SDMA_H_STATSTOP
writel_relaxed(BIT(channel), sdma->regs + SDMA_H_STATSTOP);
return !!(readl(sdma->regs + SDMA_H_STATSTOP) & BIT(channel));
ret = readl_relaxed_poll_timeout_atomic(sdma->regs + SDMA_H_STATSTOP,