From b9b36de4c9dc2036a2516200e864852cdf047b08 Mon Sep 17 00:00:00 2001
From: hanabbi <megamihanasan@gmail.com>
Date: Tue, 25 Apr 2023 00:35:57 +0900
Subject: [PATCH] feat(sys-clk-oc): set mariko min clock to 1020Mhz if using
 governor

Mariko: If using governor and cpu profile is higher than 1020, min clock will be set to 1020.
Not much power saved by underclocking below 1020, so to prevent stutter and hanging
---
 Source/sys-clk-OC/sysmodule/src/clock_manager.cpp | 8 ++++++++
 Source/sys-clk-OC/sysmodule/src/oc_extra.cpp      | 6 ++++++
 Source/sys-clk-OC/sysmodule/src/oc_extra.h        | 1 +
 3 files changed, 15 insertions(+)

diff --git a/Source/sys-clk-OC/sysmodule/src/clock_manager.cpp b/Source/sys-clk-OC/sysmodule/src/clock_manager.cpp
index 393ef71f..494ad066 100644
--- a/Source/sys-clk-OC/sysmodule/src/clock_manager.cpp
+++ b/Source/sys-clk-OC/sysmodule/src/clock_manager.cpp
@@ -147,6 +147,14 @@ void ClockManager::Tick()
         for (unsigned int module = 0; module < SysClkModule_EnumMax; module++)
         {
             uint32_t hz = GetHz((SysClkModule)module);
+
+            if (module == SysClkModule_CPU) {
+                this->governor->SetMinHz(*Clocks::freqRange[module].first, SysClkModule_CPU);
+                if (Clocks::GetIsMariko() && hz > (uint32_t)1020'000'000) {
+                    this->governor->SetMinHz(1020'000'000, SysClkModule_CPU);
+                }
+            }      
+            
             this->governor->SetMaxHz(hz, (SysClkModule)module);
 
             if (hz && hz != this->context->freqs[module] && !this->governor->IsHandledByGovernor((SysClkModule)module))
diff --git a/Source/sys-clk-OC/sysmodule/src/oc_extra.cpp b/Source/sys-clk-OC/sysmodule/src/oc_extra.cpp
index 4084dbec..f6f1770e 100644
--- a/Source/sys-clk-OC/sysmodule/src/oc_extra.cpp
+++ b/Source/sys-clk-OC/sysmodule/src/oc_extra.cpp
@@ -294,6 +294,12 @@ void Governor::SetMaxHz(uint32_t maxHz, SysClkModule module) {
     }
 }
 
+void Governor::SetMinHz(uint32_t minHz, SysClkModule module) {
+    if (module == SysClkModule_CPU) {
+        m_cpu_gov->min_hz = minHz;
+    }
+}
+
 void Governor::GovernorManager::Start() {
     if (this->running)
         return;
diff --git a/Source/sys-clk-OC/sysmodule/src/oc_extra.h b/Source/sys-clk-OC/sysmodule/src/oc_extra.h
index c80a4068..b30a623b 100644
--- a/Source/sys-clk-OC/sysmodule/src/oc_extra.h
+++ b/Source/sys-clk-OC/sysmodule/src/oc_extra.h
@@ -337,6 +337,7 @@ public:
     uint32_t GetPerfConf() { return m_perf_conf_id; };
 
     void SetMaxHz(uint32_t maxHz, SysClkModule module);
+    void SetMinHz(uint32_t minHz, SysClkModule module);
 
     void SetAutoCPUBoost(bool enabled) { m_cpu_gov->auto_boost = enabled; };
     void SetCPUBoostHz(uint32_t boostHz) { m_cpu_gov->boost_hz = boostHz; };