Merge 'u-boot-microblaze/zynq' into (u-boot-arm/master'

[u-boot] / arch / arm / cpu / armv7 / highbank / timer.c

diff --git a/arch/arm/cpu/armv7/highbank/timer.c b/arch/arm/cpu/armv7/highbank/timer.c
index d92503f75126f81ac14fde2179e188133681d66c..b61cd69bc61b3cebb3f2a821b322a1bac6da6a8a 100644 (file)
--- a/arch/arm/cpu/armv7/highbank/timer.c
+++ b/arch/arm/cpu/armv7/highbank/timer.c
@@ -3,18 +3,7 @@
  *
  * Based on arm926ejs/mx27/timer.c
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
+ * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -26,7 +15,7 @@
 
 #undef SYSTIMER_BASE
 #define SYSTIMER_BASE          0xFFF34000      /* Timer 0 and 1 base   */
-#define SYSTIMER_RATE          150000000
+#define SYSTIMER_RATE          (150000000 / 256)
 
 static ulong timestamp;
 static ulong lastinc;
@@ -40,11 +29,11 @@ int timer_init(void)
        /*
         * Setup timer0
         */
+       writel(0, &systimer_base->timer0control);
        writel(SYSTIMER_RELOAD, &systimer_base->timer0load);
        writel(SYSTIMER_RELOAD, &systimer_base->timer0value);
-       writel(SYSTIMER_EN | SYSTIMER_32BIT, &systimer_base->timer0control);
-
-       reset_timer_masked();
+       writel(SYSTIMER_EN | SYSTIMER_32BIT | SYSTIMER_PRESC_256,
+               &systimer_base->timer0control);
 
        return 0;
 
@@ -66,10 +55,10 @@ static inline unsigned long long time_to_tick(unsigned long long time)
 
 static inline unsigned long long us_to_tick(unsigned long long us)
 {
-       unsigned long long tick = us << 16;
+       unsigned long long tick = us * 1000;
        tick += NS_PER_TICK - 1;
        do_div(tick, NS_PER_TICK);
-       return tick >> 16;
+       return tick;
 }
 
 unsigned long long get_ticks(void)
@@ -124,5 +113,5 @@ ulong get_timer_masked(void)
 
 ulong get_tbclk(void)
 {
-       return CONFIG_SYS_HZ;
+       return SYSTIMER_RATE;
 }