M2M_CONTROL
writel(control, edmac->regs + M2M_CONTROL);
writel(control, edmac->regs + M2M_CONTROL);
writel(0, edmac->regs + M2M_CONTROL);
u32 control = readl(edmac->regs + M2M_CONTROL);
writel(control, edmac->regs + M2M_CONTROL);
writel(control, edmac->regs + M2M_CONTROL);
control = readl(edmac->regs + M2M_CONTROL);
writel(control, edmac->regs + M2M_CONTROL);
control = readl(edmac->regs + M2M_CONTROL);
writel(control, edmac->regs + M2M_CONTROL);