diff --git a/.github/workflows/PR-5.x-U20.yaml b/.github/workflows/PR-5.x-U20.yaml
deleted file mode 100644
index 596bdbc633..0000000000
--- a/.github/workflows/PR-5.x-U20.yaml
+++ /dev/null
@@ -1,171 +0,0 @@
-name: PR:5.x U20
-
-on:
-  pull_request:
-    branches:
-      - 5.x
-
-env:
-  EXTRA_CMAKE_OPTIONS: '-DBUILD_DOCS=ON -DPYTHON_DEFAULT_EXECUTABLE=/usr/bin/python3 -DBUILD_EXAMPLES=ON -DOPENCV_ENABLE_NONFREE=ON -DENABLE_CCACHE=OFF'
-  OPENCV_TEST_DATA_PATH: '/opencv_extra/testdata'
-  OPENCV_DOCKER_WORKDIR: '/__w/opencv/opencv'
-  PR_AUTHOR: ${{ github.event.pull_request.user.login }}
-  SOURCE_BRANCH_NAME: ${{ github.head_ref }}
-  TARGET_BRANCH_NAME: ${{ github.base_ref }}
-  ANT_HOME: '/usr/share/ant'
-  PYTHONPATH: /opencv-build/python_loader:$PYTHONPATH
-
-jobs:
-  BuildAndTest:
-    runs-on: ubuntu-20.04
-    defaults:
-      run:
-        shell: bash
-    container:
-      image: quay.io/asenyaev/opencv-ubuntu:20.04
-    steps:
-    - name: PR info
-      run: |
-        echo "PR Author: ${{ env.PR_AUTHOR }}"
-        echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
-        echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
-    - name: Clean
-      run: find . -mindepth 1 -delete
-    - name: Fetch opencv
-      uses: actions/checkout@v3
-      with:
-        repository: opencv/opencv
-        ref: ${{ env.TARGET_BRANCH_NAME }}
-        fetch-depth: 0
-    - name: Merge opencv with ${{ env.SOURCE_BRANCH_NAME }} branch
-      run: |
-        cd ${{ env.OPENCV_DOCKER_WORKDIR }}
-        git config --global --add safe.directory ${{ env.OPENCV_DOCKER_WORKDIR }}
-        git config user.email "opencv.ci"
-        git config user.name "opencv.ci"
-        git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}"
-    - name: Clone opencv_extra
-      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --depth 1 https://github.com/opencv/opencv_extra.git /opencv_extra
-    - name: Configure OpenCV
-      run: |
-        cd /opencv-build
-        cmake -G Ninja ${{ env.EXTRA_CMAKE_OPTIONS }} ${{ env.OPENCV_DOCKER_WORKDIR }}
-    - name: Build OpenCV
-      run: |
-        cd /opencv-build
-        ninja
-    - name: Accuracy:3d
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_3d
-    - name: Accuracy:calib
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_calib
-    - name: Accuracy:core
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_core
-    - name: Accuracy:dnn
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_dnn
-    - name: Accuracy:features2d
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_features2d
-    - name: Accuracy:flann
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_flann
-    - name: Accuracy:gapi
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_gapi
-    - name: Accuracy:highgui
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_highgui
-    - name: Accuracy:imgcodecs
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_imgcodecs
-    - name: Accuracy:imgproc
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_imgproc
-    - name: Accuracy:ml
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_ml
-    - name: Accuracy:objdetect
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_objdetect
-    - name: Accuracy:photo
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_photo
-    - name: Accuracy:stereo
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_stereo
-    - name: Accuracy:stitching
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_stitching
-    - name: Accuracy:video
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_video
-    - name: Accuracy:videoio
-      run: cd /opencv-build && xvfb-run -a bin/opencv_test_videoio
-    - name: Performance:3d
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_3d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:calib
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_calib --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:core
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_core --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:dnn
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_dnn --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:features2d
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_features2d --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:gapi
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_gapi --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:imgcodecs
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_imgcodecs --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:imgproc
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_imgproc --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:objdetect
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_objdetect --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:photo
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_photo --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:stereo
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_stereo --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:stitching
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_stitching --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:video
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_video --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Performance:videoio
-      run: cd /opencv-build && xvfb-run -a bin/opencv_perf_videoio --perf_impl=plain --perf_min_samples=1 --perf_force_samples=1 --perf_verify_sanity --skip_unstable=1
-    - name: Python3
-      run: |
-        cd ${{ env.OPENCV_DOCKER_WORKDIR }}/modules/python/test
-        python3 ./test.py --repo ../../../ -v
-    - name: Java
-      run: cd /opencv-build && xvfb-run -a python3 ${{ env.OPENCV_DOCKER_WORKDIR }}/modules/ts/misc/run.py . -a -t java
-    - name: Save Unit Test Results
-      uses: actions/upload-artifact@v3
-      if: always()
-      with:
-        name: junit-html
-        path: /opencv-build/java_test/testResults/junit-noframes.html
-    - name: Pylint
-      run: cd /opencv-build && cmake --build . --config release --target check_pylint -- -j4
-
-  BuildContrib:
-    runs-on: ubuntu-20.04
-    defaults:
-      run:
-        shell: bash
-    container:
-      image: quay.io/asenyaev/opencv-ubuntu:20.04
-    steps:
-    - name: PR info
-      run: |
-        echo "PR Author: ${{ env.PR_AUTHOR }}"
-        echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
-        echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
-    - name: Clean
-      run: find . -mindepth 1 -delete
-    - name: Fetch opencv
-      uses: actions/checkout@v3
-      with:
-        repository: opencv/opencv
-        ref: ${{ env.TARGET_BRANCH_NAME }}
-        fetch-depth: 0
-    - name: Merge opencv with a test branch
-      run: |
-        cd ${{ env.OPENCV_DOCKER_WORKDIR }}
-        git config --global --add safe.directory ${{ env.OPENCV_DOCKER_WORKDIR }}
-        git config user.email "opencv.ci"
-        git config user.name "opencv.ci"
-        git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}"
-    - name: Clone opencv_contrib
-      run: git clone --single-branch --branch ${{ env.TARGET_BRANCH_NAME }} --depth 1 https://github.com/opencv/opencv_contrib.git /opencv_contrib
-    - name: Configure OpenCV Contrib
-      run: |
-        cd /opencv-contrib-build
-        cmake -G Ninja ${{ env.EXTRA_CMAKE_OPTIONS }} -DOPENCV_EXTRA_MODULES_PATH=/opencv_contrib/modules ${{ env.OPENCV_DOCKER_WORKDIR }}
-    - name: Build OpenCV Contrib
-      run: |
-        cd /opencv-contrib-build
-        ninja
diff --git a/.github/workflows/PR-5.x.yaml b/.github/workflows/PR-5.x.yaml
new file mode 100644
index 0000000000..5893a1e141
--- /dev/null
+++ b/.github/workflows/PR-5.x.yaml
@@ -0,0 +1,19 @@
+name: PR:5.x
+
+on:
+  pull_request:
+    branches:
+      - 5.x
+
+jobs:
+  ARM64:
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-ARM64.yaml@main
+
+  U20:
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-U20.yaml@main
+
+  W10:
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-PR-5.x-W10.yaml@main
+
+  TIM-VX:
+    uses: opencv/ci-gha-workflow/.github/workflows/OCV-timvx-backend-tests-4.x.yml@main
\ No newline at end of file
diff --git a/.github/workflows/timvx_backend_tests.yml b/.github/workflows/timvx_backend_tests.yml
deleted file mode 100644
index c45a86f8b2..0000000000
--- a/.github/workflows/timvx_backend_tests.yml
+++ /dev/null
@@ -1,104 +0,0 @@
-name: TIM-VX Backend
-
-on:
-  pull_request:
-    branches: [ 4.x ]
-    types: [ labeled, opened, synchronize, reopened ]
-
-
-jobs:
-  x86-simulator-build-test:
-    runs-on: ubuntu-20.04
-    # Docker image from https://hub.docker.com/r/yuentau/ocv_ubuntu
-    container: docker.io/yuentau/ocv_ubuntu:20.04
-    env:
-      PR_AUTHOR: ${{ github.event.pull_request.user.login }}
-      SOURCE_BRANCH_NAME: ${{ github.head_ref }}
-      TARGET_BRANCH_NAME: ${{ github.base_ref }}
-    steps:
-      - name: info
-        run: |
-          echo "PR Author: ${{ env.PR_AUTHOR }}"
-          echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
-          echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
-      - name: clean
-        shell: bash
-        run: find . -mindepth 1 -delete
-      - name: fetch opencv
-        uses: actions/checkout@v3
-        with:
-          repository: opencv/opencv
-          ref: ${{ env.TARGET_BRANCH_NAME }}
-          fetch-depth: 0
-          path: opencv
-      - name: merge opencv with test branch
-        shell: bash
-        run: |
-          cd opencv
-          git config user.email "opencv.ci"
-          git config user.name "opencv.ci"
-          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}" --allow-unrelated-histories
-      - name: configure
-        run: |
-          cmake -B build -DWITH_TIMVX=ON -DCMAKE_INSTALL_PREFIX=./install -DBUILD_SHARED_LIBS=ON -DBUILD_PERF_TESTS=ON -DBUILD_TESTS=ON -DBUILD_EXAMPLES=OFF -DBUILD_DOCS=OFF -DWITH_OPENCL=OFF opencv
-      - name: build
-        run: cmake --build build --target install -j $(nproc)
-
-  khadas-vim3-tests:
-    if: contains(github.event.pull_request.labels.*.name, 'category:dnn_timvx')
-    concurrency:
-      group: khadas-vim3
-      cancel-in-progress: false
-    runs-on: [self-hosted, Linux, ARM64, khadas-vim3]
-    env:
-      PR_AUTHOR: ${{ github.event.pull_request.user.login }}
-      SOURCE_BRANCH_NAME: ${{ github.head_ref }}
-      TARGET_BRANCH_NAME: ${{ github.base_ref }}
-    steps:
-      - name: info
-        run: |
-          echo "PR Author: ${{ env.PR_AUTHOR }}"
-          echo "Source branch name: ${{ env.SOURCE_BRANCH_NAME }}"
-          echo "Target branch name: ${{ env.TARGET_BRANCH_NAME }}"
-      - name: clean
-        shell: bash
-        run: find . -mindepth 1 -delete
-      - name: fetch opencv
-        uses: actions/checkout@v3
-        with:
-          repository: opencv/opencv
-          ref: ${{ env.TARGET_BRANCH_NAME }}
-          fetch-depth: 0
-          path: opencv
-      - name: merge opencv with test branch
-        shell: bash
-        run: |
-          cd opencv
-          git config user.email "opencv.ci"
-          git config user.name "opencv.ci"
-          git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv" "${{ env.SOURCE_BRANCH_NAME }}" --allow-unrelated-histories
-      - name: fetch opencv_extra
-        uses: actions/checkout@v3
-        with:
-          repository: opencv/opencv_extra
-          path: opencv_extra
-      - name: merge opencv_extra with test branch
-        shell: bash
-        run: |
-          RET=$(git ls-remote --heads "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}")
-          if [[ ! -z "$RET" ]]; then
-            cd opencv_extra
-            git config user.email "opencv.ci"
-            git config user.name "opencv.ci"
-            git pull -v "https://github.com/${{ env.PR_AUTHOR }}/opencv_extra" "${{ env.SOURCE_BRANCH_NAME }}" --allow-unrelated-histories
-          else
-            echo "no merge since ${{ env.PR_AUTHOR }}/opencv_extra does not have branch ${{ env.SOURCE_BRANCH_NAME }}"
-          fi
-      - name: configure
-        run: |
-          cmake -B build -D CMAKE_BUILD_TYPE=RELEASE -DCMAKE_INSTALL_PREFIX=./install -DWITH_TIMVX=ON -DWITH_OPENCL=OFF -DWITH_EIGEN=OFF opencv
-      - name: build
-        run: cmake --build build --target opencv_test_dnn -j 4
-      - name: unit tests for int8 layers
-        run: |
-          OPENCV_TEST_DATA_PATH=./opencv_extra/testdata ./build/bin/opencv_test_dnn --gtest_filter="Test_Int8_layers.*/1"