From: viresh.kumar@st•com (Viresh Kumar)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH V3 3/8] SPEAr: clk: Add VCO-PLL Synthesizer clock
Date: Thu, 3 May 2012 15:19:47 +0530 [thread overview]
Message-ID: <4FA254BB.5050308@st.com> (raw)
In-Reply-To: <bc76d68ff5c11be5750c6e65ce5c4b94bb9f7382.1335249846.git.viresh.kumar@st.com>
On 4/24/2012 12:20 PM, Viresh KUMAR wrote:
> All SPEAr SoC's contain PLLs. Their Fout is derived based on following equations
>
> - In normal mode
> vco = (2 * M[15:8] * Fin)/N
>
> - In Dithered mode
> vco = (2 * M[15:0] * Fin)/(256 * N)
>
> pll_rate = vco/2^p
>
> vco and pll are very closely bound to each other,
> "vco needs to program: mode, m & n" and "pll needs to program p",
> both share common enable/disable logic and registers.
>
> This patch adds in support for this type of clock.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@st•com>
> ---
Sorry for another fixup. Required due to Saravana's patch:
---
drivers/clk/spear/clk-vco-pll.c | 22 ++++++++++++++++++----
1 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/spear/clk-vco-pll.c b/drivers/clk/spear/clk-vco-pll.c
index 318b04e..dcd4bdf 100644
--- a/drivers/clk/spear/clk-vco-pll.c
+++ b/drivers/clk/spear/clk-vco-pll.c
@@ -282,6 +282,7 @@ struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
struct clk_vco *vco;
struct clk_pll *pll;
struct clk *vco_clk, *tpll_clk, *tvco_gate_clk;
+ struct clk_init_data vco_init, pll_init;
const char **vco_parent_name;
if (!vco_name || !pll_name || !parent_name || !mode_reg || !cfg_reg ||
@@ -308,7 +309,10 @@ struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
vco->rtbl = rtbl;
vco->rtbl_cnt = rtbl_cnt;
vco->lock = lock;
+ vco->hw.init = &vco_init;
+
pll->vco = vco;
+ pll->hw.init = &pll_init;
if (vco_gate_name) {
tvco_gate_clk = clk_register_gate(NULL, vco_gate_name,
@@ -323,13 +327,23 @@ struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
vco_parent_name = &parent_name;
}
- vco_clk = clk_register(NULL, vco_name, &clk_vco_ops, &vco->hw,
- vco_parent_name, 1, flags);
+ vco_init.name = vco_name;
+ vco_init.ops = &clk_vco_ops;
+ vco_init.flags = flags;
+ vco_init.parent_names = vco_parent_name;
+ vco_init.num_parents = 1;
+
+ pll_init.name = pll_name;
+ pll_init.ops = &clk_pll_ops;
+ pll_init.flags = CLK_SET_RATE_PARENT;
+ pll_init.parent_names = &vco_name;
+ pll_init.num_parents = 1;
--
viresh
next prev parent reply other threads:[~2012-05-03 9:49 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 [this message]
2012-04-24 6:50 ` [PATCH V3 4/8] SPEAr: clk: Add Auxiliary " Viresh Kumar
2012-04-27 4:45 ` Viresh Kumar
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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