@@ -327,6 +327,33 @@
};
};
+ xoadc@197 {
+ /* Reference voltage 2.2 V */
+ xoadc-ref-supply = <&pm8058_l18>;
+
+ /* Board-specific channels */
+ mpp5 {
+ /* Connected to AOUT of ALS sensor */
+ reg = <0x05>;
+ };
+ mpp6 {
+ /* Connected to test point TP43 */
+ reg = <0x06>;
+ };
+ mpp7 {
+ /* Connected to battery thermistor */
+ reg = <0x07>;
+ };
+ mpp8 {
+ /* Connected to battery ID detector */
+ reg = <0x08>;
+ };
+ mpp9 {
+ /* Connected to XO thermistor */
+ reg = <0x09>;
+ };
+ };
+
led@48 {
/*
* The keypad LED @0x48 is routed to
@@ -63,6 +63,22 @@
};
};
+ /*
+ * These channels from the ADC are simply hardware monitors.
+ * That is why the ADC is referred to as "HKADC" - HouseKeeping
+ * ADC.
+ */
+ iio-hwmon {
+ compatible = "iio-hwmon";
+ io-channels = <&xoadc 0x01>, /* Battery */
+ <&xoadc 0x02>, /* DC in (charger) */
+ <&xoadc 0x04>, /* VPH the main system voltage */
+ <&xoadc 0x0b>, /* Die temperature */
+ <&xoadc 0x0c>, /* Reference voltage 1.25V */
+ <&xoadc 0x0d>, /* Reference voltage 0.625V */
+ <&xoadc 0x0e>; /* Reference voltage 0.325V */
+ };
+
soc: soc {
#address-cells = <1>;
#size-cells = <1>;
@@ -267,6 +283,49 @@
row-hold = <91500>;
};
+ xoadc: xoadc@197 {
+ compatible = "qcom,pm8058-adc";
+ reg = <0x197>;
+ interrupts-extended = <&pm8058 76 IRQ_TYPE_EDGE_RISING>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #io-channel-cells = <1>;
+
+ vcoin: adc-channel@0 {
+ reg = <0x00>;
+ };
+ vbat: adc-channel@1 {
+ reg = <0x01>;
+ };
+ dcin: adc-channel@2 {
+ reg = <0x02>;
+ };
+ ichg: adc-channel@3 {
+ reg = <0x03>;
+ };
+ vph_pwr: adc-channel@4 {
+ reg = <0x04>;
+ };
+ usb_vbus: adc-channel@a {
+ reg = <0x0a>;
+ };
+ die_temp: adc-channel@b {
+ reg = <0x0b>;
+ };
+ ref_625mv: adc-channel@c {
+ reg = <0x0c>;
+ };
+ ref_1250mv: adc-channel@d {
+ reg = <0x0d>;
+ };
+ ref_325mv: adc-channel@e {
+ reg = <0x0e>;
+ };
+ ref_muxoff: adc-channel@f {
+ reg = <0x0f>;
+ };
+ };
+
rtc@1e8 {
compatible = "qcom,pm8058-rtc";
reg = <0x1e8>;
This adds the PM8058 XOADC node to the PM8058 PMIC node, defines the 16 channels and further also define an IIO HWMON node for the channels that are used for housekeeping of voltages and die temperature for the PMIC chip die. Tested on the APQ8060 DragonBoard: cd /sys/class/hwmon/hwmon0 cat in2_input 4773 (DC mains ~5V) cat in4_input 625 (0.625V reference voltage) cat in5_input 1250 (1.25V reference voltage) cat temp1_input 35852 (die temperature) Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- Andy: these bindings have been merged to the IIO tree and ACKed by DT maintainers. --- arch/arm/boot/dts/qcom-apq8060-dragonboard.dts | 27 ++++++++++++ arch/arm/boot/dts/qcom-msm8660.dtsi | 59 ++++++++++++++++++++++++++ 2 files changed, 86 insertions(+) -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html