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From: Pratyush Yadav <p.yadav@ti.com>
To: Tudor Ambarus <tudor.ambarus@microchip.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>
Cc: Pratyush Yadav <p.yadav@ti.com>
Subject: [PATCH 1/3] mtd: abi: Introduce MTD_NO_MULTI_PASS_WRITE
Date: Mon, 12 Oct 2020 23:34:02 +0530
Message-ID: <20201012180404.6476-2-p.yadav@ti.com> (raw)
In-Reply-To: <20201012180404.6476-1-p.yadav@ti.com>

Some flashes like the Semper S28 family do not support multi-pass page
programming. Introduce the flag MTD_NO_MULTI_PASS_WRITE to allow telling
upper layers this information so they can issue write commands with this
limitation in mind.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---
 include/uapi/mtd/mtd-abi.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/mtd/mtd-abi.h b/include/uapi/mtd/mtd-abi.h
index 65b9db936557..a2cab30adac5 100644
--- a/include/uapi/mtd/mtd-abi.h
+++ b/include/uapi/mtd/mtd-abi.h
@@ -105,6 +105,7 @@ struct mtd_write_req {
 #define MTD_NO_ERASE		0x1000	/* No erase necessary */
 #define MTD_POWERUP_LOCK	0x2000	/* Always locked after reset */
 #define MTD_SLC_ON_MLC_EMULATION 0x4000	/* Emulate SLC behavior on MLC NANDs */
+#define MTD_NO_MULTI_PASS_WRITE	0x8000
 
 /* Some common devices / combinations of capabilities */
 #define MTD_CAP_ROM		0
-- 
2.28.0


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Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-12 18:04 [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it Pratyush Yadav
2020-10-12 18:04 ` Pratyush Yadav [this message]
2020-10-12 18:04 ` [PATCH 2/3] UBI: Do not zero out EC and VID when multi-pass writes are not supported Pratyush Yadav
2020-11-03 11:48   ` Vignesh Raghavendra
2020-11-03 11:59     ` Richard Weinberger
2020-11-03 12:47       ` Pratyush Yadav
2020-10-12 18:04 ` [PATCH 3/3] mtd: spi-nor: core: Introduce SPI_NOR_NO_MULTI_PASS_PP Pratyush Yadav
2020-10-27 11:18 ` [PATCH 0/3] mtd: Make sure UBIFS does not do multi-pass page programming on flashes that don't support it Pratyush Yadav
2020-10-31 21:44   ` Richard Weinberger
2020-11-03 11:35     ` Vignesh Raghavendra
2020-11-03 12:45       ` Pratyush Yadav
2020-11-05 12:21         ` Vignesh Raghavendra
2020-11-05 13:19           ` Pratyush Yadav

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