On Thu, Dec 21, 2023 at 02:27:13PM +0800, Jim Liu wrote: ... > > > + in_port = GPIO_BANK(gpio->nin_sgpio); > > > + if (GPIO_BIT(gpio->nin_sgpio) > 0) > > > + in_port += 1; > > > > This is strange... So, you are telling that offsets start from 1 and not 0? > > > > > + out_port = GPIO_BANK(gpio->nout_sgpio); > > > + if (GPIO_BIT(gpio->nout_sgpio) > 0) > > > + out_port += 1; > > > > Ditto. > > > Yes, if the customer has defined the in/out pins the offsets start from 1. Why? > The NPCM_IOXCFG2_PORT register is the set number of in/out ports. > NPCM_IOXCFG2_PORT register define as below: > 0~3 bit is the number of input ports > 4~7 bit is the number of output ports > Each module can support 8 input ports and 8 output ports. Right, this doesn't answer why. -- With Best Regards, Andy Shevchenko