[PATCH] arm64: dts: qcom: msm8916-samsung-fortuna/rossa: Add fuel gauge

[Raymond Hackley <raymondhackley@protonmail.com>]

From: Joe Mason <buddyjojo06@outlook.com>

Like the Samsung Galaxy A3/A5, the Grand Prime/Core Prime uses a
Richtek RT5033 PMIC as battery fuel gauge, charger, flash LED and for some
regulators.
For now, only add the fuel gauge/battery device to the device tree, so we
can check the remaining battery percentage.

The other RT5033 drivers need some more work first before they can be used
properly.

Signed-off-by: Joe Mason <buddyjojo06@outlook.com>
[Raymond: Move to fortuna-common. Use interrupts-extended]
Signed-off-by: Raymond Hackley <raymondhackley@protonmail.com>
---
 .../qcom/msm8916-samsung-fortuna-common.dtsi  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-fortuna-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-fortuna-common.dtsi
index 052024073f54..c2800ad2dd5b 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-fortuna-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-fortuna-common.dtsi
@@ -80,6 +80,20 @@ muic: extcon@25 {
 	};
 };
 
+&blsp_i2c4 {
+	status = "okay";
+
+	fuel-gauge@35 {
+		compatible = "richtek,rt5033-battery";
+		reg = <0x35>;
+
+		interrupts-extended = <&tlmm 121 IRQ_TYPE_EDGE_FALLING>;
+
+		pinctrl-0 = <&fg_alert_default>;
+		pinctrl-names = "default";
+	};
+};
+
 &blsp_uart2 {
 	status = "okay";
 };
@@ -152,6 +166,13 @@ &wcnss_mem {
 };
 
 &tlmm {
+	fg_alert_default: fg-alert-default-state {
+		pins = "gpio121";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	gpio_keys_default: gpio-keys-default-state {
 		pins = "gpio107", "gpio109";
 		function = "gpio";
-- 
2.39.2