linux-kernel - [PATCH 3/3] arm: arm64: dts: ti: k3-am642-phyboard-electra-rdk: Enable trickle charger

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Message-ID: <20240911124251.702590-3-w.egorov@phytec.de>
Date: Wed, 11 Sep 2024 14:42:51 +0200
From: Wadim Egorov <w.egorov@...tec.de>
To: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <upstream@...ts.phytec.de>
CC: <d.schultz@...tec.de>, <nm@...com>, <vigneshr@...com>,
	<kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>
Subject: [PATCH 3/3] arm: arm64: dts: ti: k3-am642-phyboard-electra-rdk: Enable trickle charger

From: Daniel Schultz <d.schultz@...tec.de>

Be default, R511 iand D19 are not populated on our phyBOARD-Electra.
This resistor and diode connect VCC_3V3_SW with VBAT and permantly
charge the RTC battery.

Enable trickle charge to charge the battery through the RTC.

Signed-off-by: Daniel Schultz <d.schultz@...tec.de>
Signed-off-by: Wadim Egorov <w.egorov@...tec.de>
---
 arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts
index 30729b49dd69..fec917fa067c 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-phyboard-electra-rdk.dts
@@ -198,6 +198,10 @@ AM64X_IOPAD(0x0040, PIN_OUTPUT, 7)	/* (U21) GPMC0_AD1.GPIO0_16 */
 	};
 };
 
+&i2c_som_rtc {
+	trickle-resistor-ohms = <3000>;
+};
+
 &main_i2c1 {
 	status = "okay";
 	pinctrl-names = "default";
-- 
2.34.1