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From: Pratyush Yadav <pratyush@kernel.org>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Tudor Ambarus <tudor.ambarus@linaro.org>,
	 Pratyush Yadav <pratyush@kernel.org>,
	 Michael Walle <mwalle@kernel.org>,
	 Richard Weinberger <richard@nod.at>,
	 Vignesh Raghavendra <vigneshr@ti.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	 Steam Lin <STLin2@winbond.com>,
	 linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/2] mtd: spi-nor: winbond: Add support for flashes with several dies
Date: Mon, 03 Feb 2025 14:28:24 +0000	[thread overview]
Message-ID: <mafs0a5b3je5z.fsf@kernel.org> (raw)
In-Reply-To: <20250110-winbond-6-12-rc1-nor-volatile-bit-v3-0-735363f8cc7d@bootlin.com> (Miquel Raynal's message of "Fri, 10 Jan 2025 15:49:29 +0100")

On Fri, Jan 10 2025, Miquel Raynal wrote:

> Some Winbond devices are made of up smaller stacked dies, like for
> instance W25Q01JV which is a 1G-bit serial flash memory made of two
> 512M-bit dies, and W25Q02JV which is made of four of them. Internally,
> the dies can either be in the active state (only one at a time), the
> others being in the idle state. Problem: there are commands impacting
> all 4 dies, for which we monitor the state of the chip reading the
> status register, but the status register only gives the status of the
> active die. It was observed a possible internal deviation of up to 200us
> between each die when doing similar operations, which can lead to
> races. This series aims at supporting these chips properly.

Applied to spi-nor/next. Thanks!

-- 
Regards,
Pratyush Yadav

______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

WARNING: multiple messages have this Message-ID (diff)
From: Pratyush Yadav <pratyush@kernel.org>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Tudor Ambarus <tudor.ambarus@linaro.org>,
	 Pratyush Yadav <pratyush@kernel.org>,
	 Michael Walle <mwalle@kernel.org>,
	 Richard Weinberger <richard@nod.at>,
	 Vignesh Raghavendra <vigneshr@ti.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	 Steam Lin <STLin2@winbond.com>,
	 linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 0/2] mtd: spi-nor: winbond: Add support for flashes with several dies
Date: Mon, 03 Feb 2025 14:28:24 +0000	[thread overview]
Message-ID: <mafs0a5b3je5z.fsf@kernel.org> (raw)
In-Reply-To: <20250110-winbond-6-12-rc1-nor-volatile-bit-v3-0-735363f8cc7d@bootlin.com> (Miquel Raynal's message of "Fri, 10 Jan 2025 15:49:29 +0100")

On Fri, Jan 10 2025, Miquel Raynal wrote:

> Some Winbond devices are made of up smaller stacked dies, like for
> instance W25Q01JV which is a 1G-bit serial flash memory made of two
> 512M-bit dies, and W25Q02JV which is made of four of them. Internally,
> the dies can either be in the active state (only one at a time), the
> others being in the idle state. Problem: there are commands impacting
> all 4 dies, for which we monitor the state of the chip reading the
> status register, but the status register only gives the status of the
> active die. It was observed a possible internal deviation of up to 200us
> between each die when doing similar operations, which can lead to
> races. This series aims at supporting these chips properly.

Applied to spi-nor/next. Thanks!

-- 
Regards,
Pratyush Yadav

  parent reply	other threads:[~2025-02-03 14:28 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-10 14:49 [PATCH v3 0/2] mtd: spi-nor: winbond: Add support for flashes with several dies Miquel Raynal
2025-01-10 14:49 ` Miquel Raynal
2025-01-10 14:49 ` [PATCH v3 1/2] mtd: spi-nor: winbond: Add support for w25q01jv Miquel Raynal
2025-01-10 14:49   ` Miquel Raynal
2025-01-29 15:39   ` Pratyush Yadav
2025-01-29 15:39     ` Pratyush Yadav
2025-01-10 14:49 ` [PATCH v3 2/2] mtd: spi-nor: winbond: Add support for w25q02jv Miquel Raynal
2025-01-10 14:49   ` Miquel Raynal
2025-01-29 15:39   ` Pratyush Yadav
2025-01-29 15:39     ` Pratyush Yadav
2025-02-03 14:28 ` Pratyush Yadav [this message]
2025-02-03 14:28   ` [PATCH v3 0/2] mtd: spi-nor: winbond: Add support for flashes with several dies Pratyush Yadav

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