From: Vikram Pandita <vikram.pandita@xxxxxx>
If the dpll is already locked, code can be optimized
to return much earlier than doing redundent set of lock mode
and wait on idlest.
Signed-off-by: Vikram Pandita <vikram.pandita@xxxxxx>
Cc: Rajendra Nayak <rnayak@xxxxxx>
---
arch/arm/mach-omap2/dpll3xxx.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index f77022b..d100391 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -135,8 +135,9 @@ static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
*/
static int _omap3_noncore_dpll_lock(struct clk *clk)
{
+ const struct dpll_data *dd;
u8 ai;
- int r;
+ int r = 0;
pr_debug("clock: locking DPLL %s\n", clk->name);
@@ -144,10 +145,16 @@ static int _omap3_noncore_dpll_lock(struct clk *clk)
omap3_dpll_deny_idle(clk);
+ dd = clk->dpll_data;
+ /* Check if already locked */
+ if ((__raw_readl(dd->idlest_reg) & dd->idlest_mask) == 1)
+ goto done;
+
_omap3_dpll_write_clken(clk, DPLL_LOCKED);
r = _omap3_wait_dpll_status(clk, 1);
+done:
if (ai)
omap3_dpll_allow_idle(clk);
--
1.7.5.4
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