[PATCH] mtd: spi-nor-core: Fixup SNOR_F_IO_MODE_EN_VOLATILE for MT35X

[Prasanth Babu Mantena]

From: Vaishnav Achath <vaishnav.a at ti.com>

MT35XU512ABA has only BFPT and 4-Byte Address Instruction Table
in  SFDP. commit bebdc237507c ("mtd: spi-nor: Parse SFDP SCCR Map")
added checks in spi_nor_octal_dtr_enable() to bail out if the 22nd DWORD
in SCCR does not indicate DTR Octal Mode Enable, since MT35XU512ABA device
supports octal DTR mode, add this property in SFDP fixup.

Signed-off-by: Vaishnav Achath <vaishnav.a at ti.com>
Signed-off-by: Prasanth Babu Mantena <p-mantena at ti.com>
---

Test results : https://gist.github.com/PrasanthBabuMantena/678cbd7a230a4e2d19e22d20dfeb1235

 drivers/mtd/spi/spi-nor-core.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index ec841fb13bd..6364d91fac0 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -4109,6 +4109,12 @@ static void mt35xu512aba_post_sfdp_fixup(struct spi_nor *nor,
 	params->rdsr_dummy = 8;
 	params->rdsr_addr_nbytes = 0;
 
+	/*
+	 * SCCR Map 22nd DWORD does not indicate DTR Octal Mode Enable
+	 * for MT35XU512ABA but is actually supported by device.
+	 */
+	nor->flags |= SNOR_F_IO_MODE_EN_VOLATILE;
+
 	/*
 	 * The BFPT quad enable field is set to a reserved value so the quad
 	 * enable function is ignored by spi_nor_parse_bfpt(). Make sure we
-- 
2.34.1