From: Maximilian Weigand <mweigand2017@gmail.com>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org,
Alistair Francis <alistair@alistair23.me>
Subject: Re: [PATCH v2 3/6] dt-bindings: input: cypress,tt21000 - fix interrupt type in dts example
Date: Tue, 2 May 2023 16:23:54 +0200 [thread overview]
Message-ID: <5aaba4d1-f7e2-9d30-5f15-0713f9fc6a8c@gmail.com> (raw)
In-Reply-To: <ZFBYIZc5zKs6dpHF@google.com>
Hi,
On 02.05.23 02:24, Dmitry Torokhov wrote:
> On Mon, May 01, 2023 at 01:30:07PM +0200, Maximilian Weigand wrote:
>> Triggering the interrupt of the IRQ_TYPE_LEVEL_LOW type can lead to
>> probing issues with the device for the current driver (encountered on
>> the Pine64 PineNote). Basically the interrupt would be triggered before
>> certain commands were sent to the device, leading to a race between the
>> device responding fast enough and the irq handler fetching a data frame
>> from it. Actually all devices currently using the driver already use a
>> falling edge trigger.
>
> I'd prefer we adjusted the driver to handle level interrupts properly.
Ok, I will have a look at that. Just to be clear: The driver should work
only with level interrupts, or should it optimally support both level
and falling edge triggers?
Thanks and best regards
Maximilian
next prev parent reply other threads:[~2023-05-02 14:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-01 11:30 [PATCH v2 0/6] Small fixes to the cyttsp5 touchscreen driver Maximilian Weigand
2023-05-01 11:30 ` [PATCH v2 1/6] Input: cyttsp5 - fix array length Maximilian Weigand
2023-05-02 0:15 ` Dmitry Torokhov
2023-05-01 11:30 ` [PATCH v2 2/6] Input: cyttsp5 - remove unused code Maximilian Weigand
2023-05-02 0:15 ` Dmitry Torokhov
2023-05-01 11:30 ` [PATCH v2 3/6] dt-bindings: input: cypress,tt21000 - fix interrupt type in dts example Maximilian Weigand
2023-05-02 0:24 ` Dmitry Torokhov
2023-05-02 14:23 ` Maximilian Weigand [this message]
2023-05-02 20:51 ` Dmitry Torokhov
2023-05-01 11:30 ` [PATCH v2 4/6] Input: cyttsp5 - properly initialize the device as a pm wakeup device Maximilian Weigand
2023-05-02 0:14 ` Dmitry Torokhov
2023-05-01 11:30 ` [PATCH v2 5/6] dt-bindings: input: cypress,tt21000 - add wakeup-source entry to documentation Maximilian Weigand
2023-05-02 0:28 ` Dmitry Torokhov
2023-05-01 11:30 ` [PATCH v2 6/6] Input: cyttsp5 - implement proper sleep and wakeup procedures Maximilian Weigand
2023-05-02 0:22 ` Dmitry Torokhov
2023-05-02 14:21 ` Maximilian Weigand
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