From: Fabio Estevam <festevam@denx.de>
To: Tudor Ambarus <tudor.ambarus@linaro.org>
Cc: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>,
michael@walle.cc, pratyush@kernel.org,
linux-mtd@lists.infradead.org,
linux-arm-kernel@lists.infradead.org, bacem.daassi@infineon.com,
miquel.raynal@bootlin.com, richard@nod.at
Subject: Re: [PATCH v2 2/6] mtd: spi-nor: add erase die (chip) capability
Date: Fri, 03 Nov 2023 11:58:15 -0300 [thread overview]
Message-ID: <f00d72ca1480a9ac6479bbbd149021bd@denx.de> (raw)
In-Reply-To: <5b3b8de5-b2fc-4c8f-a2d7-662748ce9213@linaro.org>
On 03/11/2023 11:37, Tudor Ambarus wrote:
> I confirm I see the same behavior on n25q00 flash.
> Erased 134217728 bytes from address 0x00000000 in flash
>
> real 3m49.082s
> user 0m0.000s
> sys 3m48.485s
>
> I'll continue to investigate this at a best effort rate, expect for
> some
> delays, I'm handling SPI NOR mostly in my spare time. Happy to guide
> you
> though. You may join #mtd irc channel for short questions, see where it
> is in the MAINTAINERS file.
Thanks, Tudor.
Reading the datasheet at:
https://www.micron.com/-/media/client/global/documents/products/data-sheet/nor-flash/serial-nor/mt25q/die-rev-b/mt25q_qlkt_u_01g_bbb_0.pdf
The last entry of Table 49 shows:
512Mb bulk erase time: Typ: 153 s Max: 460 s
512Mb corresponds to the size of one die.
mt25qu01g has two dies so the bulk erase time would be from 306 to 920 s
(5 to 15 minutes!)
It seems that there is not much we can do about this long erase time.
Is my understanding correct?
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http://lists.infradead.org/mailman/listinfo/linux-mtd/
WARNING: multiple messages have this Message-ID (diff)
From: Fabio Estevam <festevam@denx.de>
To: Tudor Ambarus <tudor.ambarus@linaro.org>
Cc: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>,
michael@walle.cc, pratyush@kernel.org,
linux-mtd@lists.infradead.org,
linux-arm-kernel@lists.infradead.org, bacem.daassi@infineon.com,
miquel.raynal@bootlin.com, richard@nod.at
Subject: Re: [PATCH v2 2/6] mtd: spi-nor: add erase die (chip) capability
Date: Fri, 03 Nov 2023 11:58:15 -0300 [thread overview]
Message-ID: <f00d72ca1480a9ac6479bbbd149021bd@denx.de> (raw)
In-Reply-To: <5b3b8de5-b2fc-4c8f-a2d7-662748ce9213@linaro.org>
On 03/11/2023 11:37, Tudor Ambarus wrote:
> I confirm I see the same behavior on n25q00 flash.
> Erased 134217728 bytes from address 0x00000000 in flash
>
> real 3m49.082s
> user 0m0.000s
> sys 3m48.485s
>
> I'll continue to investigate this at a best effort rate, expect for
> some
> delays, I'm handling SPI NOR mostly in my spare time. Happy to guide
> you
> though. You may join #mtd irc channel for short questions, see where it
> is in the MAINTAINERS file.
Thanks, Tudor.
Reading the datasheet at:
https://www.micron.com/-/media/client/global/documents/products/data-sheet/nor-flash/serial-nor/mt25q/die-rev-b/mt25q_qlkt_u_01g_bbb_0.pdf
The last entry of Table 49 shows:
512Mb bulk erase time: Typ: 153 s Max: 460 s
512Mb corresponds to the size of one die.
mt25qu01g has two dies so the bulk erase time would be from 306 to 920 s
(5 to 15 minutes!)
It seems that there is not much we can do about this long erase time.
Is my understanding correct?
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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-11-03 14:58 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-01 14:58 [PATCH v2 0/6] mtd: spi-nor: introduce die erase Tudor Ambarus
2023-11-01 14:58 ` Tudor Ambarus
2023-11-01 14:58 ` [PATCH v2 1/6] mtd: spi-nor: use kernel sized types instead of c99 types Tudor Ambarus
2023-11-01 14:58 ` Tudor Ambarus
2023-11-01 14:58 ` [PATCH v2 2/6] mtd: spi-nor: add erase die (chip) capability Tudor Ambarus
2023-11-01 14:58 ` Tudor Ambarus
2023-11-01 16:04 ` Tudor Ambarus
2023-11-01 16:04 ` Tudor Ambarus
2023-11-01 16:17 ` Fabio Estevam
2023-11-01 16:17 ` Fabio Estevam
2023-11-01 17:27 ` Tudor Ambarus
2023-11-01 17:27 ` Tudor Ambarus
2023-11-02 16:43 ` Fabio Estevam
2023-11-02 16:43 ` Fabio Estevam
2023-11-02 17:36 ` Tudor Ambarus
2023-11-02 17:36 ` Tudor Ambarus
2023-11-02 17:40 ` Fabio Estevam
2023-11-02 17:40 ` Fabio Estevam
2023-11-02 17:47 ` Tudor Ambarus
2023-11-02 17:47 ` Tudor Ambarus
2023-11-02 17:54 ` Tudor Ambarus
2023-11-02 17:54 ` Tudor Ambarus
2023-11-02 17:59 ` Tudor Ambarus
2023-11-02 17:59 ` Tudor Ambarus
2023-11-02 18:01 ` Fabio Estevam
2023-11-02 18:01 ` Fabio Estevam
2023-11-02 18:21 ` Tudor Ambarus
2023-11-02 18:21 ` Tudor Ambarus
2023-11-02 18:33 ` Fabio Estevam
2023-11-02 18:33 ` Fabio Estevam
2023-11-02 18:46 ` Tudor Ambarus
2023-11-02 18:46 ` Tudor Ambarus
2023-11-02 18:56 ` Tudor Ambarus
2023-11-02 18:56 ` Tudor Ambarus
2023-11-02 21:42 ` Fabio Estevam
2023-11-02 21:42 ` Fabio Estevam
2023-11-03 11:47 ` Tudor Ambarus
2023-11-03 11:47 ` Tudor Ambarus
2023-11-03 12:30 ` Fabio Estevam
2023-11-03 12:30 ` Fabio Estevam
2023-11-03 12:53 ` Fabio Estevam
2023-11-03 12:53 ` Fabio Estevam
2023-11-03 13:26 ` Tudor Ambarus
2023-11-03 13:26 ` Tudor Ambarus
2023-11-03 13:37 ` Fabio Estevam
2023-11-03 13:37 ` Fabio Estevam
2023-11-03 13:48 ` Tudor Ambarus
2023-11-03 13:48 ` Tudor Ambarus
2023-11-03 14:16 ` Fabio Estevam
2023-11-03 14:16 ` Fabio Estevam
2023-11-03 14:37 ` Tudor Ambarus
2023-11-03 14:37 ` Tudor Ambarus
2023-11-03 14:58 ` Fabio Estevam [this message]
2023-11-03 14:58 ` Fabio Estevam
2023-11-06 14:24 ` Tudor Ambarus
2023-11-06 14:24 ` Tudor Ambarus
2023-11-06 9:34 ` Michael Walle
2023-11-06 9:34 ` Michael Walle
2023-11-06 14:23 ` Tudor Ambarus
2023-11-06 14:23 ` Tudor Ambarus
2023-11-06 14:56 ` Tudor Ambarus
2023-11-06 14:56 ` Tudor Ambarus
2023-11-09 9:09 ` Michael Walle
2023-11-09 9:09 ` Michael Walle
2023-11-15 7:06 ` Tudor Ambarus
2023-11-15 7:06 ` Tudor Ambarus
2023-11-08 8:06 ` Takahiro Kuwano
2023-11-08 8:06 ` Takahiro Kuwano
2023-11-08 8:54 ` Tudor Ambarus
2023-11-08 8:54 ` Tudor Ambarus
2023-11-01 14:58 ` [PATCH v2 3/6] mtd: spi-nor: spansion: enable die erase for multi die flashes Tudor Ambarus
2023-11-01 14:58 ` Tudor Ambarus
2023-11-01 14:58 ` [PATCH v2 4/6] mtd: spi-nor: micron-st: " Tudor Ambarus
2023-11-01 14:58 ` Tudor Ambarus
2023-11-01 14:58 ` [PATCH v2 5/6] mtd: spi-nor: remove NO_CHIP_ERASE flag Tudor Ambarus
2023-11-01 14:58 ` Tudor Ambarus
2023-11-01 14:58 ` [PATCH v2 6/6] mtd: spi-nor: micron-st: Add support for mt25qu01g Tudor Ambarus
2023-11-01 14:58 ` Tudor Ambarus
2023-11-01 15:54 ` [PATCH v2 0/6] mtd: spi-nor: introduce die erase Fabio Estevam
2023-11-01 15:54 ` Fabio Estevam
2023-11-15 6:10 ` Re (subset): " Tudor Ambarus
2023-11-15 6:10 ` Tudor Ambarus
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