REF_CLK
return priv->dynamic_mode ? CLK_IN : REF_CLK;
parent_names[REF_CLK] = __clk_get_name(priv->ref_clk);
SERVALT_P(12, REF_CLK, SFP, TWI_SCL_M);
SERVALT_P(13, REF_CLK, SFP, TWI_SCL_M);
SERVALT_P(14, REF_CLK, IRQ0_OUT, SI);
SERVALT_P(15, REF_CLK, IRQ1_OUT, SI);