Quoting Boris BREZILLON (2013-11-12 13:57:19)

+static const struct clk_ops pll_ops = {
+       .prepare = clk_pll_prepare,
+       .is_prepared = clk_pll_is_ready,
+       .disable = clk_pll_disable,
+       .is_enabled = clk_pll_is_ready,
+       .recalc_rate = clk_pll_recalc_rate,
+       .round_rate = clk_pll_round_rate,
+       .set_rate = clk_pll_set_rate,
+};

Hi Boris,

It is a bit strange to see only a .prepare and .disable callback
populated. What happens if a driver calls clk_disable and then
clk_enable? You clock will still be disabled in hardware.

Regards,
Mike