELECT_BIT BIT(3) #define SPINAND_NO_RAW_ACCESS BIT(4) +#define SPINAND_ODTR_PACKED_PAGE_READ BIT(5) /** * struct spinand_ondie_ecc_conf - private SPI-NAND on-die ECC engine structure |