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authorBoris Brezillon <boris.brezillon@bootlin.com>2019-07-30 11:56:53 +0300
committerTudor Ambarus <tudor.ambarus@microchip.com>2019-08-28 12:40:30 +0300
commitad3bba06b63697fd47525a13d29e8ac0312b0302 (patch)
treece76e7f61efac373a9d726800685885209d4ea01 /drivers/mtd
parent641edddb4f43e8adfd851aea3e48ba35c3b81f4a (diff)
downloadlinux-ad3bba06b63697fd47525a13d29e8ac0312b0302.tar.bz2
mtd: spi-nor: Add the SPI_NOR_XSR_RDY flag
S3AN flashes use a specific opcode to read the status register. We currently use the SPI_S3AN flag to decide whether this specific SR read opcode should be used, but SPI_S3AN is about to disappear, so let's add a new flag. Note that we use the same bit as SPI_S3AN implies SPI_NOR_XSR_RDY and vice versa. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/spi-nor/spi-nor.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 3fea085cd055..0aee1232ad3d 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -211,6 +211,14 @@ struct flash_info {
* bit. Must be used with
* SPI_NOR_HAS_LOCK.
*/
+#define SPI_NOR_XSR_RDY BIT(10) /*
+ * S3AN flashes have specific opcode to
+ * read the status register.
+ * Flags SPI_NOR_XSR_RDY and SPI_S3AN
+ * use the same bit as one implies the
+ * other, but we will get rid of
+ * SPI_S3AN soon.
+ */
#define SPI_S3AN BIT(10) /*
* Xilinx Spartan 3AN In-System Flash
* (MFR cannot be used for probing
@@ -4799,7 +4807,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
* spi_nor_wait_till_ready(). Xilinx S3AN share MFR
* with Atmel spi-nor
*/
- if (info->flags & SPI_S3AN)
+ if (info->flags & SPI_NOR_XSR_RDY)
nor->flags |= SNOR_F_READY_XSR_RDY;
if (info->flags & SPI_NOR_HAS_LOCK)