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From: Andreas Kemnade <andreas@kemnade.info>
To: Alistair Francis <alistair@alistair23.me>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
	mylene.josserand@free-electrons.com, linus.walleij@linaro.org,
	rydberg@bitmath.org, dmitry.torokhov@gmail.com,
	robh+dt@kernel.org, alistair23@gmail.com
Subject: Re: [PATCH v2 2/4] Documentation: DT: bindings: input: Add documentation for cyttsp5
Date: Fri, 5 Nov 2021 15:21:54 +0100	[thread overview]
Message-ID: <20211105152154.20f5cbd1@aktux> (raw)
In-Reply-To: <20211103114830.62711-3-alistair@alistair23.me>

Hi,

I finally found time to test this.

On Wed,  3 Nov 2021 21:48:28 +1000
Alistair Francis <alistair@alistair23.me> wrote:

[...]
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        touchscreen@24 {
> +            compatible = "cypress,tt2100";
> +            reg = <0x24>;
> +            pinctrl-names = "default";
> +            pinctrl-0 = <&tp_reset_ds203>;
> +            interrupt-parent = <&pio>;
> +            interrupts = <1 5 IRQ_TYPE_LEVEL_LOW>;
hmm, in the code is IRQ_TRIGGER_FALLING but here is LEVEL_LOW, hmm what
it is really?

> +            reset-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>;

hmm, if the reset gpio at the chip is active low (I guess it is) that
would indicate an inverter between SoC and gpio. So a nonstandard setup
as an example, probably not a good idea.

Regards,
Andreas

WARNING: multiple messages have this Message-ID (diff)
From: Andreas Kemnade <andreas@kemnade.info>
To: Alistair Francis <alistair@alistair23.me>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
	mylene.josserand@free-electrons.com, linus.walleij@linaro.org,
	rydberg@bitmath.org, dmitry.torokhov@gmail.com,
	robh+dt@kernel.org, alistair23@gmail.com
Subject: Re: [PATCH v2 2/4] Documentation: DT: bindings: input: Add documentation for cyttsp5
Date: Fri, 5 Nov 2021 15:21:54 +0100	[thread overview]
Message-ID: <20211105152154.20f5cbd1@aktux> (raw)
In-Reply-To: <20211103114830.62711-3-alistair@alistair23.me>

Hi,

I finally found time to test this.

On Wed,  3 Nov 2021 21:48:28 +1000
Alistair Francis <alistair@alistair23.me> wrote:

[...]
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        touchscreen@24 {
> +            compatible = "cypress,tt2100";
> +            reg = <0x24>;
> +            pinctrl-names = "default";
> +            pinctrl-0 = <&tp_reset_ds203>;
> +            interrupt-parent = <&pio>;
> +            interrupts = <1 5 IRQ_TYPE_LEVEL_LOW>;
hmm, in the code is IRQ_TRIGGER_FALLING but here is LEVEL_LOW, hmm what
it is really?

> +            reset-gpios = <&pio 7 1 GPIO_ACTIVE_HIGH>;

hmm, if the reset gpio at the chip is active low (I guess it is) that
would indicate an inverter between SoC and gpio. So a nonstandard setup
as an example, probably not a good idea.

Regards,
Andreas

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-11-05 14:22 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-03 11:48 [PATCH v2 0/4] Add support for the Cypress cyttsp5 Alistair Francis
2021-11-03 11:48 ` Alistair Francis
2021-11-03 11:48 ` [PATCH v2 1/4] Input: Add driver for Cypress Generation 5 touchscreen Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-05 15:01   ` Andreas Kemnade
2021-11-05 15:01     ` Andreas Kemnade
2021-11-06  6:47   ` Dmitry Torokhov
2021-11-06  6:47     ` Dmitry Torokhov
2021-12-01 12:27     ` Alistair Francis
2021-12-01 12:27       ` Alistair Francis
2021-12-13  5:45       ` Dmitry Torokhov
2021-12-13  5:45         ` Dmitry Torokhov
2021-12-13 18:49         ` Andreas Kemnade
2021-12-13 18:49           ` Andreas Kemnade
2021-12-18 22:18         ` Andreas Kemnade
2021-12-18 22:18           ` Andreas Kemnade
2021-12-21 23:28           ` Alistair Francis
2021-12-21 23:28             ` Alistair Francis
2021-12-23 13:47   ` Andy Shevchenko
2021-12-23 13:47     ` Andy Shevchenko
2021-11-03 11:48 ` [PATCH v2 2/4] Documentation: DT: bindings: input: Add documentation for cyttsp5 Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-03 23:07   ` Rob Herring
2021-11-03 23:07     ` Rob Herring
2021-11-05 14:21   ` Andreas Kemnade [this message]
2021-11-05 14:21     ` Andreas Kemnade
2021-11-10 12:59     ` Alistair Francis
2021-11-10 12:59       ` Alistair Francis
2021-11-10 17:36       ` Andreas Kemnade
2021-11-10 17:36         ` Andreas Kemnade
2021-11-11 15:16         ` Linus Walleij
2021-11-11 15:16           ` Linus Walleij
2021-11-18 12:51           ` Alistair Francis
2021-11-18 12:51             ` Alistair Francis
2021-11-03 11:48 ` [PATCH v2 3/4] ARM: imx_v6_v7_defconfig: Enable the cyttsp5 touchscreen Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-03 11:48 ` [PATCH v2 4/4] ARM: dts: imx7d: remarkable2: Enable the cyttsp5 Alistair Francis
2021-11-03 11:48   ` Alistair Francis
2021-11-06  2:25   ` Dmitry Torokhov
2021-11-06  2:25     ` Dmitry Torokhov
2021-11-05 14:52 ` [PATCH v2 0/4] Add support for the Cypress cyttsp5 Andreas Kemnade
2021-11-05 14:52   ` Andreas Kemnade
2021-11-25  9:44   ` Alistair Francis
2021-11-25  9:44     ` Alistair Francis

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