diff --git a/arch/powerpc/include/asm/cpuidle.h b/arch/powerpc/include/asm/cpuidle.h
index 0a3255b..41b5d27 100644
--- a/arch/powerpc/include/asm/cpuidle.h
+++ b/arch/powerpc/include/asm/cpuidle.h
@@ -10,11 +10,48 @@
 #define PNV_CORE_IDLE_LOCK_BIT          0x100
 #define PNV_CORE_IDLE_THREAD_BITS       0x0FF
 
+/*
+ * By default we set the ESL and EC bits in the PSSCR.
+ *
+ * The MTL and PSLL are set to the maximum value possible as per the
+ * ISA, i.e 15.
+ *
+ * The Transition Rate is set to the Maximum value 3.
+ */
+#define PSSCR_HV_DEFAULT_VAL    (PSSCR_ESL | PSSCR_EC |		    \
+				PSSCR_PSLL_MASK | PSSCR_TR_MASK |   \
+				PSSCR_MTL_MASK)
+
+#define PSSCR_HV_DEFAULT_MASK   (PSSCR_ESL | PSSCR_EC |		    \
+				PSSCR_PSLL_MASK | PSSCR_TR_MASK |   \
+				PSSCR_MTL_MASK | PSSCR_RL_MASK)
+
 #ifndef __ASSEMBLY__
 extern u32 pnv_fastsleep_workaround_at_entry[];
 extern u32 pnv_fastsleep_workaround_at_exit[];
 
 extern u64 pnv_first_deep_stop_state;
+
+/*
+ * Older firmware only populates the RL field in psscr_val and
+ * psscr_mask.
+ *
+ * Set the remaining fields to the default value in case of the
+ * older firmware.
+ */
+static inline u64 compute_psscr_val(u64 psscr_val, u64 psscr_mask)
+{
+	if (psscr_mask == 0xf)
+		return psscr_val | PSSCR_HV_DEFAULT_VAL;
+	return psscr_val;
+}
+
+static inline u64 compute_psscr_mask(u64 psscr_mask)
+{
+	if (psscr_mask == 0xf)
+		return PSSCR_HV_DEFAULT_MASK;
+	return psscr_mask;
+}
 #endif
 
 #endif
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index c07c31b..422becd 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -458,7 +458,8 @@ static inline unsigned long get_clean_sp(unsigned long sp, int is_32)
 extern unsigned long power7_nap(int check_irq);
 extern unsigned long power7_sleep(void);
 extern unsigned long power7_winkle(void);
-extern unsigned long power9_idle_stop(unsigned long stop_level);
+extern unsigned long power9_idle_stop(unsigned long stop_psscr_val,
+				      unsigned long stop_psscr_mask);
 
 extern void flush_instruction_cache(void);
 extern void hard_reset_now(void);
diff --git a/arch/powerpc/kernel/idle_book3s.S b/arch/powerpc/kernel/idle_book3s.S
index be90e2f..37ee533 100644
--- a/arch/powerpc/kernel/idle_book3s.S
+++ b/arch/powerpc/kernel/idle_book3s.S
@@ -40,9 +40,7 @@
 #define _WORC	GPR11
 #define _PTCR	GPR12
 
-#define PSSCR_HV_TEMPLATE	PSSCR_ESL | PSSCR_EC | \
-				PSSCR_PSLL_MASK | PSSCR_TR_MASK | \
-				PSSCR_MTL_MASK
+#define PSSCR_EC_ESL_MASK_SHIFTED          (PSSCR_EC | PSSCR_ESL) >> 16
 
 	.text
 
@@ -264,7 +262,7 @@ enter_winkle:
 	IDLE_STATE_ENTER_SEQ_NORET(PPC_WINKLE)
 
 /*
- * r3 - requested stop state
+ * r3 - PSSCR value corresponding to the requested stop state.
  */
 power_enter_stop:
 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
@@ -274,9 +272,19 @@ power_enter_stop:
 	stb	r4,HSTATE_HWTHREAD_STATE(r13)
 #endif
 /*
+ * Check if we are executing the lite variant with ESL=EC=0
+ */
+	andis.   r4, r3, PSSCR_EC_ESL_MASK_SHIFTED
+	andi.    r3, r3, PSSCR_RL_MASK   /* r3 = requested stop state */
+	cmpdi	 r4, 0
+	bne	 1f
+	IDLE_STATE_ENTER_SEQ(PPC_STOP)
+	li	r3,0  /* Since we didn't lose state, return 0 */
+	b 	pnv_wakeup_noloss
+/*
  * Check if the requested state is a deep idle state.
  */
-	LOAD_REG_ADDRBASE(r5,pnv_first_deep_stop_state)
+1:	LOAD_REG_ADDRBASE(r5,pnv_first_deep_stop_state)
 	ld	r4,ADDROFF(pnv_first_deep_stop_state)(r5)
 	cmpd	r3,r4
 	bge	2f
@@ -353,16 +361,17 @@ ALT_FTR_SECTION_END_NESTED_IFSET(CPU_FTR_ARCH_207S, 66);		\
 	ld	r3,ORIG_GPR3(r1);	/* Restore original r3 */	\
 20:	nop;
 
-
 /*
- * r3 - requested stop state
+ * r3 - The PSSCR value corresponding to the stop state.
+ * r4 - The PSSCR mask corrresonding to the stop state.
  */
 _GLOBAL(power9_idle_stop)
-	LOAD_REG_IMMEDIATE(r4, PSSCR_HV_TEMPLATE)
-	or	r4,r4,r3
-	mtspr	SPRN_PSSCR, r4
-	li	r4, 1
+	mfspr   r5, SPRN_PSSCR
+	andc    r5, r5, r4
+	or      r3, r3, r5
+	mtspr 	SPRN_PSSCR, r3
 	LOAD_REG_ADDR(r5,power_enter_stop)
+	li	r4, 1
 	b	pnv_powersave_common
 	/* No return */
 /*
diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c
index 479c256..663c6ef 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -237,15 +237,21 @@ static DEVICE_ATTR(fastsleep_workaround_applyonce, 0600,
 			show_fastsleep_workaround_applyonce,
 			store_fastsleep_workaround_applyonce);
 
+/*
+ * The default stop state that will be used by ppc_md.power_save
+ * function on platforms that support stop instruction.
+ */
+u64 pnv_default_stop_val;
+u64 pnv_default_stop_mask;
 
 /*
  * Used for ppc_md.power_save which needs a function with no parameters
  */
 static void power9_idle(void)
 {
-	/* Requesting stop state 0 */
-	power9_idle_stop(0);
+	power9_idle_stop(pnv_default_stop_val, pnv_default_stop_mask);
 }
+
 /*
  * First deep stop state. Used to figure out when to save/restore
  * hypervisor context.
@@ -253,9 +259,11 @@ static void power9_idle(void)
 u64 pnv_first_deep_stop_state = MAX_STOP_STATE;
 
 /*
- * Deepest stop idle state. Used when a cpu is offlined
+ * psscr value and mask of the deepest stop idle state.
+ * Used when a cpu is offlined.
  */
-u64 pnv_deepest_stop_state;
+u64 pnv_deepest_stop_psscr_val;
+u64 pnv_deepest_stop_psscr_mask;
 
 /*
  * Power ISA 3.0 idle initialization.
@@ -302,28 +310,58 @@ static int __init pnv_arch300_idle_init(struct device_node *np, u32 *flags,
 					int dt_idle_states)
 {
 	u64 *psscr_val = NULL;
+	u64 *psscr_mask = NULL;
+	u32 *residency_ns = NULL;
+	u64 max_residency_ns = 0;
 	int rc = 0, i;
+	bool default_stop_found = false;
 
-	psscr_val = kcalloc(dt_idle_states, sizeof(*psscr_val),
-				GFP_KERNEL);
-	if (!psscr_val) {
+	psscr_val = kcalloc(dt_idle_states, sizeof(*psscr_val), GFP_KERNEL);
+	psscr_mask = kcalloc(dt_idle_states, sizeof(*psscr_mask), GFP_KERNEL);
+	residency_ns = kcalloc(dt_idle_states, sizeof(*residency_ns),
+			       GFP_KERNEL);
+
+	if (!psscr_val || !psscr_mask || !residency_ns) {
 		rc = -1;
 		goto out;
 	}
+
 	if (of_property_read_u64_array(np,
 		"ibm,cpu-idle-state-psscr",
 		psscr_val, dt_idle_states)) {
-		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-states-psscr in DT\n");
+		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr in DT\n");
+		rc = -1;
+		goto out;
+	}
+
+	if (of_property_read_u64_array(np,
+				       "ibm,cpu-idle-state-psscr-mask",
+				       psscr_mask, dt_idle_states)) {
+		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr-mask in DT\n");
+		rc = -1;
+		goto out;
+	}
+
+	if (of_property_read_u32_array(np,
+				       "ibm,cpu-idle-state-residency-ns",
+					residency_ns, dt_idle_states)) {
+		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-residency-ns in DT\n");
 		rc = -1;
 		goto out;
 	}
 
 	/*
-	 * Set pnv_first_deep_stop_state and pnv_deepest_stop_state.
+	 * Set pnv_first_deep_stop_state, pnv_deepest_stop_psscr_{val,mask},
+	 * and the pnv_default_stop_{val,mask}.
+	 *
 	 * pnv_first_deep_stop_state should be set to the first stop
 	 * level to cause hypervisor state loss.
-	 * pnv_deepest_stop_state should be set to the deepest stop
-	 * stop state.
+	 *
+	 * pnv_deepest_stop_{val,mask} should be set to values corresponding to
+	 * the deepest stop state.
+	 *
+	 * pnv_default_stop_{val,mask} should be set to values corresponding to
+	 * the shallowest (OPAL_PM_STOP_INST_FAST) loss-less stop state.
 	 */
 	pnv_first_deep_stop_state = MAX_STOP_STATE;
 	for (i = 0; i < dt_idle_states; i++) {
@@ -333,12 +371,27 @@ static int __init pnv_arch300_idle_init(struct device_node *np, u32 *flags,
 		     (pnv_first_deep_stop_state > psscr_rl))
 			pnv_first_deep_stop_state = psscr_rl;
 
-		if (pnv_deepest_stop_state < psscr_rl)
-			pnv_deepest_stop_state = psscr_rl;
-	}
+		if (max_residency_ns < residency_ns[i]) {
+			max_residency_ns = residency_ns[i];
+			pnv_deepest_stop_psscr_val =
+				compute_psscr_val(psscr_val[i], psscr_mask[i]);
+			pnv_deepest_stop_psscr_mask =
+				compute_psscr_mask(psscr_mask[i]);
+		}
 
+		if (!default_stop_found &&
+		    (flags[i] & OPAL_PM_STOP_INST_FAST)) {
+			pnv_default_stop_val =
+				compute_psscr_val(psscr_val[i], psscr_mask[i]);
+			pnv_default_stop_mask =
+				compute_psscr_mask(psscr_mask[i]);
+			default_stop_found = true;
+		}
+	}
 out:
 	kfree(psscr_val);
+	kfree(psscr_mask);
+	kfree(residency_ns);
 	return rc;
 }
 
diff --git a/arch/powerpc/platforms/powernv/powernv.h b/arch/powerpc/platforms/powernv/powernv.h
index da7c843..6130522 100644
--- a/arch/powerpc/platforms/powernv/powernv.h
+++ b/arch/powerpc/platforms/powernv/powernv.h
@@ -18,7 +18,8 @@ static inline void pnv_pci_shutdown(void) { }
 #endif
 
 extern u32 pnv_get_supported_cpuidle_states(void);
-extern u64 pnv_deepest_stop_state;
+extern u64 pnv_deepest_stop_psscr_val;
+extern u64 pnv_deepest_stop_psscr_mask;
 
 extern void pnv_lpc_init(void);
 
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c
index c789258..1c6405f 100644
--- a/arch/powerpc/platforms/powernv/smp.c
+++ b/arch/powerpc/platforms/powernv/smp.c
@@ -182,15 +182,17 @@ static void pnv_smp_cpu_kill_self(void)
 
 		ppc64_runlatch_off();
 
-		if (cpu_has_feature(CPU_FTR_ARCH_300))
-			srr1 = power9_idle_stop(pnv_deepest_stop_state);
-		else if (idle_states & OPAL_PM_WINKLE_ENABLED)
+		if (cpu_has_feature(CPU_FTR_ARCH_300)) {
+			srr1 = power9_idle_stop(pnv_deepest_stop_psscr_val,
+						pnv_deepest_stop_psscr_mask);
+		} else if (idle_states & OPAL_PM_WINKLE_ENABLED) {
 			srr1 = power7_winkle();
-		else if ((idle_states & OPAL_PM_SLEEP_ENABLED) ||
-				(idle_states & OPAL_PM_SLEEP_ENABLED_ER1))
+		} else if ((idle_states & OPAL_PM_SLEEP_ENABLED) ||
+			   (idle_states & OPAL_PM_SLEEP_ENABLED_ER1)) {
 			srr1 = power7_sleep();
-		else
+		} else {
 			srr1 = power7_nap(1);
+		}
 
 		ppc64_runlatch_on();
 
diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index 11b22b9..0be0d97 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -19,6 +19,7 @@
 #include <asm/firmware.h>
 #include <asm/opal.h>
 #include <asm/runlatch.h>
+#include <asm/cpuidle.h>
 
 #define POWERNV_THRESHOLD_LATENCY_NS 200000
 
@@ -30,7 +31,12 @@ struct cpuidle_driver powernv_idle_driver = {
 static int max_idle_state;
 static struct cpuidle_state *cpuidle_state_table;
 
-static u64 stop_psscr_table[CPUIDLE_STATE_MAX];
+struct stop_psscr_table {
+	u64 val;
+	u64 mask;
+};
+
+static struct stop_psscr_table stop_psscr_table[CPUIDLE_STATE_MAX];
 
 static u64 snooze_timeout;
 static bool snooze_timeout_en;
@@ -102,7 +108,8 @@ static int stop_loop(struct cpuidle_device *dev,
 		     int index)
 {
 	ppc64_runlatch_off();
-	power9_idle_stop(stop_psscr_table[index]);
+	power9_idle_stop(stop_psscr_table[index].val,
+			 stop_psscr_table[index].mask);
 	ppc64_runlatch_on();
 	return index;
 }
@@ -174,7 +181,7 @@ static inline void add_powernv_state(int index, const char *name,
 						    int),
 				     unsigned int target_residency,
 				     unsigned int exit_latency,
-				     u64 psscr_val)
+				     u64 psscr_val, u64 psscr_mask)
 {
 	strncpy(powernv_states[index].name, name, CPUIDLE_NAME_LEN);
 	strncpy(powernv_states[index].desc, name, CPUIDLE_NAME_LEN);
@@ -186,7 +193,9 @@ static inline void add_powernv_state(int index, const char *name,
 	if (idle_fn != stop_loop)
 		return;
 
-	stop_psscr_table[index] = psscr_val;
+	stop_psscr_table[index].val = compute_psscr_val(psscr_val,
+							psscr_mask);
+	stop_psscr_table[index].mask = compute_psscr_mask(psscr_mask);
 }
 
 static int powernv_add_idle_states(void)
@@ -198,6 +207,7 @@ static int powernv_add_idle_states(void)
 	u32 residency_ns[CPUIDLE_STATE_MAX];
 	u32 flags[CPUIDLE_STATE_MAX];
 	u64 psscr_val[CPUIDLE_STATE_MAX];
+	u64 psscr_mask[CPUIDLE_STATE_MAX];
 	const char *names[CPUIDLE_STATE_MAX];
 	int i, rc;
 
@@ -245,15 +255,23 @@ static int powernv_add_idle_states(void)
 
 	/*
 	 * If the idle states use stop instruction, probe for psscr values
-	 * which are necessary to specify required stop level.
+	 * and psscr mask which are necessary to specify required stop level.
 	 */
-	if (flags[0] & (OPAL_PM_STOP_INST_FAST | OPAL_PM_STOP_INST_DEEP))
+	if (flags[0] & (OPAL_PM_STOP_INST_FAST | OPAL_PM_STOP_INST_DEEP)) {
 		if (of_property_read_u64_array(power_mgt,
 		    "ibm,cpu-idle-state-psscr", psscr_val, dt_idle_states)) {
-			pr_warn("cpuidle-powernv: missing ibm,cpu-idle-states-psscr in DT\n");
+			pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr in DT\n");
 			goto out;
 		}
 
+		if (of_property_read_u64_array(power_mgt,
+					       "ibm,cpu-idle-state-psscr-mask",
+						psscr_mask, dt_idle_states)) {
+			pr_warn("cpuidle-powernv:Missing ibm,cpu-idle-state-psscr-mask in DT\n");
+			goto out;
+		}
+	}
+
 	rc = of_property_read_u32_array(power_mgt,
 		"ibm,cpu-idle-state-residency-ns", residency_ns, dt_idle_states);
 
@@ -284,13 +302,13 @@ static int powernv_add_idle_states(void)
 			/* Add NAP state */
 			add_powernv_state(nr_idle_states, "Nap",
 					  CPUIDLE_FLAG_NONE, nap_loop,
-					  target_residency, exit_latency, 0);
+					  target_residency, exit_latency, 0, 0);
 		} else if ((flags[i] & OPAL_PM_STOP_INST_FAST) &&
 				!(flags[i] & OPAL_PM_TIMEBASE_STOP)) {
 			add_powernv_state(nr_idle_states, names[i],
 					  CPUIDLE_FLAG_NONE, stop_loop,
 					  target_residency, exit_latency,
-					  psscr_val[i]);
+					  psscr_val[i], psscr_mask[i]);
 		}
 
 		/*
@@ -305,13 +323,13 @@ static int powernv_add_idle_states(void)
 			add_powernv_state(nr_idle_states, "FastSleep",
 					  CPUIDLE_FLAG_TIMER_STOP,
 					  fastsleep_loop,
-					  target_residency, exit_latency, 0);
+					  target_residency, exit_latency, 0, 0);
 		} else if ((flags[i] & OPAL_PM_STOP_INST_DEEP) &&
 				(flags[i] & OPAL_PM_TIMEBASE_STOP)) {
 			add_powernv_state(nr_idle_states, names[i],
 					  CPUIDLE_FLAG_TIMER_STOP, stop_loop,
 					  target_residency, exit_latency,
-					  psscr_val[i]);
+					  psscr_val[i], psscr_mask[i]);
 		}
 #endif
 		nr_idle_states++;
