From: Ondrej Jirman <megous@megous.com>
To: linux-sunxi@googlegroups.com,
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>
Cc: Ondrej Jirman <megous@megous.com>, 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: [PATCH v4 3/4] ARM: dts: sun8i-a83t-tbs-a711: Add support for the vibrator motor
Date: Tue, 14 Jul 2020 12:23:02 +0200 [thread overview]
Message-ID: <20200714102303.3007896-4-megous@megous.com> (raw)
In-Reply-To: <20200714102303.3007896-1-megous@megous.com>
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 = <®_ldo_io1>;
+ };
+
reg_gps: reg-gps {
compatible = "regulator-fixed";
regulator-name = "gps";
--
2.27.0
next prev parent reply other threads:[~2020-07-14 10:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 10:22 [PATCH v4 0/4] Add support for vibrator motor for TBS A711 Tablet Ondrej Jirman
2020-07-14 10:23 ` [PATCH v4 1/4] dt-bindings: input: gpio-vibrator: Don't require enable-gpios Ondrej Jirman
2020-07-14 10:23 ` [PATCH v4 2/4] input: gpio-vibra: Allow to use vcc-supply alone to control the vibrator Ondrej Jirman
2020-07-30 6:19 ` Dmitry Torokhov
2020-07-30 9:18 ` Ondřej Jirman
2020-07-14 10:23 ` Ondrej Jirman [this message]
2020-07-14 10:23 ` [PATCH v4 4/4] ARM: dts: sun8i-a83t-tbs-a711: Increase voltage on " Ondrej Jirman
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