ETB_FFCR
drvdata->base + ETB_FFCR);
ffcr = readl_relaxed(drvdata->base + ETB_FFCR);
writel_relaxed(ffcr, drvdata->base + ETB_FFCR);
writel_relaxed(ffcr, drvdata->base + ETB_FFCR);
if (coresight_timeout(csa, ETB_FFCR, ETB_FFCR_BIT, 0)) {
coresight_simple_reg32(ffcr, ETB_FFCR),