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From: George Moussalem <george.moussalem@outlook.com>
To: Miquel Raynal <miquel.raynal@bootlin.com>,
	Ziyang Huang <hzyitc@outlook.com>,
	quic_mdalam@quicinc.com
Cc: richard@nod.at, vigneshr@ti.com, tudor.ambarus@linaro.org,
	mmkurbanov@salutedevices.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, 8 Dec 2025 13:26:21 +0400	[thread overview]
Message-ID: <BL4PR19MB8902CF825EF35C4F145300BF9DA2A@BL4PR19MB8902.namprd19.prod.outlook.com> (raw)
In-Reply-To: <87wm2x74pz.fsf@bootlin.com>



On 12/8/25 12:33, Miquel Raynal wrote:
> 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?

Hi Alam,

Is the hardware itself limited to reading 4 ID bytes only or is it a
driver limitation?

> 
> Thanks,
> Miquèl

Best regards,
George

  reply	other threads:[~2025-12-08  9:26 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-02 15:05 Ziyang Huang
2025-12-08  8:33 ` Miquel Raynal
2025-12-08  9:26   ` George Moussalem [this message]
2025-12-08 10:26     ` Md Sadre Alam
2025-12-16  8:07     ` Miquel Raynal
2025-12-12 14:53   ` Ziyang Huang
2025-12-16  8:09 ` Miquel Raynal

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