hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ARM: OMAP2+: Make sure LOGICRETSTATE bits are not cleared 

We may have LOGICRETSTATE cleared by the bootloader or kexec boot.

Currently this means we will see lost GPIO interrupts at least for
network interfaces such as wlcore and smsc911x if PER hits retention.

Let's fix the issue by making sure LOGICRETSTATE is set. Once we have
GPIOs working with wakeirqs then we should be able to clear it.

Cc: Keerthy <j-keerthy@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Tony Lindgren 2018-05-17 15:36:20 -07:00
parent 60cc43fc88
commit f74297dd93
1 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/arm/mach-omap2/pm44xx.c
View File

@ -131,6 +131,19 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
return 0; return 0;
} }
/*
* Bootloader or kexec boot may have LOGICRETSTATE cleared
* for some domains. This is the case when kexec booting from
* Android kernels that support off mode for example.
* Make sure it's set at least for core and per, otherwise
* we currently will see lost GPIO interrupts for wlcore and
* smsc911x at least if per hits retention during idle.
*/
if (!strncmp(pwrdm->name, "core", 4) ||
!strncmp(pwrdm->name, "l4per", 5) ||
!strncmp(pwrdm->name, "wkup", 4))
pwrdm_set_logic_retst(pwrdm, PWRDM_POWER_RET);
pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC); pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC);
if (!pwrst) if (!pwrst)
return -ENOMEM; return -ENOMEM;