mtd: spi-nor: Enable QE bit for ISSI flash

Enable QE bit for ISSI flash chips.

QE enablement logic is similar to what Macronix
has, so reuse the existing code itself.

Cc: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index 3bf8ddfb9df00257f485fa187d632137dfdfcb1c..e840c60f275ee573cacd9ac82908d48f6570ab74 100644 (file)
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -325,6 +325,7 @@ static int set_4byte(struct spi_nor *nor, const struct flash_info *info,
        case SNOR_MFR_MICRON:
                /* Some Micron need WREN command; all will accept it */
                need_wren = true;
+       case SNOR_MFR_ISSI:
        case SNOR_MFR_MACRONIX:
        case SNOR_MFR_WINBOND:
                if (need_wren)

diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index ec144a08d8f822752556b484489a07b08771e0d4..233fdc341a782128d995616f197269497509e160 100644 (file)
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -22,6 +22,7 @@
 #define SNOR_MFR_INTEL         CFI_MFR_INTEL
 #define SNOR_MFR_ST            CFI_MFR_ST /* ST Micro <--> Micron */
 #define SNOR_MFR_MICRON                CFI_MFR_MICRON /* ST Micro <--> Micron */
+#define SNOR_MFR_ISSI          CFI_MFR_PMC
 #define SNOR_MFR_MACRONIX      CFI_MFR_MACRONIX
 #define SNOR_MFR_SPANSION      CFI_MFR_AMD
 #define SNOR_MFR_SST           CFI_MFR_SST