From Micron, 512MB onwards, flash requires to poll flag status
instead of read status- hence added E_FSR flag on spectific flash parts.
Signed-off-by: Jagannadha Sutradharudu Teki jaganna@xilinx.com --- Changes for v4: - none Changes for v3: - none Changes for v2: - none
drivers/mtd/spi/spi_flash_probe.c | 14 +++++++++----- include/spi_flash.h | 1 + 2 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/mtd/spi/spi_flash_probe.c b/drivers/mtd/spi/spi_flash_probe.c index 9b5a055..c62a1ee 100644 --- a/drivers/mtd/spi/spi_flash_probe.c +++ b/drivers/mtd/spi/spi_flash_probe.c @@ -94,10 +94,10 @@ static const struct spi_flash_params spi_flash_params_table[] = { {"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, SECT_4K}, {"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, SECT_4K}, {"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, SECT_4K}, - {"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, SECT_4K}, - {"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, SECT_4K}, - {"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, SECT_4K}, - {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, SECT_4K}, + {"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, E_FSR | SECT_4K}, + {"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, E_FSR | SECT_4K}, + {"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, E_FSR | SECT_4K}, + {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, E_FSR | SECT_4K}, #endif #ifdef CONFIG_SPI_FLASH_SST /* SST */ {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, SECT_4K | SST_WP}, @@ -187,7 +187,6 @@ struct spi_flash *spi_flash_validate_ids(struct spi_slave *spi, u8 *idcode)
flash->spi = spi; flash->name = params->name; - flash->poll_cmd = CMD_READ_STATUS;
/* Assign spi_flash ops */ flash->write = spi_flash_cmd_write_multi; @@ -215,6 +214,11 @@ struct spi_flash *spi_flash_validate_ids(struct spi_slave *spi, u8 *idcode) flash->erase_size = flash->sector_size; }
+ /* Poll cmd seclection */ + flash->poll_cmd = CMD_READ_STATUS; + if (params->flags & E_FSR) + flash->poll_cmd = CMD_FLAG_STATUS; + /* Flash powers up read-only, so clear BP# bits */ if (((params->jedec >> 16) == SPI_FLASH_CFI_MFR_ATMEL) || ((params->jedec >> 16) == SPI_FLASH_CFI_MFR_MACRONIX) || diff --git a/include/spi_flash.h b/include/spi_flash.h index 387af86..3e60fdc 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -25,6 +25,7 @@ /* SECT flags */ #define SECT_4K (1 << 0) #define SECT_32K (1 << 1) +#define E_FSR (1 << 2)
/* SST specific macros */ #ifdef CONFIG_SPI_FLASH_SST