On 09/12/2022 01:54, Billy Tsai wrote: > > > However I am surprised to see such change, so I have no clue why this > > > was done. > > > Actually now I see it was like that in previous patch, I just missed it > > during previous review. Anyway this must be fixed. > > I have two module (PWM and TACH) but share with the same base address, > The PWM will use the offset (N*0x10) + 0x0 and 0x04. > The TACH will use the offset (N*0x10) + 0x8 and 0x0c. > The range of the N is 0~15. > Can you give me some advice to fix this problem without using simple-mfd? Use regular driver which populates children. Best regards, Krzysztof