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[86.177.67.114]) by smtp.googlemail.com with ESMTPSA id y68sm17401672wrb.73.2018.04.07.06.47.37 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 07 Apr 2018 06:47:38 -0700 (PDT) From: Craig Tatlor Cc: ctatlor97@gmail.com, linux-arm-msm@vger.kernel.org, Sebastian Reichel , Rob Herring , Mark Rutland , Mauro Carvalho Chehab , "David S. Miller" , Greg Kroah-Hartman , Linus Walleij , Andrew Morton , Randy Dunlap , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/3] dt-bindings: power: supply: qcom_bms: Add bindings Date: Sat, 7 Apr 2018 14:46:57 +0100 Message-Id: <20180407134712.23131-2-ctatlor97@gmail.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180407134712.23131-1-ctatlor97@gmail.com> References: <20180407134712.23131-1-ctatlor97@gmail.com> To: unlisted-recipients:; (no To-header on input) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add bindings for the Qualcomm battery measurement system. Signed-off-by: Craig Tatlor --- .../bindings/power/supply/qcom_bms.txt | 93 +++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/qcom_bms.txt diff --git a/Documentation/devicetree/bindings/power/supply/qcom_bms.txt b/Documentation/devicetree/bindings/power/supply/qcom_bms.txt new file mode 100644 index 000000000000..6296399edc09 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/qcom_bms.txt @@ -0,0 +1,93 @@ +Qualcomm Battery Measurement System + +The Qualcomm Battery Measurement System is found inside of Qualcomm PM8941 +PMICs. It provides OCV and coulomb counter registers that allow the kernel +to infer a capacity level. + +Required properties: +- compatible: Should contain "qcom,pm8941-bms". +- reg: Specifies the SPMI address and length of the + controller's registers. +- interrupts: OCV threshold interrupt. +- io-channels: Should contain IIO channel specifier for the + ADC channel that reports battery temperature. +- io-channel-names: Should contain "temp". +- qcom,fcc-temp-legend: An array containing the temperature, in degC, + for each column of the FCC lookup table. +- qcom,fcc-lut: An array of FCC values in mah, one entry for each + temperature defined in in qcom,fcc-temp-legend. +- qcom,ocv-temp-legend: An array containing the temperature, in degC, + for each column of the OCV lookup table. +- qcom,ocv-capacity-legend: An array containing the capacity for each + row of the OCV lookup table. +- qcom,ocv-lut: An array of OCV values in mV, one entry for each + capacity defined in qcom,ocv-capacity-legend. + +Example: + + pm8941_vadc: vadc@3100 { + compatible = "qcom,spmi-vadc"; + reg = <0x3100>; + interrupts = <0x0 0x31 0x0 IRQ_TYPE_EDGE_RISING>; + #address-cells = <1>; + #size-cells = <0>; + #io-channel-cells = <1>; + + bat_temp { + reg = ; + }; + }; + + bms@4000 { + compatible = "qcom,pm8941-bms"; + reg = <0x4000>; + interrupts = <0x0 0x40 0x4 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "ocv_thr"; + + io-channels = <&pm8941_vadc VADC_LR_MUX1_BAT_THERM>; + io-channel-names = "temp"; + + qcom,fcc-temp-legend = /bits/ 8 <(-10) 0 25 50 65>; + qcom,fcc-lut = /bits/ 16 <6010 6070 6680 6780 6670>; + + qcom,ocv-capacity-legend = /bits/ 8 <100 95 90 85 + 80 75 70 65 + 60 55 50 45 + 40 35 30 25 + 20 15 10 9 + 8 7 6 5 4 + 3 2 1 0>; + + qcom,ocv-temp-legend = /bits/ 8 <(-10) 0 25 50 65>; + qcom,ocv-lut = /bits/ 16 <4288 4288 4306 4315 4315 + 4261 4241 4259 4266 4246 + 4201 4181 4201 4207 4187 + 4153 4133 4150 4155 4135 + 4105 4085 4100 4104 4084 + 4058 4038 4052 4058 4038 + 4012 3992 4004 4014 3994 + 3970 3950 3959 3971 3951 + 3931 3911 3915 3927 3907 + 3899 3879 3880 3884 3864 + 3873 3853 3851 3853 3833 + 3848 3828 3827 3829 3809 + 3829 3809 3808 3809 3789 + 3815 3795 3791 3791 3771 + 3801 3781 3775 3772 3752 + 3785 3765 3751 3746 3726 + 3767 3747 3727 3719 3699 + 3750 3730 3702 3692 3672 + 3728 3708 3680 3672 3652 + 3720 3700 3676 3665 3645 + 3712 3692 3670 3660 3645 + 3695 3675 3658 3648 3633 + 3662 3647 3629 3620 3610 + 3620 3605 3589 3580 3570 + 3562 3552 3538 3529 3519 + 3490 3480 3474 3470 3465 + 3403 3398 3388 3380 3375 + 3320 3300 3255 3221 3206 + 3000 3000 3000 3000 3000>; + }; + }; +};