MIPHY_BOUNDARY_SEL
writeb_relaxed(TX_SEL, base + MIPHY_BOUNDARY_SEL);
val = readb_relaxed(base + MIPHY_BOUNDARY_SEL);
writeb_relaxed(val, base + MIPHY_BOUNDARY_SEL);
val = readb_relaxed(base + MIPHY_BOUNDARY_SEL);
writeb_relaxed(val, base + MIPHY_BOUNDARY_SEL);
writeb_relaxed(val, base + MIPHY_BOUNDARY_SEL);