diff mbox series

[v3,3/4] ARM: dts: sun8i-a83t-tbs-a711: Add support for the vibrator motor

Message ID 20200702112041.1942707-4-megous@megous.com (mailing list archive)
State New, archived
Headers show
Series Add support for vibrator motor for TBS A711 Tablet | expand

Commit Message

Ondřej Jirman July 2, 2020, 11:20 a.m. UTC 
The board has a vibrator mottor. 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(+)

Comments

Pavel Machek July 12, 2020, 9:02 p.m. UTC | #1 
Hi!

> The board has a vibrator mottor. Hook it to the input subsystem.

motor, I believe.

Best regards,
									Pavel
diff mbox series

Patch

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