Dear, I'm developing on nordic 52840 with ncs2.6.1.
I found that the Current will reach to 600+uA in k_sleep state by enable SPI in device_tree and if i disable the spi, the current will increase to 100uA.
I have try to enable CONFIG_PM_DEVICE(As far as i know that CONFIG_PM is not support by nrf52840 in ncs2.6.1) and call the function