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>
diff --git a/plat/hisilicon/hikey960/hikey960_pm.c b/plat/hisilicon/hikey960/hikey960_pm.c
index 22963c4..ffe7fcf 100644
--- a/plat/hisilicon/hikey960/hikey960_pm.c
+++ b/plat/hisilicon/hikey960/hikey960_pm.c
@@ -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 @@
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);