timer: dw-apb: Add missing 64bit up-conversion

The generic timer count is an incrementing 64bit value and a timer driver
must return an incrementing 64bit value. The DW APB timer only provides a
32bit timer counting down, thus the result must be inverted and converted
to a 64bit value. The current implementation is however missing the 64bit
up-conversion and this results in random timer roll-overs, which in turn
triggers random timeouts throughout the codebase.

This patch adds the missing 64bit up-conversion to fix the issue.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <chin.liang.see@intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Cc: Tien Fong Chee <tien.fong.chee@intel.com>

diff --git a/drivers/timer/dw-apb-timer.c b/drivers/timer/dw-apb-timer.c
index 085bfb0..cb48801 100644 (file)
--- a/drivers/timer/dw-apb-timer.c
+++ b/drivers/timer/dw-apb-timer.c
@@ -32,7 +32,7 @@ static int dw_apb_timer_get_count(struct udevice *dev, u64 *count)
         * requires the count to be incrementing. Invert the
         * result.
         */
-       *count = ~readl(priv->regs + DW_APB_CURR_VAL);
+       *count = timer_conv_64(~readl(priv->regs + DW_APB_CURR_VAL));
 
        return 0;
 }