sh: clkfwk: Support multi-level clock propagation.

Currently clock propagation only works for one level, but we have some
clocks which need to propagate multiple levels, so make this recursive.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index 92807ffa8e20..b5f1e23ed57c 100644
--- a/arch/sh/kernel/cpu/clock.c
+++ b/arch/sh/kernel/cpu/clock.c
@@ -83,6 +83,8 @@ static void propagate_rate(struct clk *clk)
                         continue;
                 if (likely(clkp->ops && clkp->ops->recalc))
                         clkp->ops->recalc(clkp);
+                if (unlikely(clkp->flags & CLK_RATE_PROPAGATES))
+                        propagate_rate(clkp);
         }
 }