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arm64: dts: qcom: pms405: calibrate the VADC correctly

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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: 041b9a7b9f ("arm64: dts: pms405: Export PMIC temperature to thermal framework")
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <agross@kernel.org>
This commit is contained in:
Amit Kucheria 2019-03-20 19:09:57 +05:30 committed by Andy Gross
parent 14d27be152
commit 7c2d4811d1
1 changed files with 6 additions and 0 deletions
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6
arch/arm64/boot/dts/qcom/pms405.dtsi
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@ -110,16 +110,22 @@ die_temp {
xo_therm_100k_pu { xo_therm_100k_pu {
reg = <ADC5_XO_THERM_100K_PU>; reg = <ADC5_XO_THERM_100K_PU>;
qcom,ratiometric;
qcom,hw-settle-time = <200>;
qcom,pre-scaling = <1 1>; qcom,pre-scaling = <1 1>;
}; };
amux_thm1_100k_pu { amux_thm1_100k_pu {
reg = <ADC5_AMUX_THM1_100K_PU>; reg = <ADC5_AMUX_THM1_100K_PU>;
qcom,ratiometric;
qcom,hw-settle-time = <200>;
qcom,pre-scaling = <1 1>; qcom,pre-scaling = <1 1>;
}; };
amux_thm3_100k_pu { amux_thm3_100k_pu {
reg = <ADC5_AMUX_THM3_100K_PU>; reg = <ADC5_AMUX_THM3_100K_PU>;
qcom,ratiometric;
qcom,hw-settle-time = <200>;
qcom,pre-scaling = <1 1>; qcom,pre-scaling = <1 1>;
}; };
}; };