diff --git a/services/surfaceflinger/DisplayHardware/DisplayMode.h b/services/surfaceflinger/DisplayHardware/DisplayMode.h
index 224f50e..e90b5b7 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayMode.h
+++ b/services/surfaceflinger/DisplayHardware/DisplayMode.h
@@ -31,10 +31,11 @@
 #include <common/FlagManager.h>
 #include <scheduler/Fps.h>
 
-#include "DisplayHardware/Hal.h"
+#include "Hal.h"
 
 namespace android {
 
+using aidl::android::hardware::graphics::composer3::OutputType;
 namespace hal = android::hardware::graphics::composer::hal;
 
 class DisplayMode;
@@ -114,6 +115,11 @@
             return *this;
         }
 
+        Builder& setHdrOutputType(OutputType type) {
+            mDisplayMode->mHdrOutputType = type;
+            return *this;
+        }
+
     private:
         float getDefaultDensity() {
             // Default density is based on TVs: 1080p displays get XHIGH density, lower-
@@ -166,6 +172,8 @@
     // without visual interruptions such as a black screen.
     int32_t getGroup() const { return mGroup; }
 
+    OutputType getHdrOutputType() const { return mHdrOutputType; }
+
 private:
     explicit DisplayMode(hal::HWConfigId id) : mHwcId(id) {}
 
@@ -179,21 +187,25 @@
     Dpi mDpi;
     int32_t mGroup = -1;
     std::optional<hal::VrrConfig> mVrrConfig;
+    OutputType mHdrOutputType;
 };
 
 inline bool equalsExceptDisplayModeId(const DisplayMode& lhs, const DisplayMode& rhs) {
     return lhs.getHwcId() == rhs.getHwcId() && lhs.getResolution() == rhs.getResolution() &&
             lhs.getVsyncRate().getPeriodNsecs() == rhs.getVsyncRate().getPeriodNsecs() &&
-            lhs.getDpi() == rhs.getDpi() && lhs.getGroup() == rhs.getGroup();
+            lhs.getDpi() == rhs.getDpi() && lhs.getGroup() == rhs.getGroup() &&
+            lhs.getVrrConfig() == rhs.getVrrConfig() &&
+            lhs.getHdrOutputType() == rhs.getHdrOutputType();
 }
 
 inline std::string to_string(const DisplayMode& mode) {
     return base::StringPrintf("{id=%d, hwcId=%d, resolution=%dx%d, vsyncRate=%s, "
-                              "dpi=%.2fx%.2f, group=%d, vrrConfig=%s}",
+                              "dpi=%.2fx%.2f, group=%d, vrrConfig=%s, supportedHdrTypes=%s}",
                               ftl::to_underlying(mode.getId()), mode.getHwcId(), mode.getWidth(),
                               mode.getHeight(), to_string(mode.getVsyncRate()).c_str(),
                               mode.getDpi().x, mode.getDpi().y, mode.getGroup(),
-                              to_string(mode.getVrrConfig()).c_str());
+                              to_string(mode.getVrrConfig()).c_str(),
+                              toString(mode.getHdrOutputType()).c_str());
 }
 
 template <typename... DisplayModePtrs>
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 9943856..55ccdef 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -336,7 +336,8 @@
                                       .height = config.height,
                                       .vsyncPeriod = config.vsyncPeriod,
                                       .configGroup = config.configGroup,
-                                      .vrrConfig = config.vrrConfig};
+                                      .vrrConfig = config.vrrConfig,
+                                      .hdrOutputType = config.hdrOutputType};
 
         const DisplayConfiguration::Dpi estimatedDPI =
                 getEstimatedDotsPerInchFromSize(hwcDisplayId, hwcMode);
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index e21ce1d..52662cf 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -55,6 +55,7 @@
 #include <aidl/android/hardware/graphics/composer3/DisplayCapability.h>
 #include <aidl/android/hardware/graphics/composer3/DisplayLuts.h>
 #include <aidl/android/hardware/graphics/composer3/LutProperties.h>
+#include <aidl/android/hardware/graphics/composer3/OutputType.h>
 #include <aidl/android/hardware/graphics/composer3/OverlayProperties.h>
 
 namespace android {
@@ -112,12 +113,14 @@
         float dpiY = -1.f;
         int32_t configGroup = -1;
         std::optional<hal::VrrConfig> vrrConfig;
+        OutputType hdrOutputType;
 
         friend std::ostream& operator<<(std::ostream& os, const HWCDisplayMode& mode) {
             return os << "id=" << mode.hwcId << " res=" << mode.width << "x" << mode.height
                       << " vsyncPeriod=" << mode.vsyncPeriod << " dpi=" << mode.dpiX << "x"
                       << mode.dpiY << " group=" << mode.configGroup
-                      << " vrrConfig=" << to_string(mode.vrrConfig).c_str();
+                      << " vrrConfig=" << to_string(mode.vrrConfig).c_str()
+                      << " hdrOutputType=" << toString(mode.hdrOutputType);
         }
     };
 
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 97c8623..cf865c5 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -172,6 +172,7 @@
 
 #include <aidl/android/hardware/graphics/common/DisplayDecorationSupport.h>
 #include <aidl/android/hardware/graphics/composer3/DisplayCapability.h>
+#include <aidl/android/hardware/graphics/composer3/OutputType.h>
 #include <aidl/android/hardware/graphics/composer3/RenderIntent.h>
 
 #undef NO_THREAD_SAFETY_ANALYSIS
@@ -3498,6 +3499,9 @@
     DisplayModes newModes;
     for (const auto& hwcMode : hwcModes) {
         const auto id = nextModeId++;
+        OutputType hdrOutputType = FlagManager::getInstance().connected_display_hdr()
+                ? hwcMode.hdrOutputType
+                : OutputType::INVALID;
         newModes.try_emplace(id,
                              DisplayMode::Builder(hwcMode.hwcId)
                                      .setId(id)
@@ -3508,6 +3512,7 @@
                                      .setDpiX(hwcMode.dpiX)
                                      .setDpiY(hwcMode.dpiY)
                                      .setGroup(hwcMode.configGroup)
+                                     .setHdrOutputType(hdrOutputType)
                                      .build());
     }
 
diff --git a/services/surfaceflinger/common/FlagManager.cpp b/services/surfaceflinger/common/FlagManager.cpp
index f257c7c..16b2988 100644
--- a/services/surfaceflinger/common/FlagManager.cpp
+++ b/services/surfaceflinger/common/FlagManager.cpp
@@ -257,7 +257,7 @@
 FLAG_MANAGER_ACONFIG_FLAG(force_compile_graphite_renderengine, "");
 FLAG_MANAGER_ACONFIG_FLAG(true_hdr_screenshots, "debug.sf.true_hdr_screenshots");
 FLAG_MANAGER_ACONFIG_FLAG(display_config_error_hal, "");
-FLAG_MANAGER_ACONFIG_FLAG(connected_display_hdr, "");
+FLAG_MANAGER_ACONFIG_FLAG(connected_display_hdr, "debug.sf.connected_display_hdr");
 FLAG_MANAGER_ACONFIG_FLAG(deprecate_frame_tracker, "");
 FLAG_MANAGER_ACONFIG_FLAG(skip_invisible_windows_in_input, "");
 FLAG_MANAGER_ACONFIG_FLAG(begone_bright_hlg, "debug.sf.begone_bright_hlg");
diff --git a/services/surfaceflinger/tests/unittests/HWComposerTest.cpp b/services/surfaceflinger/tests/unittests/HWComposerTest.cpp
index 30bce2e..ba2d3e2 100644
--- a/services/surfaceflinger/tests/unittests/HWComposerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/HWComposerTest.cpp
@@ -384,6 +384,7 @@
         const ui::Size size = info->preferredDetailedTimingDescriptor->physicalSizeInMm;
         const float expectedDpiX = (kWidth * kMmPerInch / size.width);
         const float expectedDpiY = (kHeight * kMmPerInch / size.height);
+        const OutputType hdrOutputType = OutputType::SYSTEM;
         const hal::VrrConfig vrrConfig =
                 hal::VrrConfig{.minFrameIntervalNs = static_cast<Fps>(120_Hz).getPeriodNsecs(),
                                .notifyExpectedPresentConfig = hal::VrrConfig::
@@ -394,7 +395,8 @@
                                                        .height = kHeight,
                                                        .configGroup = kConfigGroup,
                                                        .vsyncPeriod = kVsyncPeriod,
-                                                       .vrrConfig = vrrConfig};
+                                                       .vrrConfig = vrrConfig,
+                                                       .hdrOutputType = hdrOutputType};
 
         EXPECT_CALL(*mHal, getDisplayConfigurations(kHwcDisplayId, _, _))
                 .WillOnce(DoAll(SetArgPointee<2>(std::vector<hal::DisplayConfiguration>{
@@ -410,6 +412,7 @@
         EXPECT_EQ(modes.front().configGroup, kConfigGroup);
         EXPECT_EQ(modes.front().vsyncPeriod, kVsyncPeriod);
         EXPECT_EQ(modes.front().vrrConfig, vrrConfig);
+        EXPECT_EQ(modes.front().hdrOutputType, hdrOutputType);
         if (!FlagManager::getInstance().correct_dpi_with_display_size()) {
             EXPECT_EQ(modes.front().dpiX, -1);
             EXPECT_EQ(modes.front().dpiY, -1);
@@ -435,6 +438,7 @@
         EXPECT_EQ(modes.front().configGroup, kConfigGroup);
         EXPECT_EQ(modes.front().vsyncPeriod, kVsyncPeriod);
         EXPECT_EQ(modes.front().vrrConfig, vrrConfig);
+        EXPECT_EQ(modes.front().hdrOutputType, hdrOutputType);
         EXPECT_EQ(modes.front().dpiX, kDpi);
         EXPECT_EQ(modes.front().dpiY, kDpi);