linux-kernel - [PATCH 3/7] ARM: dts: exynos: k3g: Add fuel gauge support

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Message-ID: <20230716220644.22158-5-markuss.broks@gmail.com>
Date:   Mon, 17 Jul 2023 01:05:05 +0300
From:   Markuss Broks <markuss.broks@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Markuss Broks <markuss.broks@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] ARM: dts: exynos: k3g: Add fuel gauge support

This device has Maxim MAX17048 fuel gauge, just like
its Snapdragon counterpart. It inherits the double capacity
issue.

Signed-off-by: Markuss Broks <markuss.broks@...il.com>
---
 arch/arm/boot/dts/exynos5422-samsung-k3g.dts | 29 ++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
index c3e006dc34ea..582faedd6aab 100644
--- a/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
+++ b/arch/arm/boot/dts/exynos5422-samsung-k3g.dts
@@ -80,6 +80,30 @@ firmware@...3000 {
 		reg = <0x02073000 0x1000>;
 	};
 
+	i2c-battery {
+		compatible = "i2c-gpio";
+
+		sda-gpios = <&gpb0 3 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		scl-gpios = <&gpb0 4 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+		i2c-gpio,delay-us = <2>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		battery@36 {
+			compatible = "maxim,max17048";
+			reg = <0x36>;
+
+			interrupt-parent = <&gpx1>;
+			interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
+
+			pinctrl-names = "default";
+			pinctrl-0 = <&battery_irq>;
+
+			maxim,double-soc; /* Reports double the capacity */
+		};
+	};
+
 	tsp_vdd: regulator-tsp-vdd-en {
 		compatible = "regulator-fixed";
 		regulator-name = "tsp_vdd_en";
@@ -703,6 +727,11 @@ s2mps11_irq: s2mps11-irq-pins {
 		samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
 	};
 
+	battery_irq: battery-irq-pins {
+		samsung,pins = "gpx1-5";
+		samsung,pin-pud = <EXYNOS_PIN_PULL_DOWN>;
+	};
+
 	touch_irq: touch-irq-pins {
 		samsung,pins = "gpx1-6";
 		samsung,pin-pud = <EXYNOS_PIN_PULL_DOWN>;
-- 
2.41.0