linux-kernel - [PATCH] mtd: spi-nor: Support Dual and Quad Read on Macronix mx25u25635f

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Date:   Fri, 13 May 2022 11:47:59 +0200
From:   Alexander A Sverdlin <alexander.sverdlin@...ia.com>
To:     linux-mtd@...ts.infradead.org
Cc:     Alexander Sverdlin <alexander.sverdlin@...ia.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <p.yadav@...com>,
        Michael Walle <michael@...le.cc>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mtd: spi-nor: Support Dual and Quad Read on Macronix mx25u25635f

From: Alexander Sverdlin <alexander.sverdlin@...ia.com>

According to datasheet both Dual and Quad Read is supported. The read test
shows x3.8 speed gain.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@...ia.com>
---
 drivers/mtd/spi-nor/macronix.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mtd/spi-nor/macronix.c b/drivers/mtd/spi-nor/macronix.c
index d81a4cb..cad9112 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c
@@ -77,7 +77,7 @@ static const struct flash_info macronix_nor_parts[] = {
 		NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
 		.fixups = &mx25l25635_fixups },
 	{ "mx25u25635f", INFO(0xc22539, 0, 64 * 1024, 512)
-		NO_SFDP_FLAGS(SECT_4K)
+		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
 		FIXUP_FLAGS(SPI_NOR_4B_OPCODES) },
 	{ "mx25u51245g", INFO(0xc2253a, 0, 64 * 1024, 1024)
 		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
-- 
2.10.2