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From: Marco Felsch <m.felsch@pengutronix.de>
To: Ondrej Jirman <megous@megous.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Luca Weiss <luca@z3ntu.xyz>, Tomas Novotny <tomas@novotny.cz>,
	linux-input@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v5 3/4] ARM: dts: sun8i-a83t-tbs-a711: Add support for the vibrator motor
Date: Fri, 31 Jul 2020 07:41:46 +0200
Message-ID: <20200731054146.3d64tchfvbb6gfwj@pengutronix.de> (raw)
In-Reply-To: <20200730132446.3139980-4-megous@megous.com>

Hi Ondrej,

On 20-07-30 15:24, Ondrej Jirman wrote:
> The board has a vibrator motor. Hook it to the input subsystem.
> 
> According to the PMIC specification, LDO needs to be enabled (value 0b11)
> to achieve the specified max driving current of 150mA. We can't drive
> the motor with just GPIO mode.
> 
> In GPIO mode the chip is probably just using the regular CMOS logic
> output circuitry (typically limited to around 20-35mA, but not specified
> in this datasheet).
> 
> Signed-off-by: Ondrej Jirman <megous@megous.com>
> ---
>  arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> index bfc9bb277a49..a278a1e33930 100644
> --- a/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> +++ b/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts
> @@ -99,6 +99,11 @@ panel_input: endpoint {
>  		};
>  	};
>  
> +	vibrator {
> +		compatible = "gpio-vibrator";
> +		vcc-supply = <&reg_ldo_io1>;
> +	};

Please keep the alphabetical order. I also would merge patch 3 and 4
into one since they are realted changes.

Regards,
  Marco

> +
>  	reg_gps: reg-gps {
>  		compatible = "regulator-fixed";
>  		regulator-name = "gps";

  reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-30 13:24 [PATCH v5 0/4] Add support for vibrator motor for TBS A711 Tablet Ondrej Jirman
2020-07-30 13:24 ` [PATCH v5 1/4] dt-bindings: input: gpio-vibrator: Don't require enable-gpios Ondrej Jirman
2020-07-30 13:24 ` [PATCH v5 2/4] input: gpio-vibra: Allow to use vcc-supply alone to control the vibrator Ondrej Jirman
2020-07-30 13:24 ` [PATCH v5 3/4] ARM: dts: sun8i-a83t-tbs-a711: Add support for the vibrator motor Ondrej Jirman
2020-07-31  5:41   ` Marco Felsch [this message]
2020-07-30 13:24 ` [PATCH v5 4/4] ARM: dts: sun8i-a83t-tbs-a711: Increase voltage on the vibrator Ondrej Jirman

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