1 files changed, 22 insertions, 3 deletions

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 74bc15e71e9f..a81ed251e667 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -917,12 +917,29 @@ void omap3_pm_off_mode_enable(int enable)
                 state = PWRDM_POWER_RET;
 
 #ifdef CONFIG_CPU_IDLE
-        omap3_cpuidle_update_states(state, state);
+        /*
+         * Erratum i583: implementation for ES rev < Es1.2 on 3630. We cannot
+         * enable OFF mode in a stable form for previous revisions, restrict
+         * instead to RET
+         */
+        if (IS_PM34XX_ERRATUM(PM_SDRC_WAKEUP_ERRATUM_i583))
+                omap3_cpuidle_update_states(state, PWRDM_POWER_RET);
+        else
+                omap3_cpuidle_update_states(state, state);
 #endif
 
         list_for_each_entry(pwrst, &pwrst_list, node) {
-                pwrst->next_state = state;
-                omap_set_pwrdm_state(pwrst->pwrdm, state);
+                if (IS_PM34XX_ERRATUM(PM_SDRC_WAKEUP_ERRATUM_i583) &&
+                                pwrst->pwrdm == core_pwrdm &&
+                                state == PWRDM_POWER_OFF) {
+                        pwrst->next_state = PWRDM_POWER_RET;
+                        WARN_ONCE(1,
+                                "%s: Core OFF disabled due to errata i583\n",
+                                __func__);
+                } else {
+                        pwrst->next_state = state;
+                }
+                omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
         }
 }
 
@@ -1000,6 +1017,8 @@ static void __init pm_errata_configure(void)
                 pm34xx_errata |= PM_RTA_ERRATUM_i608;
                 /* Enable the l2 cache toggling in sleep logic */
                 enable_omap3630_toggle_l2_on_restore();
+                if (omap_rev() < OMAP3630_REV_ES1_2)
+                        pm34xx_errata |= PM_SDRC_WAKEUP_ERRATUM_i583;
         }
 }