Linux 5.1 gained support for the temperature sensor on the 32-bit Amlogic SoCs. This requires the eFuse driver and the SAR ADC driver to be enabled in the kernel config. This last bit was missing so far.
Three boards already have a iio-hwmon node defined. The driver for this is already enabled in multi_v7_defconfig: CONFIG_SENSORS_IIO_HWMON Martin Blumenstingl (1): ARM: multi_v7_defconfig: enable the Amlogic Meson ADC and eFuse drivers arch/arm/configs/multi_v7_defconfig | 2 ++ 1 file changed, 2 insertions(+) -- 2.21.0