GI2CCTL
i2cctl = dwc2_readl(hsotg, GI2CCTL);
dwc2_writel(hsotg, i2cctl, GI2CCTL);
dwc2_writel(hsotg, i2cctl, GI2CCTL);
gr->gi2cctl = dwc2_readl(hsotg, GI2CCTL);
addr = hsotg->regs + GI2CCTL;
(unsigned long)addr, dwc2_readl(hsotg, GI2CCTL));
dwc2_writel(hsotg, gr->gi2cctl, GI2CCTL);
dump_register(GI2CCTL),