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 <[email protected]> --- 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
