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authorTony Lindgren <tony@atomide.com>2009-05-26 14:41:35 -0700
committerTony Lindgren <tony@atomide.com>2009-05-26 14:41:35 -0700
commit88b6f7eb9b4a06fbfe27f2d98e249577f4cfdaef (patch)
tree9ef0d7ecd3e0551ca4d13ac0134aeb3ecd8558c7 /arch/arm/mach-omap2/clock34xx.c
parent8f9ccfeeb2cecb54dd093119291ab271ab0fd94a (diff)
parent7971687094ef48695aa56a0c03416b609bd4d1fd (diff)
Merge branch 'omap-clock-upstream' of git://git.pwsan.com/linux-2.6 into for-next
Diffstat (limited to 'arch/arm/mach-omap2/clock34xx.c')
-rw-r--r--arch/arm/mach-omap2/clock34xx.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index ba05aa42bd8..62021397e5f 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -281,6 +281,8 @@ static struct omap_clk omap34xx_clks[] = {
#define MAX_DPLL_WAIT_TRIES 1000000
+#define MIN_SDRC_DLL_LOCK_FREQ 83000000
+
/**
* omap3_dpll_recalc - recalculate DPLL rate
* @clk: DPLL struct clk
@@ -703,6 +705,7 @@ static int omap3_dpll4_set_rate(struct clk *clk, unsigned long rate)
static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
{
u32 new_div = 0;
+ u32 unlock_dll = 0;
unsigned long validrate, sdrcrate;
struct omap_sdrc_params *sp;
@@ -729,17 +732,22 @@ static int omap3_core_dpll_m2_set_rate(struct clk *clk, unsigned long rate)
if (!sp)
return -EINVAL;
- pr_info("clock: changing CORE DPLL rate from %lu to %lu\n", clk->rate,
- validrate);
- pr_info("clock: SDRC timing params used: %08x %08x %08x\n",
- sp->rfr_ctrl, sp->actim_ctrla, sp->actim_ctrlb);
+ if (sdrcrate < MIN_SDRC_DLL_LOCK_FREQ) {
+ pr_debug("clock: will unlock SDRC DLL\n");
+ unlock_dll = 1;
+ }
+
+ pr_debug("clock: changing CORE DPLL rate from %lu to %lu\n", clk->rate,
+ validrate);
+ pr_debug("clock: SDRC timing params used: %08x %08x %08x\n",
+ sp->rfr_ctrl, sp->actim_ctrla, sp->actim_ctrlb);
/* REVISIT: SRAM code doesn't support other M2 divisors yet */
WARN_ON(new_div != 1 && new_div != 2);
/* REVISIT: Add SDRC_MR changing to this code also */
omap3_configure_core_dpll(sp->rfr_ctrl, sp->actim_ctrla,
- sp->actim_ctrlb, new_div);
+ sp->actim_ctrlb, new_div, unlock_dll);
return 0;
}
@@ -956,7 +964,7 @@ int __init omap2_clk_init(void)
clk_init(&omap2_clk_functions);
for (c = omap34xx_clks; c < omap34xx_clks + ARRAY_SIZE(omap34xx_clks); c++)
- clk_init_one(c->lk.clk);
+ clk_preinit(c->lk.clk);
for (c = omap34xx_clks; c < omap34xx_clks + ARRAY_SIZE(omap34xx_clks); c++)
if (c->cpu & cpu_clkflg) {