Thread (42 messages) 42 messages, 5 authors, 2012-05-03
STALE5155d
Revisions (5)
  1. v1 [diff vs current]
  2. v3 [diff vs current]
  3. v3 [diff vs current]
  4. v3 current
  5. v3 [diff vs current]

[PATCH V3 4/8] SPEAr: clk: Add Auxiliary Synthesizer clock

From: Viresh Kumar <hidden>
Date: 2012-05-03 05:47:52
Subsystem: common clk framework, spear platform/clock/pinctrl support, the rest · Maintainers: Michael Turquette, Stephen Boyd, Viresh Kumar, Linus Torvalds

On 4/24/2012 12:20 PM, Viresh KUMAR wrote:
All SPEAr SoC's contain Auxiliary Synthesizers. Their Fout is derived based on
values of eq, x and y.

Fout from synthesizer can be given from two equations:
Fout1 = (Fin * X/Y)/2		EQ1
Fout2 = Fin * X/Y		EQ2

This patch adds in support for this type of clock.

Signed-off-by: Viresh Kumar <redacted>
Another fixup:

---
 drivers/clk/spear/clk-aux-synth.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/spear/clk-aux-synth.c b/drivers/clk/spear/clk-aux-synth.c
index c199e78..abb1747 100644
--- a/drivers/clk/spear/clk-aux-synth.c
+++ b/drivers/clk/spear/clk-aux-synth.c
@@ -56,10 +56,9 @@ static long clk_aux_round_rate(struct clk_hw *hw, unsigned long drate,
                unsigned long *prate)
 {
        struct clk_aux *aux = to_clk_aux(hw);
-       unsigned long parent_rate = __clk_get_rate(__clk_get_parent(hw->clk));
        int unused;
 
-       return clk_round_rate_index(hw, drate, parent_rate, aux_calc_rate,
+       return clk_round_rate_index(hw, drate, *prate, aux_calc_rate,
                        aux->rtbl_cnt, &unused);
 }
 
-- 
viresh
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