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hikey960: add delay before reset 

If system is still accessing storage device, reboot operation
may cause data broken. So add the flush and delay operation
before system reset.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
This commit is contained in:
Haojian Zhuang 2018-03-26 13:18:13 +08:00
parent ba7848e283
commit 7dcef5ebbb
1 changed files with 4 additions and 0 deletions
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4
plat/hisilicon/hikey960/hikey960_pm.c
View File

@ -9,6 +9,7 @@
#include <cci.h>
#include <console.h>
#include <debug.h>
#include <delay_timer.h>
#include <gicv2.h>
#include <hi3660.h>
#include <hi3660_crg.h>
@ -114,6 +115,9 @@ void hikey960_pwr_domain_off(const psci_power_state_t *target_state)
static void __dead2 hikey960_system_reset(void)
{
dsb();
isb();
mdelay(2000);
mmio_write_32(SCTRL_SCPEREN1_REG,
SCPEREN1_WAIT_DDR_SELFREFRESH_DONE_BYPASS);
mmio_write_32(SCTRL_SCSYSSTAT_REG, 0xdeadbeef);