linux-kernel - [PATCH 5.15 193/667] mtd: spinand: gigadevice: fix Quad IO for GD5F1GQ5UExxG

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Date:   Tue,  7 Jun 2022 18:57:38 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chuanhong Guo <gch981213@...il.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 193/667] mtd: spinand: gigadevice: fix Quad IO for GD5F1GQ5UExxG

From: Chuanhong Guo <gch981213@...il.com>

[ Upstream commit a4f9dd55c5e1bb951db6f1dee20e62e0103f3438 ]

Read From Cache Quad IO (EBH) uses 2 dummy bytes on this chip according
to page 23 of the datasheet[0].

[0]: https://www.gigadevice.com/datasheet/gd5f1gq5xexxg/

Fixes: 469b99248985 ("mtd: spinand: gigadevice: Support GD5F1GQ5UExxG")
Signed-off-by: Chuanhong Guo <gch981213@...il.com>
Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
Link: https://lore.kernel.org/linux-mtd/20220320100001.247905-2-gch981213@gmail.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/mtd/nand/spi/gigadevice.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
index 1dd1c5898093..da77ab20296e 100644
--- a/drivers/mtd/nand/spi/gigadevice.c
+++ b/drivers/mtd/nand/spi/gigadevice.c
@@ -39,6 +39,14 @@ static SPINAND_OP_VARIANTS(read_cache_variants_f,
 		SPINAND_PAGE_READ_FROM_CACHE_OP_3A(true, 0, 1, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_OP_3A(false, 0, 0, NULL, 0));
 
+static SPINAND_OP_VARIANTS(read_cache_variants_1gq5,
+		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
+
 static SPINAND_OP_VARIANTS(write_cache_variants,
 		SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
 		SPINAND_PROG_LOAD(true, 0, NULL, 0));
@@ -339,7 +347,7 @@ static const struct spinand_info gigadevice_spinand_table[] = {
 		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x51),
 		     NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
 		     NAND_ECCREQ(4, 512),
-		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants_1gq5,
 					      &write_cache_variants,
 					      &update_cache_variants),
 		     SPINAND_HAS_QE_BIT,
-- 
2.35.1