This device tracks remaining battery capacity percentage using voltage
mode BMS. This commit enables the pm8916_bms node and adds a battery
node to track its capacity. Battery properties were taken from the
information printed on the battery itself and downstream device tree
for a battery named "nvt+atl_3000mah" [1]
[1] https://github.com/Asus-MSM8916/android_kernel_asus_msm8916/blob/10.x/arch/arm/boot/dts/qcom/ASUS_ZE550KL_1936167_3000mAh_3p4COV_VBMS_Final.dtsi
Signed-off-by: Erikas Bitovtas <xerikasxx@gmail.com>
---
arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts b/arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts
index ebb548e62e02..b58f0a04abfd 100644
--- a/arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts
+++ b/arch/arm64/boot/dts/qcom/msm8939-asus-z00t.dts
@@ -20,6 +20,25 @@ aliases {
serial0 = &blsp_uart2;
};
+ battery: battery {
+ compatible = "simple-battery";
+ device-chemistry = "lithium-ion-polymer";
+ voltage-min-design-microvolt = <3400000>;
+ voltage-max-design-microvolt = <4400000>;
+ energy-full-design-microwatt-hours = <11500000>;
+ charge-full-design-microamp-hours = <3000000>;
+
+ ocv-capacity-celsius = <25>;
+ ocv-capacity-table-0 = <4372000 100>, <4306000 95>, <4247000 90>,
+ <4190000 85>, <4134000 80>, <4081000 75>, <4030000 70>,
+ <3984000 65>, <3930000 60>, <3884000 55>, <3850000 50>,
+ <3826000 45>, <3804000 40>, <3786000 35>, <3770000 30>,
+ <3753000 25>, <3734000 20>, <3712000 16>, <3693000 13>,
+ <3686000 11>, <3684000 10>, <3682000 9>, <3680000 8>,
+ <3676000 7>, <3668000 6>, <3643000 5>, <3600000 4>,
+ <3542000 3>, <3462000 2>, <3340000 1>, <3000000 0>;
+ };
+
chosen {
stdout-path = "serial0";
};
@@ -135,6 +154,12 @@ &mpss_mem {
reg = <0x0 0x86800000 0x0 0x5500000>;
};
+&pm8916_bms {
+ monitored-battery = <&battery>;
+
+ status = "okay";
+};
+
&pm8916_codec {
qcom,micbias-lvl = <2800>;
qcom,mbhc-vthreshold-low = <75 150 237 450 500>;
--
2.52.0