axi_iowrite
axi_iowrite(temp, attr->index, ctl);
axi_iowrite(new_width, ADI_REG_PWM_WIDTH, ctl);
axi_iowrite(new_tach, ADI_REG_TACH_PERIOD, ctl);
axi_iowrite(tach_tol, ADI_REG_TACH_TOLERANCE, ctl);
axi_iowrite(clear_mask, ADI_REG_IRQ_PENDING, ctl);
axi_iowrite(ADI_IRQ_MASK_OUT_ALL &
axi_iowrite(0x01, ADI_REG_RSTN, ctl);