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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Ziyang Huang <hzyitc@outlook.com>
Cc: richard@nod.at,  vigneshr@ti.com,  tudor.ambarus@linaro.org,
	mmkurbanov@salutedevices.com,  george.moussalem@outlook.com,
	linux-mtd@lists.infradead.org,  linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Revert "mtd: spinand: esmt: fix id code for F50D1G41LB"
Date: Mon, 08 Dec 2025 09:33:28 +0100	[thread overview]
Message-ID: <87wm2x74pz.fsf@bootlin.com> (raw)
In-Reply-To: <TYZPR01MB55567825EA7348A0482DB916C9D8A@TYZPR01MB5556.apcprd01.prod.exchangelabs.com> (Ziyang Huang's message of "Tue, 2 Dec 2025 23:05:56 +0800")

On 02/12/2025 at 23:05:56 +08, Ziyang Huang <hzyitc@outlook.com> wrote:

> This reverts commit dd26402642a0899fde59ea6b0852fad3d799b4cc.
>
> The issue George met is due to the limit of QPIC, not the issue of the
> flash chip.
>
> QPIC only supports 4 bytes ID. So the fifth byte is always 0.
>
> If we use spi-gpio, the fifth byte can be read correctly.
>
> Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
> ---

So how do we solve that?

Is there anything than can be done on the qpic side?

Thanks,
Miquèl

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

WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Ziyang Huang <hzyitc@outlook.com>
Cc: richard@nod.at,  vigneshr@ti.com,  tudor.ambarus@linaro.org,
	mmkurbanov@salutedevices.com,  george.moussalem@outlook.com,
	linux-mtd@lists.infradead.org,  linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Revert "mtd: spinand: esmt: fix id code for F50D1G41LB"
Date: Mon, 08 Dec 2025 09:33:28 +0100	[thread overview]
Message-ID: <87wm2x74pz.fsf@bootlin.com> (raw)
In-Reply-To: <TYZPR01MB55567825EA7348A0482DB916C9D8A@TYZPR01MB5556.apcprd01.prod.exchangelabs.com> (Ziyang Huang's message of "Tue, 2 Dec 2025 23:05:56 +0800")

On 02/12/2025 at 23:05:56 +08, Ziyang Huang <hzyitc@outlook.com> wrote:

> This reverts commit dd26402642a0899fde59ea6b0852fad3d799b4cc.
>
> The issue George met is due to the limit of QPIC, not the issue of the
> flash chip.
>
> QPIC only supports 4 bytes ID. So the fifth byte is always 0.
>
> If we use spi-gpio, the fifth byte can be read correctly.
>
> Signed-off-by: Ziyang Huang <hzyitc@outlook.com>
> ---

So how do we solve that?

Is there anything than can be done on the qpic side?

Thanks,
Miquèl

  reply	other threads:[~2025-12-08  8:33 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-02 15:05 [PATCH] Revert "mtd: spinand: esmt: fix id code for F50D1G41LB" Ziyang Huang
2025-12-02 15:05 ` Ziyang Huang
2025-12-08  8:33 ` Miquel Raynal [this message]
2025-12-08  8:33   ` Miquel Raynal
2025-12-08  9:26   ` George Moussalem
2025-12-08  9:26     ` George Moussalem
2025-12-08 10:26     ` Md Sadre Alam
2025-12-08 10:26       ` Md Sadre Alam
2025-12-16  8:07     ` Miquel Raynal
2025-12-16  8:07       ` Miquel Raynal
2025-12-12 14:53   ` Ziyang Huang
2025-12-12 14:53     ` Ziyang Huang
2025-12-16  8:09 ` Miquel Raynal
2025-12-16  8:09   ` Miquel Raynal

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