SVC_I3C_MDATACTRL
mdctrl = readl(master->regs + SVC_I3C_MDATACTRL);
ret = readl_poll_timeout(master->regs + SVC_I3C_MDATACTRL,
reg = readl(master->regs + SVC_I3C_MDATACTRL);
master->regs + SVC_I3C_MDATACTRL);
writel(reg, master->regs + SVC_I3C_MDATACTRL);
writel(SVC_I3C_MDATACTRL_FLUSHRB, master->regs + SVC_I3C_MDATACTRL);
mdatactrl = readl(master->regs + SVC_I3C_MDATACTRL);