XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN
value &= ~XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(index);
value |= XUSB_PADCTL_ELPG_PROGRAM_SSPX_ELPG_CLAMP_EN(port->index);