linux-kernel - [PATCH 17/28] mtd: spinand: winbond: Register W25N vendor specific operation

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Message-Id: <20251031-winbond-v6-17-rc1-oddr-v1-17-be42de23ebf1@bootlin.com>
Date: Fri, 31 Oct 2025 18:27:01 +0100
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Mark Brown <broonie@...nel.org>, Richard Weinberger <richard@....at>, 
 Vignesh Raghavendra <vigneshr@...com>
Cc: Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Pratyush Yadav <pratyush@...nel.org>, 
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Steam Lin <STLin2@...bond.com>, Santhosh Kumar K <s-k6@...com>, 
 linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-mtd@...ts.infradead.org, Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [PATCH 17/28] mtd: spinand: winbond: Register W25N vendor specific
 operation

Provide the Winbond W25N specific "select target" operation to let the
core verify it is supported by the controller before using it.

Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
---
 drivers/mtd/nand/spi/winbond.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c
index 3003ad7e83ee8f553ec82a0326422916c0ed794c..36053f35ee5e84eb355343443a28d274cf7ea5c3 100644
--- a/drivers/mtd/nand/spi/winbond.c
+++ b/drivers/mtd/nand/spi/winbond.c
@@ -105,6 +105,9 @@ spinand_fill_winbond_write_vcr_op(struct spinand_device *spinand, u8 reg, void *
 		   SPI_MEM_OP_NO_DUMMY,					\
 		   SPI_MEM_OP_DATA_OUT(1, buf, 1))
 
+static SPINAND_OP_VARIANTS(winbond_w25_ops,
+		SPINAND_WINBOND_SELECT_TARGET_1S_0_1S(NULL));
+
 static struct spi_mem_op
 spinand_fill_winbond_select_target_op(struct spinand_device *spinand, void *valptr)
 {
@@ -497,6 +500,7 @@ static const struct spinand_info winbond_spinand_table[] = {
 					      &write_cache_variants,
 					      &update_cache_variants),
 		     0,
+		     SPINAND_INFO_VENDOR_OPS(&winbond_w25_ops),
 		     SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL),
 		     SPINAND_SELECT_TARGET(w25m02gv_select_target)),
 	SPINAND_INFO("W25N02JW", /* high-speed 1.8V */

-- 
2.51.0