As we migrate the AB8500 GPADC driver to use IIO, we need to augment
the bindings to account for defining the ADC channels in the device
tree.
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
ChangeLog v1->v2:
- Rebased on v5.3-rc5
---
.../devicetree/bindings/mfd/ab8500.txt | 119 ++++++++++++++++++
1 file changed, 119 insertions(+)
diff --git a/Documentation/devicetree/bindings/mfd/ab8500.txt b/Documentation/devicetree/bindings/mfd/ab8500.txt
index cd9e90c5d171..05d4b473c7c8 100644
--- a/Documentation/devicetree/bindings/mfd/ab8500.txt
+++ b/Documentation/devicetree/bindings/mfd/ab8500.txt
@@ -69,6 +69,18 @@ Required child device properties:
- compatible : "stericsson,ab8500-[bm|btemp|charger|fg|gpadc|gpio|ponkey|
pwm|regulator|rtc|sysctrl|usb]";
+ A few child devices require ADC channels from the GPADC node. Those follow the
+ standard bindings from iio/iio-bindings.txt
+
+ abx500-temp : io-channels "aux1" and "aux2" for measuring external
+ temperatures
+ ab8500_fg : io-channel "main_bat_v" for measuring main battery voltage
+ ab8500_btemp : io-channels "btemp_ball" and "bat_ctrl" for measuring the
+ battery voltage
+ ab8500_charger : io-channels "main_charger_v", "main_charger_c", "vbus_v",
+ "usb_charger_c" for measuring voltage and current of the
+ different charging supplies
+
Optional child device properties:
- interrupts : contains the device IRQ(s) using the 2-cell format (see above)
- interrupt-names : contains names of IRQ resource in the order in which they were
@@ -102,8 +114,115 @@ ab8500 {
39 0x4>;
interrupt-names = "HW_CONV_END", "SW_CONV_END";
vddadc-supply = <&ab8500_ldo_tvout_reg>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ #io-channel-cells = <1>;
+
+ /* GPADC channels */
+ bat_ctrl: adc-channel@01 {
+ reg = <0x01>;
+ };
+ btemp_ball: adc-channel@02 {
+ reg = <0x02>;
+ };
+ main_charger_v: adc-channel@03 {
+ reg = <0x03>;
+ };
+ acc_detect1: adc-channel@04 {
+ reg = <0x04>;
+ };
+ acc_detect2: adc-channel@05 {
+ reg = <0x05>;
+ };
+ adc_aux1: adc-channel@06 {
+ reg = <0x06>;
+ };
+ adc_aux2: adc-channel@07 {
+ reg = <0x07>;
+ };
+ main_batt_v: adc-channel@08 {
+ reg = <0x08>;
+ };
+ vbus_v: adc-channel@09 {
+ reg = <0x09>;
+ };
+ main_charger_c: adc-channel@0a {
+ reg = <0x0a>;
+ };
+ usb_charger_c: adc-channel@0b {
+ reg = <0x0b>;
+ };
+ bk_bat_v: adc-channel@0c {
+ reg = <0x0c>;
+ };
+ die_temp: adc-channel@0d {
+ reg = <0x0d>;
+ };
+ usb_id: adc-channel@0e {
+ reg = <0x0e>;
+ };
+ xtal_temp: adc-channel@12 {
+ reg = <0x12>;
+ };
+ vbat_true_meas: adc-channel@13 {
+ reg = <0x13>;
+ };
+ bat_ctrl_and_ibat: adc-channel@1c {
+ reg = <0x1c>;
+ };
+ vbat_meas_and_ibat: adc-channel@1d {
+ reg = <0x1d>;
+ };
+ vbat_true_meas_and_ibat: adc-channel@1e {
+ reg = <0x1e>;
+ };
+ bat_temp_and_ibat: adc-channel@1f {
+ reg = <0x1f>;
+ };
};
+ ab8500_temp {
+ compatible = "stericsson,abx500-temp";
+ io-channels = <&gpadc 0x06>,
+ <&gpadc 0x07>;
+ io-channel-name = "aux1", "aux2";
+ };
+
+ ab8500_battery: ab8500_battery {
+ stericsson,battery-type = "LIPO";
+ thermistor-on-batctrl;
+ };
+
+ ab8500_fg {
+ compatible = "stericsson,ab8500-fg";
+ battery = <&ab8500_battery>;
+ io-channels = <&gpadc 0x08>;
+ io-channel-name = "main_bat_v";
+ };
+
+ ab8500_btemp {
+ compatible = "stericsson,ab8500-btemp";
+ battery = <&ab8500_battery>;
+ io-channels = <&gpadc 0x02>,
+ <&gpadc 0x01>;
+ io-channel-name = "btemp_ball",
+ "bat_ctrl";
+ };
+
+ ab8500_charger {
+ compatible = "stericsson,ab8500-charger";
+ battery = <&ab8500_battery>;
+ vddadc-supply = <&ab8500_ldo_tvout_reg>;
+ io-channels = <&gpadc 0x03>,
+ <&gpadc 0x0a>,
+ <&gpadc 0x09>,
+ <&gpadc 0x0b>;
+ io-channel-name = "main_charger_v",
+ "main_charger_c",
+ "vbus_v",
+ "usb_charger_c";
+ };
+
ab8500-usb {
compatible = "stericsson,ab8500-usb";
interrupts = < 90 0x4
--
2.21.0
