OMAP3: PM: Clear pending PRCM reset flags on init

Any pending reset flags can prevent retention.  Ensure they are all
cleared during boot.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index cc83dfc39a8bec6ef4ae386f54e17feb937cd23c..1422e931f57f130788be870c1d76e2292d8929f2 100644 (file)
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -613,6 +613,15 @@ static void __init prcm_setup_regs(void)
        /* Clear any pending PRCM interrupts */
        prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
 
+       /* Clear any pending 'reset' flags */
+       prm_write_mod_reg(0xffffffff, MPU_MOD, RM_RSTST);
+       prm_write_mod_reg(0xffffffff, CORE_MOD, RM_RSTST);
+       prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, RM_RSTST);
+       prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, RM_RSTST);
+       prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, RM_RSTST);
+       prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, RM_RSTST);
+       prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, RM_RSTST);
+
        /* Clear any pending PRCM interrupts */
        prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);