From a133f5bc82dd3657f8f529ad95534d8e471ddd7c Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 11 Oct 2019 09:18:03 +0200 Subject: mfd: ab8500: Augment DT bindings 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. Cc: devicetree@vger.kernel.org Acked-by: Lee Jones Signed-off-by: Linus Walleij Signed-off-by: Jonathan Cameron --- Documentation/devicetree/bindings/mfd/ab8500.txt | 119 +++++++++++++++++++++++ 1 file changed, 119 insertions(+) (limited to 'Documentation/devicetree/bindings/mfd') diff --git a/Documentation/devicetree/bindings/mfd/ab8500.txt b/Documentation/devicetree/bindings/mfd/ab8500.txt index cd9e90c5d171..b6bc30d7777e 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 and iio/adc/adc.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: channel@1 { + reg = <0x01>; + }; + btemp_ball: channel@2 { + reg = <0x02>; + }; + main_charger_v: channel@3 { + reg = <0x03>; + }; + acc_detect1: channel@4 { + reg = <0x04>; + }; + acc_detect2: channel@5 { + reg = <0x05>; + }; + adc_aux1: channel@6 { + reg = <0x06>; + }; + adc_aux2: channel@7 { + reg = <0x07>; + }; + main_batt_v: channel@8 { + reg = <0x08>; + }; + vbus_v: channel@9 { + reg = <0x09>; + }; + main_charger_c: channel@a { + reg = <0x0a>; + }; + usb_charger_c: channel@b { + reg = <0x0b>; + }; + bk_bat_v: channel@c { + reg = <0x0c>; + }; + die_temp: channel@d { + reg = <0x0d>; + }; + usb_id: channel@e { + reg = <0x0e>; + }; + xtal_temp: channel@12 { + reg = <0x12>; + }; + vbat_true_meas: channel@13 { + reg = <0x13>; + }; + bat_ctrl_and_ibat: channel@1c { + reg = <0x1c>; + }; + vbat_meas_and_ibat: channel@1d { + reg = <0x1d>; + }; + vbat_true_meas_and_ibat: channel@1e { + reg = <0x1e>; + }; + bat_temp_and_ibat: 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 -- cgit