linux-kernel - [PATCH 2/3] ARM: dts: exynos: add simple battery to p4note

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Message-Id: <9436c417fc542eaa74011046369e089a68eea39e.1643757744.git.martin.juecker@gmail.com>
Date:   Wed,  2 Feb 2022 17:34:14 +0100
From:   Martin Jücker <martin.juecker@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Russell King <linux@...linux.org.uk>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Martin Jücker <martin.juecker@...il.com>
Subject: [PATCH 2/3] ARM: dts: exynos: add simple battery to p4note

Add a simple battery node to the p4note device tree to set the missing
values for the charger to work properly.

Signed-off-by: Martin Jücker <martin.juecker@...il.com>
---
 arch/arm/boot/dts/exynos4412-p4note.dtsi | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos4412-p4note.dtsi b/arch/arm/boot/dts/exynos4412-p4note.dtsi
index 63459db653ea..fcd75cceb877 100644
--- a/arch/arm/boot/dts/exynos4412-p4note.dtsi
+++ b/arch/arm/boot/dts/exynos4412-p4note.dtsi
@@ -115,6 +115,17 @@ wlan_pwrseq: sdhci3-pwrseq {
 		clock-names = "ext_clock";
 	};
 
+	battery_cell: battery-cell {
+		compatible = "simple-battery";
+		device-chemistry = "lithium-ion";
+		constant-charge-current-max-microamp = <2200000>;
+		precharge-current-microamp = <250000>;
+		charge-term-current-microamp = <250000>;
+		constant-charge-voltage-max-microvolt = <4200000>;
+
+		power-supplies = <&power_supply>;
+	};
+
 	i2c-gpio-1 {
 		compatible = "i2c-gpio";
 		sda-gpios = <&gpy2 4 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
@@ -193,7 +204,7 @@ i2c-gpio-4 {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		charger@6 {
+		power_supply: charger@6 {
 			compatible = "summit,smb347";
 			reg = <0x6>;
 			summit,enable-usb-charging;
@@ -201,6 +212,8 @@ charger@6 {
 			summit,fast-voltage-threshold-microvolt = <2600000>;
 			summit,chip-temperature-threshold-celsius = <130>;
 			summit,usb-current-limit-microamp = <1800000>;
+
+			monitored-battery = <&battery_cell>;
 		};
 	};
 
-- 
2.25.1