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[05/11] OMAP3: PM: Clear pending PRCM reset flags on init

Message ID 1245948124-24111-6-git-send-email-khilman@deeprootsystems.com (mailing list archive)
State Awaiting Upstream, archived
Delegated to: Kevin Hilman
Headers show

Commit Message

Kevin Hilman June 25, 2009, 4:41 p.m. UTC 
Any pending reset flags can prevent retention.  Ensure they are all
cleared during boot.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
---
 arch/arm/mach-omap2/pm34xx.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
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Patch

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index cc83dfc..1422e93 100644
--- 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);