SPU_IRQ_ENA
tmp = readl_relaxed(ctrl->reg_base + SPU_IRQ_ENA);
writel_relaxed(tmp, ctrl->reg_base + SPU_IRQ_ENA);
imask = readl_relaxed(ctrl->reg_base + SPU_IRQ_ENA);
writel(GRA_FRAME_IRQ0_ENA(0x1), fbi->reg_base + SPU_IRQ_ENA);
writel(GRA_FRAME_IRQ0_ENA(0x0), fbi->reg_base + SPU_IRQ_ENA);