kernel: calibrate the TWD timer even when booting with only one CPU, it is used for...

Fixes booting on single-core CNS3xxx devices

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36308 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic/patches-3.8/995-mpcore_twd_calibrate_single_core.patch b/target/linux/generic/patches-3.8/995-mpcore_twd_calibrate_single_core.patch
new file mode 100644 (file)
index 0000000..bd5cf52
--- /dev/null
+++ b/target/linux/generic/patches-3.8/995-mpcore_twd_calibrate_single_core.patch
@@ -0,0 +1,23 @@
+--- a/arch/arm/kernel/smp_twd.c
++++ b/arch/arm/kernel/smp_twd.c
+@@ -189,7 +189,7 @@ core_initcall(twd_cpufreq_init);
+ 
+ #endif
+ 
+-static void __cpuinit twd_calibrate_rate(void)
++static int twd_calibrate_rate(void)
+ {
+       unsigned long count;
+       u64 waitjiffies;
+@@ -226,8 +226,11 @@ static void __cpuinit twd_calibrate_rate
+               printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
+                       (twd_timer_rate / 10000) % 100);
+       }
++      return 0;
+ }
+ 
++device_initcall(twd_calibrate_rate);
++
+ static irqreturn_t twd_handler(int irq, void *dev_id)
+ {
+       struct clock_event_device *evt = *(struct clock_event_device **)dev_id;

diff --git a/target/linux/generic/patches-3.9/995-mpcore_twd_calibrate_single_core.patch b/target/linux/generic/patches-3.9/995-mpcore_twd_calibrate_single_core.patch
new file mode 100644 (file)
index 0000000..447aaca
--- /dev/null
+++ b/target/linux/generic/patches-3.9/995-mpcore_twd_calibrate_single_core.patch
@@ -0,0 +1,23 @@
+--- a/arch/arm/kernel/smp_twd.c
++++ b/arch/arm/kernel/smp_twd.c
+@@ -186,7 +186,7 @@ core_initcall(twd_cpufreq_init);
+ 
+ #endif
+ 
+-static void __cpuinit twd_calibrate_rate(void)
++static int twd_calibrate_rate(void)
+ {
+       unsigned long count;
+       u64 waitjiffies;
+@@ -223,8 +223,11 @@ static void __cpuinit twd_calibrate_rate
+               printk("%lu.%02luMHz.\n", twd_timer_rate / 1000000,
+                       (twd_timer_rate / 10000) % 100);
+       }
++      return 0;
+ }
+ 
++device_initcall(twd_calibrate_rate);
++
+ static irqreturn_t twd_handler(int irq, void *dev_id)
+ {
+       struct clock_event_device *evt = *(struct clock_event_device **)dev_id;