Rogue bootloaders may enable the modem and thus keep the
D2D power- and clock-domains from going into retention.
Reset modem on boot to be sure it is in known state.
Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-omap2/pm34xx.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 9a1933b..db3a34d 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -418,6 +418,12 @@ static void __init omap3_iva_idle(void)
static void __init prcm_setup_regs(void)
{
+ /* reset modem */
+ prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON |
+ OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST,
+ CORE_MOD, RM_RSTCTRL);
+ prm_write_mod_reg(0, CORE_MOD, RM_RSTCTRL);
+
/* XXX Reset all wkdeps. This should be done when initializing
* powerdomains */
prm_write_mod_reg(0, OMAP3430_IVA2_MOD, PM_WKDEP);
--
1.6.0.3
--
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