[PATCH 1/2] ARM: dts: qcom: msm8974-klte: Add fuel gauge

[Iskren Chernev]

The Samsung Galaxy S5 uses a maxim17048 fuelgauge. The maxim,rcomp value
is taken from downstream kernel. Model data and temperature-based
compensation are not yet supported in the mainline driver, but the
readings seem fine nevertheless.

Signed-off-by: Iskren Chernev <iskren.cher...@gmail.com>
---
 .../boot/dts/qcom-msm8974-samsung-klte.dts    | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts 
b/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts
index b0899107f3ced..97352de913142 100644
--- a/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts
+++ b/arch/arm/boot/dts/qcom-msm8974-samsung-klte.dts
@@ -406,6 +406,16 @@ mux {
                        };
                };
 
+               i2c12_pins: i2c12 {
+                       mux {
+                               pins = "gpio87", "gpio88";
+                               function = "blsp_i2c12";
+
+                               drive-strength = <2>;
+                               bias-disable;
+                       };
+               };
+
                i2c_touchkey_pins: i2c-touchkey {
                        mux {
                                pins = "gpio95", "gpio96";
@@ -666,6 +676,27 @@ max77826_buckboost: BUCKBOOST {
                        };
                };
        };
+
+       i2c@f9968000 {
+               status = "okay";
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&i2c12_pins>;
+
+               fuelgauge@36 {
+                       compatible = "maxim,max17048";
+                       reg = <0x36>;
+
+                       maxim,double-soc;
+                       maxim,rcomp = /bits/ 8 <0x56>;
+
+                       interrupt-parent = <&pma8084_gpios>;
+                       interrupts = <21 IRQ_TYPE_EDGE_FALLING>;
+
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&fuelgauge_pin>;
+               };
+       };
 };
 
 &spmi_bus {
@@ -703,6 +734,14 @@ wlan_sleep_clk_pin: wlan-sleep-clk-pin {
                                power-source = <PMA8084_GPIO_S4>;
                                qcom,drive-strength = <PMIC_GPIO_STRENGTH_HIGH>;
                        };
+
+                       fuelgauge_pin: fuelgauge-int-pin {
+                               pins = "gpio21";
+                               function = "normal";
+                               bias-disable;
+                               input-enable;
+                               power-source = <PMA8084_GPIO_S4>;
+                       };
                };
        };
 };

base-commit: 6147c83fd749d19a0d3ccc2f64d12138ab010b47
-- 
2.29.2