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| author | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-10-02 19:37:43 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-10-07 17:55:45 +0530 |
| commit | 0f6232801cee4f45dbdb0cec45f71172c9b617ca (patch) | |
| tree | 075f1204f284977aebdfbbc46e0c973c8ec48768 | |
| parent | f4f51a8ff894d34eb332f0d11f6c73c7bf509848 (diff) | |
| download | u-boot-imx-0f6232801cee4f45dbdb0cec45f71172c9b617ca.zip u-boot-imx-0f6232801cee4f45dbdb0cec45f71172c9b617ca.tar.gz u-boot-imx-0f6232801cee4f45dbdb0cec45f71172c9b617ca.tar.bz2 | |
sf: probe: Add support for flag status polling
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>
| -rw-r--r-- | drivers/mtd/spi/spi_flash_probe.c | 16 | ||||
| -rw-r--r-- | include/spi_flash.h | 1 |
2 files changed, 12 insertions, 5 deletions
diff --git a/drivers/mtd/spi/spi_flash_probe.c b/drivers/mtd/spi/spi_flash_probe.c index 9c2e115..8ea6915 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 +214,13 @@ 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; +#ifdef CONFIG_SPI_FLASH_STMICRO + if (params->flags & E_FSR) + flash->poll_cmd = CMD_FLAG_STATUS; +#endif + /* Flash powers up read-only, so clear BP# bits */ #if defined(CONFIG_SPI_FLASH_ATMEL) || \ defined(CONFIG_SPI_FLASH_MACRONIX) || \ diff --git a/include/spi_flash.h b/include/spi_flash.h index 0d40e6c..09af55d 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -20,6 +20,7 @@ /* SECT flags */ #define SECT_4K (1 << 1) #define SECT_32K (1 << 2) +#define E_FSR (1 << 3) /* SST specific macros */ #ifdef CONFIG_SPI_FLASH_SST |