The approach is passed the test and verification on FT2004 DEV board. Thank you for your detailed analysis. I'll try again. Best Regards! ------------------ Wang Honghui ---原始邮件--- 发件人:"Krzysztof Kozlowski" 发送时间:2022年12月2日(星期五) 下午4:50 收件人:"Wang Honghui";"Catalin Marinas";"Will Deacon";"Arnd Bergmann";"Olof Johansson";"soc";"Rob Herring";"Krzysztof Kozlowski";"Sudeep Holla";"Cristian Marussi";"linux-arm-kernel";"linux-kernel";"devicetree"; 主题: [PATCH] arm64/boot/dts and arm_scpi: add to support Phytium FT2004 CPU On 0