Hi Allen, On Thu, Apr 28, 2022 at 02:17:17PM +0800, Allen-KH Cheng wrote: > + scp: scp@10500000 { > + compatible = "mediatek,mt8186-scp"; > + reg = <0 0x10500000 0 0x40000>, > + <0 0x105c0000 0 0x19080>; > + reg-names = "sram", "cfg"; The mtk,scp dt-binding should be updated as it currently doesn't allow l1tcm to be missing. According to comments in the driver cfg is optional as well, so a patch to the binding making both optional would be great. Thanks, Nícolas