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spi: Add support for 4Byte addressing commands

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Thsi patch adds support for 4-byte addressing Read, write
and erase commands.

Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
This commit is contained in:
Siva Durga Prasad Paladugu
2019-04-27 11:59:00 +05:30
committed by Michal Simek
parent c879ab6c71
commit 9ba61fc244
3 changed files with 19 additions and 0 deletions
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3
drivers/mtd/spi/sf_internal.h
View File

@@ -45,10 +45,12 @@ enum spi_nor_option_flags {
#define CMD_ERASE_4K 0x20
#define CMD_ERASE_CHIP 0xc7
#define CMD_ERASE_64K 0xd8
#define CMD_ERASE_64K_4B 0xdc
/* Write commands */
#define CMD_WRITE_STATUS 0x01
#define CMD_PAGE_PROGRAM 0x02
#define CMD_PAGE_PROGRAM_4B 0x12
#define CMD_WRITE_DISABLE 0x04
#define CMD_WRITE_ENABLE 0x06
#define CMD_QUAD_PAGE_PROGRAM 0x32
@@ -64,6 +66,7 @@ enum spi_nor_option_flags {
#define CMD_READ_QUAD_OUTPUT_FAST 0x6b
#define CMD_READ_QUAD_IO_FAST 0xeb
#define CMD_READ_OCTAL_OUTPUT_FAST 0x8B
#define CMD_READ_OCTAL_OUTPUT_FAST_4B 0x7C
#define CMD_READ_ID 0x9f
#define CMD_READ_STATUS 0x05
#define CMD_READ_STATUS1 0x35

6
drivers/mtd/spi/spi_flash.c
View File

@@ -1698,6 +1698,12 @@ int spi_flash_scan(struct spi_flash *flash)
flash->write_cmd = CMD_PAGE_PROGRAM;
}
if (spi->mode & SPI_RX_OCTAL && info->flags & RD_OCTAL &&
flash->spi->bytemode) {
flash->read_cmd = CMD_READ_OCTAL_OUTPUT_FAST_4B;
flash->write_cmd = CMD_PAGE_PROGRAM_4B;
flash->erase_cmd = CMD_ERASE_64K_4B;
}
/* Set the quad enable bit - only for quad commands */
if ((flash->read_cmd == CMD_READ_QUAD_OUTPUT_FAST) ||

10
drivers/spi/cadence_qspi.c
View File

@@ -150,6 +150,15 @@ static int cadence_spi_set_speed(struct udevice *bus, uint hz)
return 0;
}
static int cadence_spi_child_pre_probe(struct udevice *bus)
{
struct spi_slave *slave = dev_get_parent_priv(bus);
slave->bytemode = SPI_4BYTE_MODE;
return 0;
}
static int cadence_spi_probe(struct udevice *bus)
{
struct cadence_spi_platdata *plat = bus->platdata;
@@ -345,4 +354,5 @@ U_BOOT_DRIVER(cadence_spi) = {
.platdata_auto_alloc_size = sizeof(struct cadence_spi_platdata),
.priv_auto_alloc_size = sizeof(struct cadence_spi_priv),
.probe = cadence_spi_probe,
.child_pre_probe = cadence_spi_child_pre_probe,
};