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From: Asmaa Mnebhi <asmaa@nvidia.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Linus Walleij <linus.walleij@linaro.org>,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	netdev <netdev@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
	Jakub Kicinski <kuba@kernel.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	David Thompson <davthompson@nvidia.com>
Subject: RE: [PATCH v3 1/2] gpio: mlxbf2: Introduce IRQ support
Date: Mon, 27 Sep 2021 14:26:33 +0000	[thread overview]
Message-ID: <CH2PR12MB38956613C5D7ACD6078FC86ED7A79@CH2PR12MB3895.namprd12.prod.outlook.com> (raw)
In-Reply-To: <CH2PR12MB389585F7D5EFE5E2453593DBD7A79@CH2PR12MB3895.namprd12.prod.outlook.com>

> The BlueField GPIO HW only support Edge interrupts.

O.K. So please remove all level support from this driver,
and return -EINVAL if requested to do level.
This also means, you cannot use interrupts with the
Ethernet PHY. The PHY is using level interrupts.

Why not? The HW folks said it is alright because they
Do some internal conversion of PHY signal and we have
tested This extensively.

Oh sorry I misunderstood what you meant.
In software we don't use the GPIO pin value itself to
Register the interrupt. We use a HW interrupt common
To all GPIO pins. So we should be ok. We only set this
EDGE register because it is required from a HW
Perspective to detect the INT_N signal.

  reply	other threads:[~2021-09-27 14:26 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-23 20:22 [PATCH v3 0/2] gpio: mlxbf2: Introduce proper interrupt handling Asmaa Mnebhi
2021-09-23 20:22 ` [PATCH v3 1/2] gpio: mlxbf2: Introduce IRQ support Asmaa Mnebhi
2021-09-24 11:46   ` Andrew Lunn
2021-09-24 23:48     ` Linus Walleij
2021-09-27 14:04       ` Asmaa Mnebhi
2021-09-27 14:08         ` Andrew Lunn
2021-09-27 14:19           ` Asmaa Mnebhi
2021-09-27 14:26             ` Asmaa Mnebhi [this message]
2021-09-27 14:56             ` Andrew Lunn
2021-09-27 15:52               ` Asmaa Mnebhi
2021-09-27 19:10                 ` Andrew Lunn
2021-09-29 19:14                   ` Asmaa Mnebhi
2021-09-28 15:02               ` Asmaa Mnebhi
2021-09-29 20:24                 ` Andrew Lunn
2021-10-08 14:47                   ` Asmaa Mnebhi
2021-09-23 20:22 ` [PATCH v3 2/2] net: mellanox: mlxbf_gige: Replace non-standard interrupt handling Asmaa Mnebhi
  -- strict thread matches above, loose matches on Subject: below --
2021-09-23 20:18 [PATCH v3 0/2] gpio: mlxbf2: Introduce proper " Asmaa Mnebhi
2021-09-23 20:18 ` [PATCH v3 1/2] gpio: mlxbf2: Introduce IRQ support Asmaa Mnebhi

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