unsigned long clk;
int i;
+ /*
+ * PLL may not function properly at default LDO setting.
+ *
+ * Description:
+ *
+ * In designs that enable and use the PLL module, unstable device
+ * behavior may occur with the LDO set at its default of 2.5 volts or
+ * below (minimum of 2.25 volts). Designs that do not use the PLL
+ * module are not affected.
+ *
+ * Workaround: Prior to enabling the PLL module, it is recommended that
+ * the default LDO voltage setting of 2.5 V be adjusted to 2.75 V using
+ * the LDO Power Control (LDOPCTL) register.
+ *
+ * Silicon Revision Affected: A1, A2
+ *
+ * See also: Stellaris LM3S1968 A2 Errata documentation.
+ */
+ if (REVISION_IS_A1 | REVISION_IS_A2)
+ HWREG(SYSCTL_LDOPCTL) = SYSCTL_LDOPCTL_2_75V;
+
rcc = HWREG(SYSCTL_RCC);
rcc2 = HWREG(SYSCTL_RCC2);
* \author Andrea Righi <arighi@develer.com>
*/
+#include "cfg/cfg_proc.h" /* CONFIG_KERN_PREEMPT */
+#include "switch_ctx_cm3.h"
+
#include <cfg/compiler.h>
-#include <cfg/cfg_proc.h> /* CONFIG_KERN_PREEMPT */
-#include <kern/proc_p.h>
#include <cfg/debug.h>
+
#include <cpu/attr.h> /* PAUSE */
#include <cpu/irq.h> /* IRQ_DISABLE */
#include <cpu/types.h>
+
#include <drv/irq_cm3.h>
-#include "switch_ctx_cm3.h"
+
+#include <kern/proc_p.h>
#if CPU_CM3_LM3S
#include <drv/clock_lm3s.h>
*/
IRQ_DISABLE;
-#if CPU_CM3_LM3S
- /*
- * PLL may not function properly at default LDO setting.
- *
- * Description:
- *
- * In designs that enable and use the PLL module, unstable device
- * behavior may occur with the LDO set at its default of 2.5 volts or
- * below (minimum of 2.25 volts). Designs that do not use the PLL
- * module are not affected.
- *
- * Workaround: Prior to enabling the PLL module, it is recommended that
- * the default LDO voltage setting of 2.5 V be adjusted to 2.75 V using
- * the LDO Power Control (LDOPCTL) register.
- *
- * Silicon Revision Affected: A1, A2
- *
- * See also: Stellaris LM3S1968 A2 Errata documentation.
- */
- if (REVISION_IS_A1 | REVISION_IS_A2)
- HWREG(SYSCTL_LDOPCTL) = SYSCTL_LDOPCTL_2_75V;
-#endif
/* Set the appropriate clocking configuration */
clock_init();