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From: Apurva Nandan <a-nandan@ti.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	Mark Brown <broonie@kernel.org>,
	Patrice Chotard <patrice.chotard@foss.st.com>,
	Boris Brezillon <boris.brezillon@collabora.com>,
	<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	<linux-spi@vger.kernel.org>
Cc: Apurva Nandan <a-nandan@ti.com>, Pratyush Yadav <p.yadav@ti.com>
Subject: [PATCH 08/13] mtd: spinand: Reject 8D-8D-8D op_templates if octal_dtr_enale() is missing in manufacturer_op
Date: Tue, 13 Jul 2021 13:05:33 +0000	[thread overview]
Message-ID: <20210713130538.646-9-a-nandan@ti.com> (raw)
In-Reply-To: <20210713130538.646-1-a-nandan@ti.com>

The SPI NAND core doesn't know how to switch the flash to Octal DTR
mode (i.e. which operations to perform). If the manufacturer hasn't
implemented the octal_dtr_enable() manufacturer_op, the SPI NAND core
wouldn't be able to switch to 8D-8D-8D mode and will also not be able
to run in 1S-1S-1S mode due to already selected 8D-8D-8D read/write
cache op_templates.

So, avoid choosing a Octal DTR SPI op_template for read_cache,
write_cache and update_cache operations, if the manufacturer_op
octal_dtr_enable() is missing.

Signed-off-by: Apurva Nandan <a-nandan@ti.com>
---
 drivers/mtd/nand/spi/core.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index 19d8affac058..8711e887b795 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -1028,6 +1028,8 @@ static int spinand_manufacturer_match(struct spinand_device *spinand,
 		if (id[0] != manufacturer->id)
 			continue;
 
+		spinand->manufacturer = manufacturer;
+
 		ret = spinand_match_and_init(spinand,
 					     manufacturer->chips,
 					     manufacturer->nchips,
@@ -1035,7 +1037,6 @@ static int spinand_manufacturer_match(struct spinand_device *spinand,
 		if (ret < 0)
 			continue;
 
-		spinand->manufacturer = manufacturer;
 		return 0;
 	}
 	return -ENOTSUPP;
@@ -1097,6 +1098,10 @@ spinand_select_op_variant(struct spinand_device *spinand,
 		unsigned int nbytes;
 		int ret;
 
+		if (spinand_op_is_octal_dtr(&op) &&
+		    !spinand->manufacturer->ops->octal_dtr_enable)
+			continue;
+
 		nbytes = nanddev_per_page_oobsize(nand) +
 			 nanddev_page_size(nand);
 
-- 
2.17.1


  parent reply	other threads:[~2021-07-13 13:06 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-13 13:05 [PATCH 00/13] mtd: spinand: Add Octal DTR SPI (8D-8D-8D) mode support Apurva Nandan
2021-07-13 13:05 ` [PATCH 01/13] spi: spi-mem: Add DTR templates for cmd, address, dummy and data phase Apurva Nandan
2021-07-14 17:06   ` Mark Brown
2021-08-23  7:57   ` Boris Brezillon
2021-07-13 13:05 ` [PATCH 02/13] mtd: spinand: Add enum spinand_proto to indicate current SPI IO mode Apurva Nandan
2021-07-13 13:05 ` [PATCH 03/13] mtd: spinand: Setup spi_mem_op for the SPI IO protocol using reg_proto Apurva Nandan
2021-08-06 18:30   ` Miquel Raynal
2021-08-20  9:52     ` Apurva Nandan
2021-08-20 12:08       ` Miquel Raynal
2021-08-23  7:11         ` Boris Brezillon
2021-08-23  7:24           ` Miquel Raynal
2021-07-13 13:05 ` [PATCH 04/13] mtd: spinand: Fix odd byte addr and data phase in read/write reg op and write VCR op for Octal DTR mode Apurva Nandan
2021-08-06 18:43   ` Miquel Raynal
2021-08-20 10:27     ` Apurva Nandan
2021-08-20 12:06       ` Miquel Raynal
2021-07-13 13:05 ` [PATCH 05/13] mtd: spinand: Add adjust_op() in manufacturer_ops to modify the ops for manufacturer specific changes Apurva Nandan
2021-07-13 13:05 ` [PATCH 06/13] mtd: spinand: Add macros for Octal DTR page read and write operations Apurva Nandan
2021-08-06 18:54   ` Miquel Raynal
2021-08-20 10:35     ` Apurva Nandan
2021-07-13 13:05 ` [PATCH 07/13] mtd: spinand: Allow enabling Octal DTR mode in the core Apurva Nandan
2021-08-06 18:58   ` Miquel Raynal
2021-08-20 10:41     ` Apurva Nandan
2021-07-13 13:05 ` Apurva Nandan [this message]
2021-08-06 19:01   ` [PATCH 08/13] mtd: spinand: Reject 8D-8D-8D op_templates if octal_dtr_enale() is missing in manufacturer_op Miquel Raynal
2021-08-20 11:26     ` Apurva Nandan
2021-08-20 12:14       ` Miquel Raynal
2021-08-20 13:54         ` Apurva Nandan
2021-08-20 14:38           ` Miquel Raynal
2021-08-20 15:53             ` Apurva Nandan
2021-07-13 13:05 ` [PATCH 09/13] mtd: spinand: Add support for write volatile configuration register op Apurva Nandan
2021-08-06 19:05   ` Miquel Raynal
2021-08-20 11:30     ` Apurva Nandan
2021-07-13 13:05 ` [PATCH 10/13] mtd: spinand: Add octal_dtr_enable() for Winbond manufacturer_ops Apurva Nandan
2021-08-06 19:06   ` Miquel Raynal
2021-08-20 11:31     ` Apurva Nandan
2021-07-13 13:05 ` [PATCH 11/13] mtd: spinand: Add support for Power-on-Reset (PoR) instruction Apurva Nandan
2021-08-06 19:08   ` Miquel Raynal
2021-08-20 11:39     ` Apurva Nandan
2021-08-20 12:18       ` Miquel Raynal
2021-08-20 13:41         ` Apurva Nandan
2021-08-20 14:17           ` Miquel Raynal
2021-08-20 15:56             ` Apurva Nandan
2021-07-13 13:05 ` [PATCH 12/13] mtd: spinand: Perform Power-on-Reset when runtime_pm suspend is issued Apurva Nandan
2021-08-06 19:12   ` Miquel Raynal
2021-08-20 11:45     ` Apurva Nandan
2021-07-13 13:05 ` [PATCH 13/13] mtd: spinand: Add support for Winbond W35N01JW SPI NAND flash Apurva Nandan
2021-08-06 19:14   ` Miquel Raynal
2021-08-20 11:51     ` Apurva Nandan
2021-08-20 12:02       ` Miquel Raynal
2021-08-20 13:14         ` Apurva Nandan
2021-07-20 16:53 ` [PATCH 00/13] mtd: spinand: Add Octal DTR SPI (8D-8D-8D) mode support Nandan, Apurva

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