Call xxx_timer_initialize from clock subsystem

Call xxx_timer_initialize from clock subsystem to make timer ready for use as soon as possiblei and revert the workaround:

commit 0863e771a9
Author: Gregory Nutt <gnutt@nuttx.org>
Date:   Fri Apr 26 07:24:57 2019 -0600

    Revert "sched/clock/clock_initialize.c:  clock_inittime() needs to be done with CONFIG_SCHED_TICKLESS and clock_initialize should skip clock_inittime() for external RTC case since the RTC isn't ready yet."

    This reverts commit 2bc709d4b9.

    Commit 2bc709d4b9 was intended to handle the case where up_timer_gettime may not start from zero case.  However, this change has the side-effect of breaking every implementation of tickless mode:  After this change the tickless timer structures are used before they are initialized in clock_inittime().  Initialization happens later when up_initialize is called() when arm_timer_initialize().

    Since the tickless mode timer is very special, one solution might be to

    1. Rename xxx_timer_initialize to up_timer_initialize
    2  Move up_timer_initialize to include/nuttx/arch.h
    3.  Call it from clock subsystem instead up_initialize

    Basically, this change make timer initialization almost same as rtc initialization(up_rtc_initialize).

    For now, however, we just need to revert the change.

arch/arm/src/a1x/a1x_timerisr.c

@@ -103,7 +103,7 @@ static int a1x_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -111,7 +111,7 @@ static int a1x_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/am335x/am335x_timerisr.c

@@ -117,7 +117,7 @@ static int am335x_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -125,7 +125,7 @@ static int am335x_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/c5471/c5471_timerisr.c

@@ -95,7 +95,7 @@ static int c5471_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -103,7 +103,7 @@ static int c5471_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t val;
 

arch/arm/src/common/up_initialize.c

@@ -127,13 +127,6 @@ void up_initialize(void)
 
   up_addregion();
 
-  /* Initialize the system timer interrupt */
-
-#if !defined(CONFIG_SUPPRESS_INTERRUPTS) && !defined(CONFIG_SUPPRESS_TIMER_INTS) && \
-    !defined(CONFIG_SYSTEMTICK_EXTCLK)
-  arm_timer_initialize();
-#endif
-
 #ifdef CONFIG_PM
   /* Initialize the power management subsystem.  This MCU-specific function
    * must be called *very* early in the initialization sequence *before* any

arch/arm/src/common/up_internal.h

@@ -429,10 +429,6 @@ void up_restorefpu(const uint32_t *regs);
 #  define up_restorefpu(regs)
 #endif
 
-/* System timer *************************************************************/
-
-void arm_timer_initialize(void);
-
 /* Low level serial output **************************************************/
 
 void up_lowputc(char ch);

arch/arm/src/cxd56xx/cxd56_timerisr.c

@@ -160,7 +160,7 @@ static int cxd56_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/dm320/dm320_timerisr.c

@@ -122,7 +122,7 @@ static int dm320_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -130,7 +130,7 @@ static int dm320_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   up_disable_irq(DM320_IRQ_SYSTIMER);
 

arch/arm/src/efm32/efm32_timerisr.c

@@ -99,7 +99,7 @@ static int efm32_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -107,7 +107,7 @@ static int efm32_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/imx1/imx_timerisr.c

@@ -92,7 +92,7 @@ static int imx_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -100,7 +100,7 @@ static int imx_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t tctl;
 

arch/arm/src/imx6/imx_timerisr.c

@@ -153,7 +153,7 @@ static int imx_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -161,7 +161,7 @@ static int imx_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
   uint32_t cr;

arch/arm/src/imxrt/imxrt_timerisr.c

@@ -198,7 +198,7 @@ static void up_pm_notify(struct pm_callback_s *cb, int domain,
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -206,7 +206,7 @@ static void up_pm_notify(struct pm_callback_s *cb, int domain,
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 #ifdef CONFIG_PM

arch/arm/src/kinetis/kinetis_timerisr.c

@@ -103,7 +103,7 @@ static int kinetis_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -111,7 +111,7 @@ static int kinetis_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/kl/kl_timerisr.c

@@ -118,7 +118,7 @@ static int kl_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -126,7 +126,7 @@ static int kl_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/lc823450/lc823450_timer.c

@@ -470,10 +470,10 @@ static uint64_t up_get_timer_fraction(void)
 }
 
 /****************************************************************************
- * Name: arm_timer_initialize
+ * Name: up_timer_initialize
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
 #ifdef CHECK_INTERVAL
   lc823450_gpio_config(TIMER_PIN |

arch/arm/src/lpc17xx_40xx/lpc17_40_timerisr.c

@@ -104,7 +104,7 @@ static int lpc17_40_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -112,7 +112,7 @@ static int lpc17_40_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/lpc214x/lpc214x_timerisr.c

@@ -111,7 +111,7 @@ static int lpc214x_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -119,7 +119,7 @@ static int lpc214x_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint16_t mcr;
 

arch/arm/src/lpc2378/lpc23xx_timerisr.c

@@ -134,7 +134,7 @@ static int lpc23xx_timerisr(int irq, uint32_t * regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -142,7 +142,7 @@ static int lpc23xx_timerisr(int irq, uint32_t * regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint16_t mcr;
 

arch/arm/src/lpc31xx/lpc31_timerisr.c

@@ -85,7 +85,7 @@ static int lpc31_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -93,7 +93,7 @@ static int lpc31_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
   uint64_t load;

arch/arm/src/lpc43xx/lpc43_rit.c

@@ -154,7 +154,7 @@ static inline void lpc43_RIT_timer_stop(void)
  * Public Functions
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t ticks_per_int;
   uint32_t mask_bits = 0;

arch/arm/src/lpc43xx/lpc43_tickless_rit.c

@@ -595,7 +595,7 @@ static int lpc43_tl_isr(int irq, FAR void *context, FAR void *arg)
  * Public Functions
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   irqstate_t flags;
   flags = enter_critical_section();

arch/arm/src/lpc43xx/lpc43_timerisr.c

@@ -103,7 +103,7 @@ static int lpc43_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -111,7 +111,7 @@ static int lpc43_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/lpc54xx/lpc54_tickless.c

@@ -625,7 +625,7 @@ static int lpc54_tl_isr(int irq, FAR void *context, FAR void *arg)
  * Public Functions
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   irqstate_t flags;
   flags = enter_critical_section();

arch/arm/src/lpc54xx/lpc54_timerisr.c

@@ -115,7 +115,7 @@ static int lpc54_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -123,7 +123,7 @@ static int lpc54_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/max326xx/common/max326_timerisr.c

@@ -102,7 +102,7 @@ static int max326_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -110,7 +110,7 @@ static int max326_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/moxart/moxart_timer.c

@@ -121,7 +121,7 @@ static int moxart_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   Setup MoxaRT timer 0 to cause system ticks.
@@ -131,7 +131,7 @@ static int moxart_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t tmp;
 

arch/arm/src/nrf52/nrf52_timerisr.c

@@ -113,7 +113,7 @@ static int nrf52_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -121,7 +121,7 @@ static int nrf52_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/nuc1xx/nuc_timerisr.c

@@ -169,7 +169,7 @@ static int nuc_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -177,7 +177,7 @@ static int nuc_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/s32k1xx/s32k11x/s32k11x_timerisr.c

@@ -105,7 +105,7 @@ static int s32k11x_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -113,7 +113,7 @@ static int s32k11x_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t coreclk;
   uint32_t reload;

arch/arm/src/s32k1xx/s32k14x/s32k14x_timerisr.c

@@ -99,7 +99,7 @@ static int s32k14x_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -107,7 +107,7 @@ static int s32k14x_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t coreclk;
   uint32_t reload;

arch/arm/src/sam34/sam4cm_tickless.c

@@ -39,7 +39,7 @@
  * is suppressed and the platform specific code is expected to provide the
  * following custom functions.
  *
- *   void arm_timer_initialize(void): Initializes the timer facilities.  Called
+ *   void up_timer_initialize(void): Initializes the timer facilities.  Called
  *     early in the initialization sequence (by up_initialize()).
  *   int up_timer_gettime(FAR struct timespec *ts):  Returns the current
  *     time from the platform specific time source.
@@ -206,7 +206,7 @@ static void sam_oneshot_handler(void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: arm_timer_initialize
+ * Name: up_timer_initialize
  *
  * Description:
  *   Initializes all platform-specific timer facilities.  This function is
@@ -230,7 +230,7 @@ static void sam_oneshot_handler(void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
 #ifdef CONFIG_SCHED_TICKLESS_LIMIT_MAX_SLEEP
   uint64_t max_delay;
@@ -292,7 +292,7 @@ void arm_timer_initialize(void)
  *
  * Description:
  *   Return the elapsed time since power-up (or, more correctly, since
- *   arm_timer_initialize() was called).  This function is functionally
+ *   up_timer_initialize() was called).  This function is functionally
  *   equivalent to:
  *
  *      int clock_gettime(clockid_t clockid, FAR struct timespec *ts);

arch/arm/src/sam34/sam_timerisr.c

@@ -125,7 +125,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -133,7 +133,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/sama5/sam_tickless.c

@@ -39,7 +39,7 @@
  * is suppressed and the platform specific code is expected to provide the
  * following custom functions.
  *
- *   void arm_timer_initialize(void): Initializes the timer facilities.  Called
+ *   void up_timer_initialize(void): Initializes the timer facilities.  Called
  *     early in the initialization sequence (by up_initialize()).
  *   int up_timer_gettime(FAR struct timespec *ts):  Returns the current
  *     time from the platform specific time source.
@@ -218,7 +218,7 @@ static void sam_oneshot_handler(void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: arm_timer_initialize
+ * Name: up_timer_initialize
  *
  * Description:
  *   Initializes all platform-specific timer facilities.  This function is
@@ -242,7 +242,7 @@ static void sam_oneshot_handler(void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
 #ifdef CONFIG_SCHED_TICKLESS_LIMIT_MAX_SLEEP
   uint64_t max_delay;
@@ -304,7 +304,7 @@ void arm_timer_initialize(void)
  *
  * Description:
  *   Return the elapsed time since power-up (or, more correctly, since
- *   arm_timer_initialize() was called).  This function is functionally
+ *   up_timer_initialize() was called).  This function is functionally
  *   equivalent to:
  *
  *      int clock_gettime(clockid_t clockid, FAR struct timespec *ts);

arch/arm/src/sama5/sam_timerisr.c

@@ -114,7 +114,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -122,7 +122,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/samd2l2/sam_timerisr.c

@@ -108,7 +108,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -116,7 +116,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/samd5e5/sam_timerisr.c

@@ -103,7 +103,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -111,7 +111,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/samv7/sam_tickless.c

@@ -39,7 +39,7 @@
  * is suppressed and the platform specific code is expected to provide the
  * following custom functions.
  *
- *   void arm_timer_initialize(void): Initializes the timer facilities.  Called
+ *   void up_timer_initialize(void): Initializes the timer facilities.  Called
  *     early in the initialization sequence (by up_initialize()).
  *   int up_timer_gettime(FAR struct timespec *ts):  Returns the current
  *     time from the platform specific time source.
@@ -230,7 +230,7 @@ static void sam_oneshot_handler(void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: arm_timer_initialize
+ * Name: up_timer_initialize
  *
  * Description:
  *   Initializes all platform-specific timer facilities.  This function is
@@ -254,7 +254,7 @@ static void sam_oneshot_handler(void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   int ret;
 
@@ -290,7 +290,7 @@ void arm_timer_initialize(void)
  *
  * Description:
  *   Return the elapsed time since power-up (or, more correctly, since
- *   arm_timer_initialize() was called).  This function is functionally
+ *   up_timer_initialize() was called).  This function is functionally
  *   equivalent to:
  *
  *      int clock_gettime(clockid_t clockid, FAR struct timespec *ts);

arch/arm/src/samv7/sam_timerisr.c

@@ -111,7 +111,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -119,7 +119,7 @@ static int sam_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/stm32/stm32_tickless.c

@@ -41,7 +41,7 @@
  * is suppressed and the platform specific code is expected to provide the
  * following custom functions.
  *
- *   void arm_timer_initialize(void): Initializes the timer facilities.
+ *   void up_timer_initialize(void): Initializes the timer facilities.
  *     Called early in the initialization sequence (by up_initialize()).
  *   int up_timer_gettime(FAR struct timespec *ts):  Returns the current
  *     time from the platform specific time source.
@@ -385,7 +385,7 @@ static int stm32_tickless_handler(int irq, void *context, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: arm_timer_initialize
+ * Name: up_timer_initialize
  *
  * Description:
  *   Initializes all platform-specific timer facilities.  This function is
@@ -409,7 +409,7 @@ static int stm32_tickless_handler(int irq, void *context, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   switch (CONFIG_STM32_TICKLESS_TIMER)
     {
@@ -590,7 +590,7 @@ void arm_timer_initialize(void)
  *
  * Description:
  *   Return the elapsed time since power-up (or, more correctly, since
- *   arm_timer_initialize() was called).  This function is functionally
+ *   up_timer_initialize() was called).  This function is functionally
  *   equivalent to:
  *
  *      int clock_gettime(clockid_t clockid, FAR struct timespec *ts);

arch/arm/src/stm32/stm32_timerisr.c

@@ -111,7 +111,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -119,7 +119,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/stm32f0l0g0/stm32_timerisr.c

@@ -120,7 +120,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -128,7 +128,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/stm32f7/stm32_tickless.c

@@ -41,7 +41,7 @@
  * is suppressed and the platform specific code is expected to provide the
  * following custom functions.
  *
- *   void arm_timer_initialize(void): Initializes the timer facilities.
+ *   void up_timer_initialize(void): Initializes the timer facilities.
  *     Called early in the initialization sequence (by up_initialize()).
  *   int up_timer_gettime(FAR struct timespec *ts):  Returns the current
  *     time from the platform specific time source.
@@ -398,7 +398,7 @@ static int stm32_tickless_handler(int irq, void *context, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: arm_timer_initialize
+ * Name: up_timer_initialize
  *
  * Description:
  *   Initializes all platform-specific timer facilities.  This function is
@@ -422,7 +422,7 @@ static int stm32_tickless_handler(int irq, void *context, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   switch (CONFIG_STM32F7_TICKLESS_TIMER)
     {
@@ -604,7 +604,7 @@ void arm_timer_initialize(void)
  *
  * Description:
  *   Return the elapsed time since power-up (or, more correctly, since
- *   arm_timer_initialize() was called).  This function is functionally
+ *   up_timer_initialize() was called).  This function is functionally
  *   equivalent to:
  *
  *      int clock_gettime(clockid_t clockid, FAR struct timespec *ts);

arch/arm/src/stm32f7/stm32_timerisr.c

@@ -117,7 +117,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -125,7 +125,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/stm32h7/stm32_timerisr.c

@@ -140,7 +140,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -148,7 +148,7 @@ static int stm32_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/stm32l4/stm32l4_tickless.c

@@ -40,7 +40,7 @@
  * is suppressed and the platform specific code is expected to provide the
  * following custom functions.
  *
- *   void arm_timer_initialize(void): Initializes the timer facilities.
+ *   void up_timer_initialize(void): Initializes the timer facilities.
  *     Called early in the initialization sequence (by up_initialize()).
  *   int up_timer_gettime(FAR struct timespec *ts):  Returns the current
  *     time from the platform specific time source.
@@ -163,7 +163,7 @@ static void stm32l4_oneshot_handler(FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Name: arm_timer_initialize
+ * Name: up_timer_initialize
  *
  * Description:
  *   Initializes all platform-specific timer facilities.  This function is
@@ -187,7 +187,7 @@ static void stm32l4_oneshot_handler(FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
 #ifdef CONFIG_SCHED_TICKLESS_LIMIT_MAX_SLEEP
   uint64_t max_delay;
@@ -245,7 +245,7 @@ void arm_timer_initialize(void)
  *
  * Description:
  *   Return the elapsed time since power-up (or, more correctly, since
- *   arm_timer_initialize() was called).  This function is functionally
+ *   up_timer_initialize() was called).  This function is functionally
  *   equivalent to:
  *
  *      int clock_gettime(clockid_t clockid, FAR struct timespec *ts);

arch/arm/src/stm32l4/stm32l4_timerisr.c

@@ -111,7 +111,7 @@ static int stm32l4_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -119,7 +119,7 @@ static int stm32l4_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/str71x/str71x_timerisr.c

@@ -146,7 +146,7 @@ static int str71x_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -154,7 +154,7 @@ static int str71x_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   irqstate_t flags;
 

arch/arm/src/tiva/common/tiva_timerisr.c

@@ -101,7 +101,7 @@ static int tiva_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -109,7 +109,7 @@ static int tiva_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/arm/src/tms570/tms570_timerisr.c

@@ -147,7 +147,7 @@ static int tms570_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Name:  arm_timer_initialize
+ * Name:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -155,7 +155,7 @@ static int tms570_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   /* Disable all RTI interrupts */
 

arch/arm/src/xmc4/xmc4_timerisr.c

@@ -120,7 +120,7 @@ static int xmc4_timerisr(int irq, uint32_t *regs, FAR void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  arm_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize
@@ -128,7 +128,7 @@ static int xmc4_timerisr(int irq, uint32_t *regs, FAR void *arg)
  *
  ****************************************************************************/
 
-void arm_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;
 

arch/avr/src/at32uc3/at32uc3_timerisr.c

@@ -174,7 +174,7 @@ static int at32uc3_timerisr(int irq, uint32_t *regs, void *arg)
  ****************************************************************************/
 
 /****************************************************************************
- * Function:  avr_timer_initialize
+ * Function:  up_timer_initialize
  *
  * Description:
  *   This function is called during start-up to initialize the timer
@@ -183,7 +183,7 @@ static int at32uc3_timerisr(int irq, uint32_t *regs, void *arg)
  *
  ****************************************************************************/
 
-void avr_timer_initialize(void)
+void up_timer_initialize(void)
 {
   uint32_t regval;