Add support for Octal flash devices. Octal flash devices use 8 IO lines for data transfer. Currently only 1-1-8 Octal Read mode is supported.
Signed-off-by: Vignesh Raghavendra vigneshr@ti.com --- drivers/mtd/spi/sf_internal.h | 3 ++- drivers/mtd/spi/spi-nor-core.c | 20 +++++++++++++++++++- drivers/spi/spi-mem.c | 6 ++++++ drivers/spi/spi-uclass.c | 6 ++++++ include/linux/mtd/spi-nor.h | 8 ++++++++ include/spi.h | 2 ++ 6 files changed, 43 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h index 5c643034c691..940b2e4c9e00 100644 --- a/drivers/mtd/spi/sf_internal.h +++ b/drivers/mtd/spi/sf_internal.h @@ -37,7 +37,7 @@ struct flash_info { u16 page_size; u16 addr_width;
- u16 flags; + u32 flags; #define SECT_4K BIT(0) /* SPINOR_OP_BE_4K works uniformly */ #define SPI_NOR_NO_ERASE BIT(1) /* No erase command needed */ #define SST_WRITE BIT(2) /* use SST byte programming */ @@ -66,6 +66,7 @@ struct flash_info { #define SPI_NOR_SKIP_SFDP BIT(13) /* Skip parsing of SFDP tables */ #define USE_CLSR BIT(14) /* use CLSR command */ #define SPI_NOR_HAS_SST26LOCK BIT(15) /* Flash supports lock/unlock via BPR */ +#define SPI_NOR_OCTAL_READ BIT(16) /* Flash supports Octal Read */ };
extern const struct flash_info spi_nor_ids[]; diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index 5a8c08425566..9b726be5d22d 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -251,6 +251,8 @@ static u8 spi_nor_convert_3to4_read(u8 opcode) { SPINOR_OP_READ_1_2_2, SPINOR_OP_READ_1_2_2_4B }, { SPINOR_OP_READ_1_1_4, SPINOR_OP_READ_1_1_4_4B }, { SPINOR_OP_READ_1_4_4, SPINOR_OP_READ_1_4_4_4B }, + { SPINOR_OP_READ_1_1_8, SPINOR_OP_READ_1_1_8_4B }, + { SPINOR_OP_READ_1_8_8, SPINOR_OP_READ_1_8_8_4B },
{ SPINOR_OP_READ_1_1_1_DTR, SPINOR_OP_READ_1_1_1_DTR_4B }, { SPINOR_OP_READ_1_2_2_DTR, SPINOR_OP_READ_1_2_2_DTR_4B }, @@ -267,6 +269,8 @@ static u8 spi_nor_convert_3to4_program(u8 opcode) { SPINOR_OP_PP, SPINOR_OP_PP_4B }, { SPINOR_OP_PP_1_1_4, SPINOR_OP_PP_1_1_4_4B }, { SPINOR_OP_PP_1_4_4, SPINOR_OP_PP_1_4_4_4B }, + { SPINOR_OP_PP_1_1_8, SPINOR_OP_PP_1_1_8_4B }, + { SPINOR_OP_PP_1_8_8, SPINOR_OP_PP_1_8_8_4B }, };
return spi_nor_convert_opcode(opcode, spi_nor_3to4_program, @@ -2121,6 +2125,13 @@ static int spi_nor_init_params(struct spi_nor *nor, SNOR_PROTO_1_1_4); }
+ if (info->flags & SPI_NOR_OCTAL_READ) { + params->hwcaps.mask |= SNOR_HWCAPS_READ_1_1_8; + spi_nor_set_read_settings(¶ms->reads[SNOR_CMD_READ_1_1_8], + 0, 8, SPINOR_OP_READ_1_1_8, + SNOR_PROTO_1_1_8); + } + /* Page Program settings. */ params->hwcaps.mask |= SNOR_HWCAPS_PP; spi_nor_set_pp_settings(¶ms->page_programs[SNOR_CMD_PP], @@ -2428,7 +2439,14 @@ int spi_nor_scan(struct spi_nor *nor) nor->read_reg = spi_nor_read_reg; nor->write_reg = spi_nor_write_reg;
- if (spi->mode & SPI_RX_QUAD) { + if (spi->mode & SPI_RX_OCTAL) { + hwcaps.mask |= SNOR_HWCAPS_READ_1_1_8; + + if (spi->mode & SPI_TX_OCTAL) + hwcaps.mask |= (SNOR_HWCAPS_READ_1_8_8 | + SNOR_HWCAPS_PP_1_1_8 | + SNOR_HWCAPS_PP_1_8_8); + } else if (spi->mode & SPI_RX_QUAD) { hwcaps.mask |= SNOR_HWCAPS_READ_1_1_4;
if (spi->mode & SPI_TX_QUAD) diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 7788ab995344..cc358bd4f7ce 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -123,6 +123,12 @@ static int spi_check_buswidth_req(struct spi_slave *slave, u8 buswidth, bool tx) return 0;
break; + case 8: + if ((tx && (mode & SPI_TX_OCTAL)) || + (!tx && (mode & SPI_RX_OCTAL))) + return 0; + + break;
default: break; diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c index 665611f7e23a..e16e9b4a4e98 100644 --- a/drivers/spi/spi-uclass.c +++ b/drivers/spi/spi-uclass.c @@ -445,6 +445,9 @@ int spi_slave_ofdata_to_platdata(struct udevice *dev, case 4: mode |= SPI_TX_QUAD; break; + case 8: + mode |= SPI_TX_OCTAL; + break; default: warn_non_spl("spi-tx-bus-width %d not supported\n", value); break; @@ -460,6 +463,9 @@ int spi_slave_ofdata_to_platdata(struct udevice *dev, case 4: mode |= SPI_RX_QUAD; break; + case 8: + mode |= SPI_RX_OCTAL; + break; default: warn_non_spl("spi-rx-bus-width %d not supported\n", value); break; diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index f9964a766456..e75e0485bd4f 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -47,9 +47,13 @@ #define SPINOR_OP_READ_1_2_2 0xbb /* Read data bytes (Dual I/O SPI) */ #define SPINOR_OP_READ_1_1_4 0x6b /* Read data bytes (Quad Output SPI) */ #define SPINOR_OP_READ_1_4_4 0xeb /* Read data bytes (Quad I/O SPI) */ +#define SPINOR_OP_READ_1_1_8 0x8b /* Read data bytes (Octal Output SPI) */ +#define SPINOR_OP_READ_1_8_8 0xcb /* Read data bytes (Octal I/O SPI) */ #define SPINOR_OP_PP 0x02 /* Page program (up to 256 bytes) */ #define SPINOR_OP_PP_1_1_4 0x32 /* Quad page program */ #define SPINOR_OP_PP_1_4_4 0x38 /* Quad page program */ +#define SPINOR_OP_PP_1_1_8 0x82 /* Octal page program */ +#define SPINOR_OP_PP_1_8_8 0xc2 /* Octal page program */ #define SPINOR_OP_BE_4K 0x20 /* Erase 4KiB block */ #define SPINOR_OP_BE_4K_PMC 0xd7 /* Erase 4KiB block on PMC chips */ #define SPINOR_OP_BE_32K 0x52 /* Erase 32KiB block */ @@ -70,9 +74,13 @@ #define SPINOR_OP_READ_1_2_2_4B 0xbc /* Read data bytes (Dual I/O SPI) */ #define SPINOR_OP_READ_1_1_4_4B 0x6c /* Read data bytes (Quad Output SPI) */ #define SPINOR_OP_READ_1_4_4_4B 0xec /* Read data bytes (Quad I/O SPI) */ +#define SPINOR_OP_READ_1_1_8_4B 0x7c /* Read data bytes (Octal Output SPI) */ +#define SPINOR_OP_READ_1_8_8_4B 0xcc /* Read data bytes (Octal I/O SPI) */ #define SPINOR_OP_PP_4B 0x12 /* Page program (up to 256 bytes) */ #define SPINOR_OP_PP_1_1_4_4B 0x34 /* Quad page program */ #define SPINOR_OP_PP_1_4_4_4B 0x3e /* Quad page program */ +#define SPINOR_OP_PP_1_1_8_4B 0x84 /* Octal page program */ +#define SPINOR_OP_PP_1_8_8_4B 0x8e /* Octal page program */ #define SPINOR_OP_BE_4K_4B 0x21 /* Erase 4KiB block */ #define SPINOR_OP_BE_32K_4B 0x5c /* Erase 32KiB block */ #define SPINOR_OP_SE_4B 0xdc /* Sector erase (usually 64KiB) */ diff --git a/include/spi.h b/include/spi.h index 6fbb4336ce38..66959a8fe0a8 100644 --- a/include/spi.h +++ b/include/spi.h @@ -30,6 +30,8 @@ #define SPI_RX_SLOW BIT(11) /* receive with 1 wire slow */ #define SPI_RX_DUAL BIT(12) /* receive with 2 wires */ #define SPI_RX_QUAD BIT(13) /* receive with 4 wires */ +#define SPI_TX_OCTAL BIT(14) /* transmit with 8 wires */ +#define SPI_RX_OCTAL BIT(15) /* receive with 8 wires */
/* Header byte that marks the start of the message */ #define SPI_PREAMBLE_END_BYTE 0xec