diff --git a/audio/aidl/default/Android.bp b/audio/aidl/default/Android.bp
index 8596466..bb8d76f 100644
--- a/audio/aidl/default/Android.bp
+++ b/audio/aidl/default/Android.bp
@@ -88,7 +88,6 @@
         "primary/PrimaryMixer.cpp",
         "primary/StreamPrimary.cpp",
         "r_submix/ModuleRemoteSubmix.cpp",
-        "r_submix/RemoteSubmixUtils.cpp",
         "r_submix/SubmixRoute.cpp",
         "r_submix/StreamRemoteSubmix.cpp",
         "stub/ModuleStub.cpp",
diff --git a/audio/aidl/default/Configuration.cpp b/audio/aidl/default/Configuration.cpp
index 0fbf55b..8e02e7d 100644
--- a/audio/aidl/default/Configuration.cpp
+++ b/audio/aidl/default/Configuration.cpp
@@ -81,8 +81,6 @@
         deviceExt.device.address = "bottom";
     } else if (devType == AudioDeviceType::IN_MICROPHONE_BACK && connection.empty()) {
         deviceExt.device.address = "back";
-    } else if (devType == AudioDeviceType::IN_SUBMIX || devType == AudioDeviceType::OUT_SUBMIX) {
-        deviceExt.device.address = "0";
     }
     deviceExt.device.type.connection = std::move(connection);
     deviceExt.flags = flags;
@@ -291,15 +289,21 @@
 //
 // Device ports:
 //  * "Remote Submix Out", OUT_SUBMIX
-//    - profile PCM 16-bit; STEREO; 48000
+//    - no profiles specified
 //  * "Remote Submix In", IN_SUBMIX
-//    - profile PCM 16-bit; STEREO; 48000
+//    - no profiles specified
 //
 // Mix ports:
-//  * "r_submix output", 1 max open, 1 max active stream
-//    - profile PCM 16-bit; STEREO; 48000
-//  * "r_submix input", 1 max open, 1 max active stream
-//    - profile PCM 16-bit; STEREO; 48000
+//  * "r_submix output", unlimited max open, unlimited max active stream
+//    - profile PCM 16-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
+//    - profile PCM 24-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
+//    - profile PCM 32-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
+//    - profile PCM 32-bit float; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
+//  * "r_submix input", unlimited max open, unlimited max active stream
+//    - profile PCM 16-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
+//    - profile PCM 24-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
+//    - profile PCM 32-bit; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
+//    - profile PCM 32-bit float; MONO, STEREO; 8000, 11025, 16000, 32000, 44100, 48000
 //
 // Routes:
 //  "r_submix output" -> "Remote Submix Out"
@@ -308,6 +312,19 @@
 std::unique_ptr<Configuration> getRSubmixConfiguration() {
     static const Configuration configuration = []() {
         Configuration c;
+        const std::vector<AudioProfile> standardPcmAudioProfiles{
+                createProfile(PcmType::FLOAT_32_BIT,
+                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
+                              {8000, 11025, 16000, 32000, 44100, 48000}),
+                createProfile(PcmType::INT_32_BIT,
+                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
+                              {8000, 11025, 16000, 32000, 44100, 48000}),
+                createProfile(PcmType::INT_24_BIT,
+                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
+                              {8000, 11025, 16000, 32000, 44100, 48000}),
+                createProfile(PcmType::INT_16_BIT,
+                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
+                              {8000, 11025, 16000, 32000, 44100, 48000})};
 
         // Device ports
 
@@ -315,28 +332,26 @@
                 createPort(c.nextPortId++, "Remote Submix Out", 0, false,
                            createDeviceExt(AudioDeviceType::OUT_SUBMIX, 0,
                                            AudioDeviceDescription::CONNECTION_VIRTUAL));
-        rsubmixOutDevice.profiles.push_back(
-                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
         c.ports.push_back(rsubmixOutDevice);
+        c.connectedProfiles[rsubmixOutDevice.id] = standardPcmAudioProfiles;
 
-        AudioPort rsubmixInDevice = createPort(c.nextPortId++, "Remote Submix In", 0, true,
-                                               createDeviceExt(AudioDeviceType::IN_SUBMIX, 0));
-        rsubmixInDevice.profiles.push_back(
-                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
+        AudioPort rsubmixInDevice =
+                createPort(c.nextPortId++, "Remote Submix In", 0, true,
+                           createDeviceExt(AudioDeviceType::IN_SUBMIX, 0,
+                                           AudioDeviceDescription::CONNECTION_VIRTUAL));
         c.ports.push_back(rsubmixInDevice);
+        c.connectedProfiles[rsubmixInDevice.id] = standardPcmAudioProfiles;
 
         // Mix ports
 
         AudioPort rsubmixOutMix =
-                createPort(c.nextPortId++, "r_submix output", 0, false, createPortMixExt(1, 1));
-        rsubmixOutMix.profiles.push_back(
-                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
+                createPort(c.nextPortId++, "r_submix output", 0, false, createPortMixExt(0, 0));
+        rsubmixOutMix.profiles = standardPcmAudioProfiles;
         c.ports.push_back(rsubmixOutMix);
 
         AudioPort rsubmixInMix =
-                createPort(c.nextPortId++, "r_submix input", 0, true, createPortMixExt(1, 1));
-        rsubmixInMix.profiles.push_back(
-                createProfile(PcmType::INT_16_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));
+                createPort(c.nextPortId++, "r_submix input", 0, true, createPortMixExt(0, 0));
+        rsubmixInMix.profiles = standardPcmAudioProfiles;
         c.ports.push_back(rsubmixInMix);
 
         c.routes.push_back(createRoute({rsubmixOutMix}, rsubmixOutDevice));
diff --git a/audio/aidl/default/include/core-impl/ModuleRemoteSubmix.h b/audio/aidl/default/include/core-impl/ModuleRemoteSubmix.h
index e87be3d..c4bf7b9 100644
--- a/audio/aidl/default/include/core-impl/ModuleRemoteSubmix.h
+++ b/audio/aidl/default/include/core-impl/ModuleRemoteSubmix.h
@@ -26,8 +26,6 @@
 
   private:
     // IModule interfaces
-    ndk::ScopedAStatus getTelephony(std::shared_ptr<ITelephony>* _aidl_return) override;
-    ndk::ScopedAStatus getBluetooth(std::shared_ptr<IBluetooth>* _aidl_return) override;
     ndk::ScopedAStatus getMicMute(bool* _aidl_return) override;
     ndk::ScopedAStatus setMicMute(bool in_mute) override;
 
@@ -49,9 +47,6 @@
             const std::vector<::aidl::android::media::audio::common::AudioPortConfig*>& sources,
             const std::vector<::aidl::android::media::audio::common::AudioPortConfig*>& sinks)
             override;
-    void onExternalDeviceConnectionChanged(
-            const ::aidl::android::media::audio::common::AudioPort& audioPort,
-            bool connected) override;
     ndk::ScopedAStatus onMasterMuteChanged(bool mute) override;
     ndk::ScopedAStatus onMasterVolumeChanged(float volume) override;
 };
diff --git a/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp b/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp
index 9be7837..adea877 100644
--- a/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp
+++ b/audio/aidl/default/r_submix/ModuleRemoteSubmix.cpp
@@ -19,8 +19,8 @@
 #include <vector>
 
 #include <android-base/logging.h>
+#include <error/expected_utils.h>
 
-#include "RemoteSubmixUtils.h"
 #include "core-impl/ModuleRemoteSubmix.h"
 #include "core-impl/StreamRemoteSubmix.h"
 
@@ -33,18 +33,6 @@
 
 namespace aidl::android::hardware::audio::core {
 
-ndk::ScopedAStatus ModuleRemoteSubmix::getTelephony(std::shared_ptr<ITelephony>* _aidl_return) {
-    *_aidl_return = nullptr;
-    LOG(DEBUG) << __func__ << ": returning null";
-    return ndk::ScopedAStatus::ok();
-}
-
-ndk::ScopedAStatus ModuleRemoteSubmix::getBluetooth(std::shared_ptr<IBluetooth>* _aidl_return) {
-    *_aidl_return = nullptr;
-    LOG(DEBUG) << __func__ << ": returning null";
-    return ndk::ScopedAStatus::ok();
-}
-
 ndk::ScopedAStatus ModuleRemoteSubmix::getMicMute(bool* _aidl_return __unused) {
     LOG(DEBUG) << __func__ << ": is not supported";
     return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
@@ -70,23 +58,26 @@
 }
 
 ndk::ScopedAStatus ModuleRemoteSubmix::populateConnectedDevicePort(AudioPort* audioPort) {
-    LOG(VERBOSE) << __func__ << ": Profiles already populated by Configuration";
-    for (auto profile : audioPort->profiles) {
-        for (auto channelMask : profile.channelMasks) {
-            if (!r_submix::isChannelMaskSupported(channelMask)) {
-                LOG(ERROR) << __func__ << ": the profile " << profile.name
-                           << " has unsupported channel mask : " << channelMask.toString();
-                return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
-            }
-        }
-        for (auto sampleRate : profile.sampleRates) {
-            if (!r_submix::isSampleRateSupported(sampleRate)) {
-                LOG(ERROR) << __func__ << ": the profile " << profile.name
-                           << " has unsupported sample rate : " << sampleRate;
-                return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
-            }
-        }
+    // Find the corresponding mix port and copy its profiles.
+    std::vector<AudioRoute> routes;
+    // At this moment, the port has the same ID as the template port, see connectExternalDevice.
+    RETURN_STATUS_IF_ERROR(getAudioRoutesForAudioPort(audioPort->id, &routes));
+    if (routes.empty()) {
+        LOG(ERROR) << __func__ << ": no routes found for the port " << audioPort->toString();
+        return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
     }
+    const auto& route = *routes.begin();
+    AudioPort mixPort;
+    if (route.sinkPortId == audioPort->id) {
+        if (route.sourcePortIds.empty()) {
+            LOG(ERROR) << __func__ << ": invalid route " << route.toString();
+            return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+        }
+        RETURN_STATUS_IF_ERROR(getAudioPort(*route.sourcePortIds.begin(), &mixPort));
+    } else {
+        RETURN_STATUS_IF_ERROR(getAudioPort(route.sinkPortId, &mixPort));
+    }
+    audioPort->profiles = mixPort.profiles;
     return ndk::ScopedAStatus::ok();
 }
 
@@ -106,12 +97,6 @@
     return ndk::ScopedAStatus::ok();
 }
 
-void ModuleRemoteSubmix::onExternalDeviceConnectionChanged(
-        const ::aidl::android::media::audio::common::AudioPort& audioPort __unused,
-        bool connected __unused) {
-    LOG(DEBUG) << __func__ << ": do nothing and return";
-}
-
 ndk::ScopedAStatus ModuleRemoteSubmix::onMasterMuteChanged(bool __unused) {
     LOG(DEBUG) << __func__ << ": is not supported";
     return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
diff --git a/audio/aidl/default/r_submix/RemoteSubmixUtils.cpp b/audio/aidl/default/r_submix/RemoteSubmixUtils.cpp
deleted file mode 100644
index 2f5d17d..0000000
--- a/audio/aidl/default/r_submix/RemoteSubmixUtils.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include <vector>
-
-#include "RemoteSubmixUtils.h"
-
-namespace aidl::android::hardware::audio::core::r_submix {
-
-bool isChannelMaskSupported(const AudioChannelLayout& channelMask) {
-    const static std::vector<AudioChannelLayout> kSupportedChannelMask = {
-            AudioChannelLayout::make<AudioChannelLayout::Tag::layoutMask>(
-                    AudioChannelLayout::LAYOUT_MONO),
-            AudioChannelLayout::make<AudioChannelLayout::Tag::layoutMask>(
-                    AudioChannelLayout::LAYOUT_STEREO)};
-
-    if (std::find(kSupportedChannelMask.begin(), kSupportedChannelMask.end(), channelMask) !=
-        kSupportedChannelMask.end()) {
-        return true;
-    }
-    return false;
-}
-
-bool isSampleRateSupported(int sampleRate) {
-    const static std::vector<int> kSupportedSampleRates = {8000,  11025, 12000, 16000, 22050,
-                                                           24000, 32000, 44100, 48000};
-
-    if (std::find(kSupportedSampleRates.begin(), kSupportedSampleRates.end(), sampleRate) !=
-        kSupportedSampleRates.end()) {
-        return true;
-    }
-    return false;
-}
-
-}  // namespace aidl::android::hardware::audio::core::r_submix
diff --git a/audio/aidl/default/r_submix/RemoteSubmixUtils.h b/audio/aidl/default/r_submix/RemoteSubmixUtils.h
deleted file mode 100644
index 952a992..0000000
--- a/audio/aidl/default/r_submix/RemoteSubmixUtils.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2023 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <aidl/android/media/audio/common/AudioChannelLayout.h>
-#include <aidl/android/media/audio/common/AudioFormatDescription.h>
-
-using aidl::android::media::audio::common::AudioChannelLayout;
-
-namespace aidl::android::hardware::audio::core::r_submix {
-
-bool isChannelMaskSupported(const AudioChannelLayout& channelMask);
-
-bool isSampleRateSupported(int sampleRate);
-
-}  // namespace aidl::android::hardware::audio::core::r_submix
diff --git a/audio/aidl/vts/ModuleConfig.cpp b/audio/aidl/vts/ModuleConfig.cpp
index 8c448a8..7213034 100644
--- a/audio/aidl/vts/ModuleConfig.cpp
+++ b/audio/aidl/vts/ModuleConfig.cpp
@@ -30,6 +30,7 @@
 using aidl::android::hardware::audio::common::isBitPositionFlagSet;
 using aidl::android::hardware::audio::core::IModule;
 using aidl::android::media::audio::common::AudioChannelLayout;
+using aidl::android::media::audio::common::AudioDeviceDescription;
 using aidl::android::media::audio::common::AudioDeviceType;
 using aidl::android::media::audio::common::AudioEncapsulationMode;
 using aidl::android::media::audio::common::AudioFormatDescription;
@@ -96,7 +97,10 @@
             } else {
                 mAttachedSinkDevicePorts.insert(port.id);
             }
-        } else if (port.profiles.empty()) {
+        } else if (devicePort.device.type.connection != AudioDeviceDescription::CONNECTION_VIRTUAL
+                   // The "virtual" connection is used for remote submix which is a dynamic
+                   // device but it can be connected and used w/o external hardware.
+                   && port.profiles.empty()) {
             mExternalDevicePorts.insert(port.id);
         }
     }
diff --git a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
index 6ad130e..03ebd61 100644
--- a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
@@ -1627,14 +1627,17 @@
     if (ports.empty()) {
         GTEST_SKIP() << "No external devices in the module.";
     }
-    AudioPort ignored;
     WithDebugFlags doNotSimulateConnections = WithDebugFlags::createNested(*debug);
     doNotSimulateConnections.flags().simulateDeviceConnections = false;
     ASSERT_NO_FATAL_FAILURE(doNotSimulateConnections.SetUp(module.get()));
     for (const auto& port : ports) {
-        AudioPort portWithData = GenerateUniqueDeviceAddress(port);
-        EXPECT_STATUS(EX_ILLEGAL_STATE, module->connectExternalDevice(portWithData, &ignored))
-                << "static port " << portWithData.toString();
+        AudioPort portWithData = GenerateUniqueDeviceAddress(port), connectedPort;
+        ScopedAStatus status = module->connectExternalDevice(portWithData, &connectedPort);
+        EXPECT_STATUS(EX_ILLEGAL_STATE, status) << "static port " << portWithData.toString();
+        if (status.isOk()) {
+            EXPECT_IS_OK(module->disconnectExternalDevice(connectedPort.id))
+                    << "when disconnecting device port ID " << connectedPort.id;
+        }
     }
 }