NI_CHILD_PTR
u32 reg = readl_relaxed(node->base + NI_CHILD_PTR(i));
reg = readl_relaxed(cfg.base + NI_CHILD_PTR(v));
reg = readl_relaxed(vd.base + NI_CHILD_PTR(p));
reg = readl_relaxed(cfg.base + NI_CHILD_PTR(v));
reg = readl_relaxed(vd.base + NI_CHILD_PTR(p));
reg = readl_relaxed(pd.base + NI_CHILD_PTR(c));