Merge branches 'pm-em', 'pm-opp' and 'pm-devfreq'

Merge energy model management, OPP (operating performance points) and
devfreq updates for 6.18-rc1:

 - Prevent CPU capacity updates after registering a perf domain from
   failing on a first CPU that is not present (Christian Loehle)

 - Add support for the cases in which frequency alone is not sufficient
   to uniquely identify an OPP (Krishna Chaitanya Chundru)

 - Use to_result() for OPP error handling in Rust (Onur Özkan)

 - Add support for LPDDR5 on Rockhip RK3588 SoC to rockchip-dfi devfreq
   driver (Nicolas Frattaroli)

 - Fix an issue where DDR cycle counts on RK3588/RK3528 with LPDDR4(X)
   are reported as half by adding a cycle multiplier to the DFI driver
   in rockchip-dfi devfreq-event driver (Nicolas Frattaroli)

 - Fix missing error pointer dereference check of regulator instance in
   the mtk-cci devfreq driver probe and remove a redundant condition from
   an if () statement in that driver (Dan Carpenter, Liao Yuanhong)

* pm-em:
  PM: EM: Fix late boot with holes in CPU topology

* pm-opp:
  OPP: Add support to find OPP for a set of keys
  rust: opp: use to_result for error handling

* pm-devfreq:
  PM / devfreq: rockchip-dfi: add support for LPDDR5
  PM / devfreq: rockchip-dfi: double count on RK3588
  PM / devfreq: mtk-cci: avoid redundant conditions
  PM / devfreq: mtk-cci: Fix potential error pointer dereference in probe()

kernel/power/energy_model.c

@@ -799,7 +799,7 @@ void em_adjust_cpu_capacity(unsigned int cpu)
 static void em_check_capacity_update(void)
 {
 	cpumask_var_t cpu_done_mask;
-	int cpu;
+	int cpu, failed_cpus = 0;
 
 	if (!zalloc_cpumask_var(&cpu_done_mask, GFP_KERNEL)) {
 		pr_warn("no free memory\n");
@@ -817,10 +817,8 @@ static void em_check_capacity_update(void)
 
 		policy = cpufreq_cpu_get(cpu);
 		if (!policy) {
-			pr_debug("Accessing cpu%d policy failed\n", cpu);
-			schedule_delayed_work(&em_update_work,
-					      msecs_to_jiffies(1000));
-			break;
+			failed_cpus++;
+			continue;
 		}
 		cpufreq_cpu_put(policy);
 
@@ -835,6 +833,9 @@ static void em_check_capacity_update(void)
 		em_adjust_new_capacity(cpu, dev, pd);
 	}
 
+	if (failed_cpus)
+		schedule_delayed_work(&em_update_work, msecs_to_jiffies(1000));
+
 	free_cpumask_var(cpu_done_mask);
 }