ARM: dts: aspeed: romulus: Enable iio-hwmon-battery

Add iio-hwmon-battery using adc channel 12;
Pull GPIOR3 high to enable RTC_ADC;
Enable adc to make adc running.

Signed-off-by Lei YU <[email protected]>

---
 arch/arm/boot/dts/aspeed-bmc-opp-romulus.dts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

arch/arm/boot/dts/aspeed-bmc-opp-romulus.dts +15 -1

index 852b552..461564c 100644
@@ -83,6 +83,11 @@
                        linux,code = <ASPEED_GPIO(Q, 7)>;
                };
        };
+
+       iio-hwmon-battery {
+               compatible = "iio-hwmon";
+               io-channels = <&adc 12>;
+       };
 };
 
 #include "ibm-power9-cfam.dtsi"

@@ -236,6 +241,12 @@
                output-low;
                line-name = "seq_cont";
        };
+       rtc_adc_en {
+               gpio-hog;
+               gpios = <ASPEED_GPIO(R, 3) GPIO_ACTIVE_HIGH>;
+               output-high;
+               line-name = "rtc_adc_en";
+       };
 };
 
 &vuart {

@@ -304,3 +315,7 @@
        status = "okay";
 };
 
+&adc {
+       status = "okay";
+};
+
--

2.7.4