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charset=UTF-8 Content-Transfer-Encoding: 7bit On 12/15/23 10:02, Mahapatra, Amit Kumar wrote: > Hello Tudor, Hi, > >> -----Original Message----- >> From: Tudor Ambarus >> Sent: Friday, December 15, 2023 1:40 PM >> To: Mahapatra, Amit Kumar ; >> broonie@kernel.org; pratyush@kernel.org; miquel.raynal@bootlin.com; >> richard@nod.at; vigneshr@ti.com; sbinding@opensource.cirrus.com; >> lee@kernel.org; james.schulman@cirrus.com; david.rhodes@cirrus.com; >> rf@opensource.cirrus.com; perex@perex.cz; tiwai@suse.com >> Cc: linux-spi@vger.kernel.org; linux-kernel@vger.kernel.org; >> michael@walle.cc; linux-mtd@lists.infradead.org; >> nicolas.ferre@microchip.com; alexandre.belloni@bootlin.com; >> claudiu.beznea@tuxon.dev; Simek, Michal ; linux- >> arm-kernel@lists.infradead.org; alsa-devel@alsa-project.org; >> patches@opensource.cirrus.com; linux-sound@vger.kernel.org; git (AMD- >> Xilinx) ; amitrkcian2002@gmail.com >> Subject: Re: [PATCH v11 07/10] mtd: spi-nor: Add stacked memories support >> in spi-nor >> >> >> >> On 15.12.2023 09:55, Mahapatra, Amit Kumar wrote: >>>> Thanks! Can you share with us what flashes you used for testing in >>>> the stacked and parallel configurations? >>> I used SPI-NOR QSPI flashes for testing stacked and parallel. >> >> I got that, I wanted the flash name or device ID. > > N25Q00A, MX66U2G45G, IS25LP01G & W25H02JV are some of the QSPI flashes on > which we tested. Additionally, we conducted tests on over 30 different > QSPI flashes from four distinct vendors (Miron, Winbond, Macronix, and ISSI). > Great. >> What I'm interested is if each flash is in its own package. Are they? > > I'm sorry, but I don't quite understand what you mean by "if each flash in > its own package." > There are flashes that are stacked at the physical level. It's a single flash with multiple dies, that are all under a single physical package. As I understand, your stacked flash model is at logical level. You have 2 flashes each in its own package. 2 different entities. Is my understanding correct? Cheers, ta