Hello Hans, I am looking for bit of advice on how to handle these errors I see in the dmesg print , it starts here : [ 0.077227] pinctrl core: initialized pinctrl subsystem [ 0.079533] NET: Registered protocol family 16 [ 0.080837] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.094301] No ATAGs? [ 0.094369] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers. [ 0.094438] hw-breakpoint: maximum watchpoint size is 8 bytes. [ 0.096654] Serial: AMBA PL011 UART driver [ 0.123022] reg-fixed-voltage ahci-5v: could not find pctldev for node /soc at 01c00000/pinctrl at 01c20800/ahci_pwr_pin at 0, deferring probe [ 0.123139] reg-fixed-voltage usb0-vbus: could not find pctldev for node /soc at 01c00000/pinctrl at 01c20800/usb0_vbus_pin at 0, deferring probe [ 0.123219] reg-fixed-voltage usb1-vbus: could not find pctldev for node /soc at 01c00000/pinctrl at 01c20800/usb1_vbus_pin at 0, deferring probe [ 0.123296] reg-fixed-voltage usb2-vbus: could not find pctldev for node /soc at 01c00000/pinctrl at 01c20800/usb2_vbus_pin at 0, deferring probe [ 0.124307] reg-fixed-voltage gmac-3v3: could not find pctldev for node /soc at 01c00000/pinctrl at 01c20800/gmac_power_pin at 0, deferring probe and then continues with this bit a little later : [ 4.281094] vcc3v0: disabling [ 4.284161] vcc3v3: disabling [ 4.287152] vcc5v0: disabling [ 4.290160] ahci-5v: disabling [ 4.293252] usb0-vbus: disabling [ 4.296498] usb1-vbus: disabling [ 4.299759] usb2-vbus: disabling [ 4.303004] gmac-3v3: disabling I have been compiling my own kernels from Fedora src rpms due to the need to add in the 'b53' switch drivers . I have just used standard Fedora CONFIGs with addition of CONFIG_PHY_SUN4I_USB=y CONFIG_MFD_AXP20X=y CONFIG_AXP20X_POWER=y CONFIG_INPUT_AXP20X_PEK=y CONFIG_REGULATOR_AXP20X=y But this did not seem to make any difference . Is there something that I am missing out in config , or a patch somewhere in the dts ? Any information welcomed . Best Regards Milorad