k210_register_pll
ret = k210_register_pll(np, ksc, K210_PLL0, "pll0", 1, &k210_pll_ops);
ret = k210_register_pll(np, ksc, K210_PLL1, "pll1", 1, &k210_pll_ops);
ret = k210_register_pll(np, ksc, K210_PLL2, "pll2", 3, &k210_pll2_ops);