From: viresh.kumar@st•com (Viresh Kumar)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH V3 4/8] SPEAr: clk: Add Auxiliary Synthesizer clock
Date: Fri, 27 Apr 2012 10:15:20 +0530 [thread overview]
Message-ID: <4F9A2460.50607@st.com> (raw)
In-Reply-To: <73afd5e86c8311a04c5d2d21419e3eaa45eafec4.1335249846.git.viresh.kumar@st.com>
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 <viresh.kumar@st•com>
fixup! SPEAr: clk: Add Auxiliary Synthesizer clock
---
drivers/clk/spear/clk-aux-synth.c | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/spear/clk-aux-synth.c b/drivers/clk/spear/clk-aux-synth.c
index e01a350..c199e78 100644
--- a/drivers/clk/spear/clk-aux-synth.c
+++ b/drivers/clk/spear/clk-aux-synth.c
@@ -56,10 +56,11 @@ 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, aux_calc_rate, aux->rtbl_cnt,
- &unused);
+ return clk_round_rate_index(hw, drate, parent_rate, aux_calc_rate,
+ aux->rtbl_cnt, &unused);
}
static unsigned long clk_aux_recalc_rate(struct clk_hw *hw,
@@ -96,14 +97,16 @@ static unsigned long clk_aux_recalc_rate(struct clk_hw *hw,
}
/* Configures new clock rate of aux */
-static int clk_aux_set_rate(struct clk_hw *hw, unsigned long drate)
+static int clk_aux_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
{
struct clk_aux *aux = to_clk_aux(hw);
struct aux_rate_tbl *rtbl = aux->rtbl;
unsigned long val, flags = 0;
int i;
- clk_round_rate_index(hw, drate, aux_calc_rate, aux->rtbl_cnt, &i);
+ clk_round_rate_index(hw, drate, prate, aux_calc_rate, aux->rtbl_cnt,
+ &i);
if (aux->lock)
spin_lock_irqsave(aux->lock, flags);
--
viresh
next prev parent reply other threads:[~2012-04-27 4:45 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-24 6:50 [PATCH V3 0/8] SPEAr: Move to common clock framework Viresh Kumar
2012-04-24 6:50 ` [PATCH V3 1/8] CLKDEV: Add helper routines to allocate and add clkdevs for given struct clk * Viresh Kumar
2012-04-26 7:47 ` Russell King - ARM Linux
2012-04-26 10:28 ` Viresh Kumar
2012-04-28 9:52 ` Russell King - ARM Linux
2012-04-28 11:01 ` Sascha Hauer
2012-04-28 11:06 ` Russell King - ARM Linux
2012-05-01 8:45 ` Viresh Kumar
2012-05-01 12:31 ` Shawn Guo
2012-05-02 9:54 ` Russell King - ARM Linux
2012-05-02 13:59 ` Shawn Guo
2012-05-02 14:13 ` Russell King - ARM Linux
2012-04-30 8:08 ` Viresh Kumar
2012-04-24 6:50 ` [PATCH V3 2/8] clk: add a fixed factor clock Viresh Kumar
2012-04-27 4:43 ` Viresh Kumar
2012-05-02 9:48 ` Sascha Hauer
2012-05-02 11:56 ` Viresh Kumar
2012-05-02 22:41 ` Mike Turquette
2012-05-02 22:44 ` Mike Turquette
2012-05-02 23:31 ` Russell King - ARM Linux
2012-05-03 5:32 ` Viresh Kumar
2012-05-03 6:37 ` Sascha Hauer
2012-05-03 9:48 ` Viresh Kumar
2012-04-24 6:50 ` [PATCH V3 3/8] SPEAr: clk: Add VCO-PLL Synthesizer clock Viresh Kumar
2012-04-27 4:44 ` Viresh Kumar
2012-05-03 5:47 ` Viresh Kumar
2012-05-03 9:49 ` Viresh Kumar
2012-04-24 6:50 ` [PATCH V3 4/8] SPEAr: clk: Add Auxiliary " Viresh Kumar
2012-04-27 4:45 ` Viresh Kumar [this message]
2012-05-03 5:47 ` Viresh Kumar
2012-05-03 9:50 ` Viresh Kumar
2012-04-24 6:50 ` [PATCH V3 5/8] SPEAr: clk: Add Fractional " Viresh Kumar
2012-04-27 4:45 ` Viresh Kumar
2012-05-03 5:46 ` Viresh Kumar
2012-05-03 9:51 ` Viresh Kumar
2012-04-24 6:50 ` [PATCH V3 6/8] SPEAr: clk: Add General Purpose Timer " Viresh Kumar
2012-04-27 4:46 ` Viresh Kumar
2012-05-03 5:43 ` Viresh Kumar
2012-05-03 9:51 ` Viresh Kumar
2012-04-24 6:50 ` [PATCH V3 7/8] SPEAr: Call clk_prepare() before calling clk_enable Viresh Kumar
2012-04-27 4:42 ` [PATCH V3 0/8] SPEAr: Move to common clock framework Viresh Kumar
2012-04-27 17:50 ` Turquette, Mike
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