linux-kernel - [PATCH v2 26/27] mtd: spinand: winbond: Add comment about naming

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Message-Id: <20241224-winbond-6-11-rc1-quad-support-v2-26-ad218dbc406f@bootlin.com>
Date: Tue, 24 Dec 2024 18:06:11 +0100
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Mark Brown <broonie@...nel.org>, Sanjay R Mehta <sanju.mehta@....com>, 
 Serge Semin <fancer.lancer@...il.com>, Han Xu <han.xu@....com>, 
 Conor Dooley <conor.dooley@...rochip.com>, 
 Daire McNamara <daire.mcnamara@...rochip.com>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Haibo Chen <haibo.chen@....com>, Yogesh Gaur <yogeshgaur.83@...il.com>, 
 Heiko Stuebner <heiko@...ech.de>, Michal Simek <michal.simek@....com>, 
 Miquel Raynal <miquel.raynal@...tlin.com>, 
 Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, 
 Jacky Huang <ychuang3@...oton.com>, Shan-Chun Hung <schung@...oton.com>, 
 Chin-Ting Kuo <chin-ting_kuo@...eedtech.com>, 
 Cédric Le Goater <clg@...d.org>, 
 Joel Stanley <joel@....id.au>, Andrew Jeffery <andrew@...econstruct.com.au>, 
 Avi Fishman <avifishman70@...il.com>, Tomer Maimon <tmaimon77@...il.com>, 
 Tali Perry <tali.perry1@...il.com>, Patrick Venture <venture@...gle.com>, 
 Nancy Yuen <yuenn@...gle.com>, Benjamin Fair <benjaminfair@...gle.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Raju Rangoju <Raju.Rangoju@....com>
Cc: Thomas Petazzoni <thomas.petazzoni@...tlin.com>, 
 Steam Lin <stlin2@...bond.com>, linux-spi@...r.kernel.org, 
 linux-kernel@...r.kernel.org, imx@...ts.linux.dev, 
 linux-riscv@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 linux-mediatek@...ts.infradead.org, linux-rockchip@...ts.infradead.org, 
 linux-mtd@...ts.infradead.org, linux-aspeed@...ts.ozlabs.org, 
 openbmc@...ts.ozlabs.org, linux-stm32@...md-mailman.stormreply.com
Subject: [PATCH v2 26/27] mtd: spinand: winbond: Add comment about naming

Make the link between the core macros and the datasheet.

Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
---
 drivers/mtd/nand/spi/winbond.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c
index 97517d495e57a6e9e616ed7e66b4a8e9fc1fe62a..51972ba0f193c7b27ece0296c1590ddfed0ac813 100644
--- a/drivers/mtd/nand/spi/winbond.c
+++ b/drivers/mtd/nand/spi/winbond.c
@@ -18,6 +18,11 @@
 
 #define W25N04KV_STATUS_ECC_5_8_BITFLIPS	(3 << 4)
 
+/*
+ * "X2" in the core is equivalent to "dual output" in the datasheets,
+ * "X4" in the core is equivalent to "quad output" in the datasheets.
+ */
+
 static SPINAND_OP_VARIANTS(read_cache_dtr_variants,
 		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
 		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),

-- 
2.47.0