[PATCH] arm64: dts: exynos: gs101-pixel-common: add Maxin MAX77759 fuel gauge

[André Draszik]

On Pixel 6 (and Pro), a MAX77759 companion PMIC for USB Type-C
applications is used, which contains four functional blocks (at
distinct I2C addresses):
  * top (including GPIO & NVMEM)
  * charger
  * fuel gauge
  * TCPCi

This change adds the fuel gauge.

Signed-off-by: André Draszik <andre.draszik at linaro.org>
---
For DT validation purposes, this patch depends on the binding updates
from https://lore.kernel.org/r/20260226-max77759-fg-v1-0-ff0a08a70a9f@linaro.org
They have been ACKed, but not merged yet.
---
 .../boot/dts/exynos/google/gs101-pixel-common.dtsi     | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi b/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi
index 93892adaa679..c01fec7c867d 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101-pixel-common.dtsi
@@ -225,6 +225,17 @@ usbc0_role_sw: endpoint {
 		};
 	};
 
+	fuel-gauge at 36 {
+		compatible = "maxim,max77759-fg";
+		reg = <0x36>;
+
+		pinctrl-0 = <&if_pmic_fg_int>;
+		pinctrl-names = "default";
+		interrupts-extended = <&gpa9 3 IRQ_TYPE_LEVEL_LOW>;
+
+		shunt-resistor-micro-ohms = <5000>;
+	};
+
 	pmic at 66 {
 		compatible = "maxim,max77759";
 		reg = <0x66>;
@@ -317,6 +328,13 @@ pmic_int: pmic-int-pins {
 		samsung,pin-pud = <GS101_PIN_PULL_NONE>;
 	};
 
+	if_pmic_fg_int: if-pmic-fg-int-pins {
+		samsung,pins = "gpa9-3";
+		samsung,pin-function = <GS101_PIN_FUNC_EINT>;
+		samsung,pin-pud = <GS101_PIN_PULL_UP>;
+		samsung,pin-drv = <GS101_PIN_DRV_2_5_MA>;
+	};
+
 	key_power: key-power-pins {
 		samsung,pins = "gpa10-1";
 		samsung,pin-function = <GS101_PIN_FUNC_EINT>;

---
base-commit: 877552aa875839314afad7154b5a561889e87ea9
change-id: 20260227-max77759-fg-dts-b12ebd5a90b3

Best regards,
-- 
André Draszik <andre.draszik at linaro.org>