sysclk: add on-the-fly CPU undervolt

Source/sys-clk/common/include/registers.h

@@ -12,9 +12,8 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- * 
+ *
  */
- 
 
 #pragma once
 
@@ -310,6 +309,9 @@
 #define EMC_PMACRO_CMD_CTRL_1_0 0x784
 #define EMC_PMACRO_CMD_CTRL_2_0 0x788
 
+#define MC_REGISTER_BASE 0x70019000
+#define MC_REGISTER_REGION_SIZE 0x1000
+
 #define MC_INTSTATUS_0 0x000
 #define MC_INTMASK_0 0x004
 #define MC_ERR_STATUS_0 0x008
@@ -489,4 +491,40 @@
 #define MC_EMEM_ARB_DHYST_TIMEOUT_UTIL_7 0xBEC
 #define MC_ERR_GENERALIZED_CARVEOUT_STATUS_0 0xC00
 #define MC_SECURITY_CARVEOUT2_BOM_0 0xC5C
-#define MC_SECURITY_CARVEOUT3_BOM_0 0xCAC
+#define MC_SECURITY_CARVEOUT3_BOM_0 0xCAC
+
+#define CLDVFS_REGION_BASE 0x70110000
+#define CLDVFS_REGION_SIZE 0x1000
+#define CL_DVFS_CTRL_0 0x0
+#define CL_DVFS_CONFIG_0 0x4
+#define CL_DVFS_PARAMS_0 0x8
+#define CL_DVFS_TUNE0_0 0xC
+#define CL_DVFS_TUNE1_0 0x10
+#define CL_DVFS_FREQ_REQ_0 0x14
+#define CL_DVFS_SCALE_RAMP_0 0x18
+#define CL_DVFS_DROOP_CTRL_0 0x1C
+#define CL_DVFS_OUTPUT_CFG_0 0x20
+#define CL_DVFS_OUTPUT_FORCE_0 0x24
+#define CL_DVFS_MONITOR_CTRL_0 0x28
+#define CL_DVFS_MONITOR_DATA_0 0x2C
+#define CL_DVFS_I2C_CFG_0 0x40
+#define CL_DVFS_I2C_VDD_REG_ADDR_0 0x44
+#define CL_DVFS_I2C_STS_0 0x48
+#define CL_DVFS_INTR_STS_0 0x5C
+#define CL_DVFS_INTR_EN_0 0x60
+#define DVFS_DFLL_THROTTLE_CTRL_0 0x64
+#define DVFS_DFLL_THROTTLE_LIGHT_0 0x68
+#define DVFS_DFLL_THROTTLE_MEDIUM_0 0x6C
+#define DVFS_DFLL_THROTTLE_HEAVY_0 0x70
+#define DVFS_CC4_HVC_0 0x74
+#define CL_DVFS_MONITOR_DATA_0 0x2C
+#define CL_DVFS_I2C_CFG_0 0x40
+#define CL_DVFS_I2C_VDD_REG_ADDR_0 0x44
+#define CL_DVFS_I2C_STS_0 0x48
+#define CL_DVFS_INTR_STS_0 0x5C
+#define CL_DVFS_INTR_EN_0 0x60
+#define DVFS_DFLL_THROTTLE_CTRL_0 0x64
+#define DVFS_DFLL_THROTTLE_LIGHT_0 0x68
+#define DVFS_DFLL_THROTTLE_MEDIUM_0 0x6C
+#define DVFS_DFLL_THROTTLE_HEAVY_0 0x70
+#define CL_DVFS_I2C_CLK_DIVISOR_REGISTER_0 0x16C

Source/sys-clk/common/include/sysclk/config.h

@@ -58,7 +58,7 @@ typedef enum {
 
     HorizonOCConfigValue_DVFSMode,
     HorizonOCConfigValue_DVFSOffset,
-
+    HorizonOCConfigValue_LiveCpuUv,
     HorizonOCConfigValue_EnableExperimentalSettings,
 
     HorizonOCConfigValue_GPUScheduling,
@@ -235,6 +235,9 @@ static inline const char* sysclkFormatConfigValue(SysClkConfigValue val, bool pr
         case HorizonOCConfigValue_GPUScheduling:
             return pretty ? "GPU Scheduling" : "gpu_scheduling";
 
+        case HorizonOCConfigValue_LiveCpuUv:
+            return pretty ? "Live CPU Undervolt" : "live_cpu_uv";
+
         case HorizonOCConfigValue_EnableExperimentalSettings:
             return pretty ? "Enable Experimental Settings" : "enable_experimental_settings";
 
@@ -416,6 +419,7 @@ static inline uint64_t sysclkDefaultConfigValue(SysClkConfigValue val)
         case HorizonOCConfigValue_OverwriteRefreshRate:
         case HorizonOCConfigValue_EnableUnsafeDisplayFreqs:
         case HorizonOCConfigValue_GPUScheduling:
+        case HorizonOCConfigValue_LiveCpuUv:
             return 0ULL;
         case HocClkConfigValue_EristaMaxCpuClock:
             return 1785ULL;
@@ -463,6 +467,7 @@ static inline uint64_t sysclkValidConfigValue(SysClkConfigValue val, uint64_t in
         case HorizonOCConfigValue_EnableUnsafeDisplayFreqs:
         case HocClkConfigValue_IsFirstLoad:
         case HorizonOCConfigValue_EnableExperimentalSettings:
+        case HorizonOCConfigValue_LiveCpuUv:
             return (input & 0x1) == input;
 
         case KipConfigValue_custRev: