>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 <jaga...@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
--
1.8.3
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