| Message ID | 08751dd65ad76558724ce4d495b2a85d7ea27ca5.1553088982.git.amit.kucheria@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [PATCHv1,1/2] arm64: dts: qcom: pms405: calibrate the VADC correctly | expand |
diff --git a/arch/arm64/boot/dts/qcom/pms405.dtsi b/arch/arm64/boot/dts/qcom/pms405.dtsi index 1bb836d1e8aa..8b6aa2334f56 100644 --- a/arch/arm64/boot/dts/qcom/pms405.dtsi +++ b/arch/arm64/boot/dts/qcom/pms405.dtsi @@ -110,16 +110,22 @@ xo_therm_100k_pu { reg = <ADC5_XO_THERM_100K_PU>; + qcom,ratiometric; + qcom,hw-settle-time = <200>; qcom,pre-scaling = <1 1>; }; amux_thm1_100k_pu { reg = <ADC5_AMUX_THM1_100K_PU>; + qcom,ratiometric; + qcom,hw-settle-time = <200>; qcom,pre-scaling = <1 1>; }; amux_thm3_100k_pu { reg = <ADC5_AMUX_THM3_100K_PU>; + qcom,ratiometric; + qcom,hw-settle-time = <200>; qcom,pre-scaling = <1 1>; }; };
Set the qcom,ratiometric property to make the VADC use the VDD reference (1.875V) and GND for channel calibration of the temperature channels instead of 1.25V. Allow a 200us delay between the AMUX configuration and ADC starting conversion using qcom,hw-settle-time as described in documentation. Fixes: 041b9a7b9fdb ("arm64: dts: pms405: Export PMIC temperature to thermal framework") Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org> --- arch/arm64/boot/dts/qcom/pms405.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.17.1