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

The BMC can read the RTC battery voltage via ADC
channel 12.

Signed-off-by: Matt Spinler <spinler@linux.vnet.ibm.com>
Reviewed-by: Lei YU <mine260309@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>

diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
index 656036106001ae9adddab3d710fd54d934c60e77..ad54117c075e994e00f17fcbcbe05e0785e359cd 100644 (file)
--- a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
@@ -56,6 +56,11 @@
                };
        };
 
+       iio-hwmon-battery {
+               compatible = "iio-hwmon";
+               io-channels = <&adc 12>;
+       };
+
        gpio-keys-polled {
                compatible = "gpio-keys-polled";
                #address-cells = <1>;
@@ -583,3 +588,7 @@
 &ibt {
        status = "okay";
 };
+
+&adc {
+       status = "okay";
+};