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rockchip/rk3399: Fix sram_udelay 

This fixes an off by 576x bug the the sram_udelay code. The wrong
value was multipled by the system ticks per mhz value (which is 24),
so we delayed for 1/576th of the requested time.

Signed-off-by: Derek Basehore <dbasehore@chromium.org>
This commit is contained in:
Derek Basehore 2018-04-06 16:45:24 -07:00
parent 93883a2931
commit 3cb74922d0
1 changed files with 3 additions and 3 deletions
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6
plat/rockchip/rk3399/drivers/dram/suspend.c
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@ -85,10 +85,11 @@ static __pmusramfunc uint32_t sram_get_timer_value(void)
static __pmusramfunc void sram_udelay(uint32_t usec)
{
uint32_t start, cnt, delta, delta_us;
uint32_t start, cnt, delta, total_ticks;
/* counter is decreasing */
start = sram_get_timer_value();
total_ticks = usec * SYS_COUNTER_FREQ_IN_MHZ;
do {
cnt = sram_get_timer_value();
if (cnt > start) {
@ -96,8 +97,7 @@ static __pmusramfunc void sram_udelay(uint32_t usec)
delta += start;
} else
delta = start - cnt;
delta_us = (delta * SYS_COUNTER_FREQ_IN_MHZ);
} while (delta_us < usec);
} while (delta <= total_ticks);
}
static __pmusramfunc void configure_sgrf(void)