SSPCR1
val = readl(espi->mmio + SSPCR1);
writel(val, espi->mmio + SSPCR1);
val = readl(espi->mmio + SSPCR1);
writel(val, espi->mmio + SSPCR1);
val = readl(espi->mmio + SSPCR1);
writel(val, espi->mmio + SSPCR1);
val = readl(espi->mmio + SSPCR1);
writel(val, espi->mmio + SSPCR1);
writel(0, espi->mmio + SSPCR1);