rk_cru_arm_set_parent
int rk_cru_arm_set_parent(struct rk_cru_softc *, struct rk_cru_clk *, const char *);
.set_parent = rk_cru_arm_set_parent, \
.set_parent = rk_cru_arm_set_parent
rk_cru_arm_set_parent(sc, clk, arm->parents[arm->mux_main]);
error = rk_cru_arm_set_parent(sc, clk, arm->parents[arm->mux_alt]);
rk_cru_arm_set_parent(sc, clk, arm->parents[arm->mux_main]);
error = rk_cru_arm_set_parent(sc, clk, arm->parents[arm->mux_alt]);