Received-SPF: pass (google.com: domain of linux-kernel+bounces-74666-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1;
Content-Type: multipart/signed;
 boundary=c688cecef0f4ae5165c98d85f84090b76ef48c63c8e86034169e62c2a33d;
 micalg=pgp-sha256; protocol="application/pgp-signature"
Date: Wed, 21 Feb 2024 12:52:25 +0100
Message-Id: <CZAQHXT016DW.GDDY3ZAKS4CJ@kernel.org>
From: "Michael Walle" <mwalle@kernel.org>
To: "Pratyush Yadav" <pratyush@kernel.org>
Subject: Re: [PATCH v7] dt-bindings: mtd: spi-nor: add optional interrupts
 property
Cc: "Josua Mayer" <josua@solid-run.com>, "Tudor Ambarus"
 <tudor.ambarus@linaro.org>, "Miquel Raynal" <miquel.raynal@bootlin.com>,
 "Richard Weinberger" <richard@nod.at>, "Vignesh Raghavendra"
 <vigneshr@ti.com>, "Rob Herring" <robh+dt@kernel.org>, "Krzysztof
 Kozlowski" <krzysztof.kozlowski+dt@linaro.org>, "Conor Dooley"
 <conor+dt@kernel.org>, <linux-mtd@lists.infradead.org>, "Takahiro Kuwano"
 <tkuw584924@gmail.com>, "Takahiro Kuwano" <Takahiro.Kuwano@infineon.com>,
 "Yazan Shhady" <yazan.shhady@solid-run.com>, "Rob Herring"
 <robh@kernel.org>, <devicetree@vger.kernel.org>,
 <linux-kernel@vger.kernel.org>
References: <20240219-mtd-flash-interrupt-binding-v7-1-206e30a656fa@solid-run.com> <CZAM553H2H56.2TDN36QEL90XX@kernel.org> <a0144c5b-4095-4a0c-84b6-93dfe9631a6b@solid-run.com> <CZANBUQ2RJ3N.DO07Z9VFJCBZ@kernel.org> <mafs0v86i6qk6.fsf@kernel.org>
In-Reply-To: <mafs0v86i6qk6.fsf@kernel.org>
Precedence: bulk

--c688cecef0f4ae5165c98d85f84090b76ef48c63c8e86034169e62c2a33d
Mime-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Content-Type: text/plain; charset=UTF-8

On Wed Feb 21, 2024 at 11:48 AM CET, Pratyush Yadav wrote:
> On Wed, Feb 21 2024, Michael Walle wrote:
>
> > [+ Takahiro]
> >
> > Hi,
> >
> > On Wed Feb 21, 2024 at 10:13 AM CET, Josua Mayer wrote:
> >> Hi,
> >>
> >> Am 21.02.24 um 09:27 schrieb Michael Walle:
> >> > Hi,
> >> >
> >> > On Mon Feb 19, 2024 at 3:41 PM CET, Josua Mayer wrote:
> >> >> Some spi flash memories have an interrupt signal which can be used =
for
> >> >> signalling on-chip events such as busy status or ecc errors to the =
host.
> >> > Do you have an example? Maybe one with a public datasheet?
> >>
> >> My example is Infineon S28HS512T, however datasheet download requires=
=20
> >> user account.
> >>
> >> S26HS512T has interrupt line, too, and datasheet is downloadable witho=
ut=20
> >> registration:
> >> https://www.infineon.com/cms/en/product/memories/nor-flash/semper-nor-=
flash-family/semper-nor-flash/#!documents
> >
> > Thanks, as far as I can see, both are hyperbus flashes. I'm asking
> > because I'm not aware of any SPI NOR flash with an interrupt line.=20
>
> I found this datasheet [0] for S28H flash family from Infineon on
> Google. These are SPI NOR flashes. In pinout you can see there is an
> INT# signal. The signal description says: "System Interrupt (INT#). When
> LOW, the device is indicating that an internal event has occurred."
> Further in section 4.1.1.5 "INT# Output" it says:
>
>     HL-T/HS-T supports INT# output pin to indicate to the host system
>     that an event has occurred within the flash device. The user can
>     configure the INT# output pin to transition to the active (LOW)
>     state when:
>
>     - 2-bit ECC error is detected
>     - 1-bit ECC error is detected
>     - Transitioning from the Busy to the Ready state
>
> [0] https://www.infineon.com/dgdl/Infineon-S28HS256T_S28HS512T_S28HS01GT_=
S28HL256T_S28HL512T_S28HL01GT_256-Mb_(32-MB)_512-Mb_(64-MB)_1-Gb_(128-MB)_H=
S-T_(1.8-V)_HL-T_(3.0-V)_Semper_Flash_with_Octal_Interface-DataSheet-v03_00=
-EN.pdf?fileId=3D8ac78c8c7d0d8da4017d0ee6bca96f97&da=3Dt


Okay then,
Acked-by: Michael Walle <mwalle@kernel.org>

-michael

--c688cecef0f4ae5165c98d85f84090b76ef48c63c8e86034169e62c2a33d
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iIgEABYIADAWIQQCnWSOYTtih6UXaxvNyh2jtWxG+wUCZdXj+RIcbXdhbGxlQGtl
cm5lbC5vcmcACgkQzcodo7VsRvvNcAEApra9rSm1MfAkhRbVfkHLU/6D/SWddatA
gXpTpAKirOoBALjzfbDua3ec+2dO1vFKuvOuC4AdReQxdnr3bRXO4SYB
=rxHh
-----END PGP SIGNATURE-----

--c688cecef0f4ae5165c98d85f84090b76ef48c63c8e86034169e62c2a33d--