actually fix gpu real hz

Source/hoc-clk/sysmodule/src/board/board.cpp

@@ -52,7 +52,7 @@
 
 namespace board {
 
-    u64 clkVirtAddr, dsiVirtAddr, apbVirtAddr, fuseVirtAddr, sysVirtAddr, actmonVirtAddr;
+    u64 clkVirtAddr, dsiVirtAddr, apbVirtAddr, fuseVirtAddr, sysVirtAddr, actmonVirtAddr, gpuVirtAddr;
 
     HocClkSocType gSocType;
     u8 gDramID;
@@ -157,6 +157,9 @@ namespace board {
         ASSERT_RESULT_OK(rc, "QueryMemoryMapping (sys)");
         actmonVirtAddr = sysVirtAddr + 0x800;
 
+        rc = QueryMemoryMapping(&gpuVirtAddr, 0x57000000, 0x1000000);
+        ASSERT_RESULT_OK(rc, "QueryMemoryMapping (gpu)");
+
         FetchHardwareInfos();
 
         Result nvCheck = 1;

Source/hoc-clk/sysmodule/src/board/board.hpp

@@ -42,7 +42,7 @@
 #define HOSSVC_HAS_TC (hosversionAtLeast(5, 0, 0))
 
 namespace board {
-    extern u64 clkVirtAddr, dsiVirtAddr, apbVirtAddr, fuseVirtAddr, sysVirtAddr, actmonVirtAddr;
+    extern u64 clkVirtAddr, dsiVirtAddr, apbVirtAddr, fuseVirtAddr, sysVirtAddr, actmonVirtAddr, gpuVirtAddr;
     extern HocClkSocType gSocType;
     extern u8 gDramID;
     extern HocClkConsoleType gConsoleType;

Source/hoc-clk/sysmodule/src/board/board_freq.cpp

@@ -180,8 +180,27 @@ namespace board {
         switch (module) {
             case HocClkModule_CPU:
                 return bpmp::GetSharedInfo()->freqCpu * 1000;
-            case HocClkModule_GPU:
-                return bpmp::GetSharedInfo()->freqGpu * 1000;
+            case HocClkModule_GPU: {
+                constexpr u32 ClkOutEnbX  = 0x280;
+                constexpr u32 RstDevicesX = 0x28C;
+                constexpr u32 GpuBit      = (1u << 24);
+
+                const bool gpuEnabled = (*reinterpret_cast<volatile u32 *>(clkVirtAddr + ClkOutEnbX) & GpuBit) &&
+                                        !(*reinterpret_cast<volatile u32 *>(clkVirtAddr + RstDevicesX) & GpuBit);
+                if (!gpuEnabled) {
+                    return 0;
+                }
+
+                const u32 coeff = *reinterpret_cast<volatile u32 *>(gpuVirtAddr + 0x137004);
+                const u32 divm  = coeff & 0xFF;
+                const u32 divn  = (coeff >> 8) & 0xFF;
+                const u32 divp  = (coeff >> 16) & 0x3F;
+                if (divm == 0 || divp == 0) {
+                    return 0;
+                }
+
+                return static_cast<u32>((static_cast<u64>(38400000) * divn) / (divm * divp) / 2);
+            }
             case HocClkModule_MEM:
                 return config::GetConfigValue(HocClkConfigValue_MemoryFrequencyMeasurementMode) == MemoryFrequencyMeasurementMode_PLL
                            ? pllmb::getRamClockRatePLLMB()