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authorGreg Kroah-Hartman <gregkh@suse.de>2011-12-09 16:07:37 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2011-12-09 16:07:48 -0800
commita36ae95c4e220afb976dd9d0d813d01e882b7b59 (patch)
tree5a128e3f6a5a0d29c9dfd81a116381452951318f /arch/arm/mach-omap1/clock_data.c
parentb870defebde40d01d951c9affd86c59841757c31 (diff)
parent5611cc4572e889b62a7b4c72a413536bf6a9c416 (diff)
Merge v3.2-rc4 into usb-next
This lets us handle the PS3 merge easier, as well as syncing up with other USB fixes already in the -rc4 tree. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/arm/mach-omap1/clock_data.c')
-rw-r--r--arch/arm/mach-omap1/clock_data.c53
1 files changed, 34 insertions, 19 deletions
diff --git a/arch/arm/mach-omap1/clock_data.c b/arch/arm/mach-omap1/clock_data.c
index 92400b9eb69f..1297bb58869c 100644
--- a/arch/arm/mach-omap1/clock_data.c
+++ b/arch/arm/mach-omap1/clock_data.c
@@ -767,6 +767,15 @@ static struct clk_functions omap1_clk_functions = {
.clk_disable_unused = omap1_clk_disable_unused,
};
+static void __init omap1_show_rates(void)
+{
+ pr_notice("Clocking rate (xtal/DPLL1/MPU): "
+ "%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n",
+ ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10,
+ ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10,
+ arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10);
+}
+
int __init omap1_clk_init(void)
{
struct omap_clk *c;
@@ -835,9 +844,12 @@ int __init omap1_clk_init(void)
/* We want to be in syncronous scalable mode */
omap_writew(0x1000, ARM_SYSST);
-#ifdef CONFIG_OMAP_CLOCKS_SET_BY_BOOTLOADER
- /* Use values set by bootloader. Determine PLL rate and recalculate
- * dependent clocks as if kernel had changed PLL or divisors.
+
+ /*
+ * Initially use the values set by bootloader. Determine PLL rate and
+ * recalculate dependent clocks as if kernel had changed PLL or
+ * divisors. See also omap1_clk_late_init() that can reprogram dpll1
+ * after the SRAM is initialized.
*/
{
unsigned pll_ctl_val = omap_readw(DPLL_CTL);
@@ -862,25 +874,10 @@ int __init omap1_clk_init(void)
}
}
}
-#else
- /* Find the highest supported frequency and enable it */
- if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) {
- printk(KERN_ERR "System frequencies not set. Check your config.\n");
- /* Guess sane values (60MHz) */
- omap_writew(0x2290, DPLL_CTL);
- omap_writew(cpu_is_omap7xx() ? 0x3005 : 0x1005, ARM_CKCTL);
- ck_dpll1.rate = 60000000;
- }
-#endif
propagate_rate(&ck_dpll1);
/* Cache rates for clocks connected to ck_ref (not dpll1) */
propagate_rate(&ck_ref);
- printk(KERN_INFO "Clocking rate (xtal/DPLL1/MPU): "
- "%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n",
- ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10,
- ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10,
- arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10);
-
+ omap1_show_rates();
if (machine_is_omap_perseus2() || machine_is_omap_fsample()) {
/* Select slicer output as OMAP input clock */
omap_writew(omap_readw(OMAP7XX_PCC_UPLD_CTRL) & ~0x1,
@@ -925,3 +922,21 @@ int __init omap1_clk_init(void)
return 0;
}
+
+#define OMAP1_DPLL1_SANE_VALUE 60000000
+
+void __init omap1_clk_late_init(void)
+{
+ if (ck_dpll1.rate >= OMAP1_DPLL1_SANE_VALUE)
+ return;
+
+ /* Find the highest supported frequency and enable it */
+ if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) {
+ pr_err("System frequencies not set, using default. Check your config.\n");
+ omap_writew(0x2290, DPLL_CTL);
+ omap_writew(cpu_is_omap7xx() ? 0x3005 : 0x1005, ARM_CKCTL);
+ ck_dpll1.rate = OMAP1_DPLL1_SANE_VALUE;
+ }
+ propagate_rate(&ck_dpll1);
+ omap1_show_rates();
+}