Hi William, thanks for your patch! On Wed, Dec 7, 2022 at 2:17 PM William Qiu <william.qiu@xxxxxxxxxxxxxxxx> wrote: > + starfive,sys-syscon = <&sys_syscon 0x14 0x1a 0x7c000000>; (...) > + starfive,sys-syscon = <&sys_syscon 0x9c 0x1 0x3e>; These are registster offsets and shifts. Don't define such stuff in your device tree, use #defines in the code and just provide the phandle. Yours, Linus Walleij