msm: restart: call secure code to disable arbiter
The other masters in the MSM could be accessing the pmic while
pmic has raised the reset interrupt. This might cause pmic
lockups.
Disable the pmic arbiter by calling secure code when we handle
the reset interrupt from pmic. This will disable all the ssbi
transactions to the pmic avoiding a possible lockup.
Also since we wont be lowering ps_hold for pmic initiated startups
piggy back on lower_pshold to return from the power off function
so that we can call in the secure manager as the last step.
Additionally, since we will be busy looping until the pmic resets
us, pet the watchdog.
CRs-Fixed: 306410
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
diff --git a/arch/arm/mach-msm/include/mach/scm.h b/arch/arm/mach-msm/include/mach/scm.h
index 2815244..e511b2e 100644
--- a/arch/arm/mach-msm/include/mach/scm.h
+++ b/arch/arm/mach-msm/include/mach/scm.h
@@ -18,6 +18,9 @@
#define SCM_SVC_TZ 0x4
#define SCM_SVC_IO 0x5
#define SCM_SVC_INFO 0x6
+#define SCM_SVC_SSD 0x7
+#define SCM_SVC_FUSE 0x8
+#define SCM_SVC_PWR 0x9
#define SCM_SVC_TZSCHEDULER 0xFC
#ifdef CONFIG_MSM_SCM