<h3>Contribution description</h3>
<p>This PR contributes a <code>periph_timer</code> driver implementation for the RP2040 MCU.</p>

<h3>Testing procedure</h3>
<p>tests/periph_timer_periodic:</p>
<p>2021-07-08 14:57:32,736 # START<br>
2021-07-08 14:57:32,743 # main(): This is RIOT! (Version: 2021.10-devel-27-g732dc-cpu_rp2040_periph_timer)<br>
2021-07-08 14:57:32,743 #<br>
2021-07-08 14:57:32,746 # Running Timer 0 at 1000000 Hz.<br>
2021-07-08 14:57:32,749 # One counter cycle is 25000 ticks or 25 ms<br>
2021-07-08 14:57:32,752 # Will print 'tick' every cycle.<br>
2021-07-08 14:57:32,752 #<br>
2021-07-08 14:57:32,752 # TEST START<br>
2021-07-08 14:57:32,779 # [0] tick<br>
2021-07-08 14:57:32,803 # [0] tick<br>
2021-07-08 14:57:32,830 # [0] tick<br>
2021-07-08 14:57:32,856 # [0] tick<br>
2021-07-08 14:57:32,881 # [0] tick<br>
2021-07-08 14:57:32,907 # [0] tick<br>
2021-07-08 14:57:32,933 # [0] tick<br>
2021-07-08 14:57:32,958 # [0] tick<br>
2021-07-08 14:57:32,984 # [0] tick<br>
2021-07-08 14:57:33,010 # [0] tick<br>
2021-07-08 14:57:33,036 # [0] tick<br>
2021-07-08 14:57:33,061 # [0] tick<br>
2021-07-08 14:57:33,061 #<br>
2021-07-08 14:57:33,062 # Cycles:<br>
2021-07-08 14:57:33,063 # channel 0 = 12        [OK]<br>
2021-07-08 14:57:33,065 # TEST SUCCEEDED</p>
<p>tests/periph_timer:</p>
<p>2021-07-08 14:58:18,177 # START<br>
2021-07-08 14:58:18,184 # main(): This is RIOT! (Version: 2021.10-devel-27-g732dc-cpu_rp2040_periph_timer)<br>
2021-07-08 14:58:18,185 #<br>
2021-07-08 14:58:18,187 # Test for peripheral TIMERs<br>
2021-07-08 14:58:18,187 #<br>
2021-07-08 14:58:18,189 # Available timers: 1<br>
2021-07-08 14:58:18,189 #<br>
2021-07-08 14:58:18,190 # Testing TIMER_0:<br>
2021-07-08 14:58:18,193 # TIMER_0: initialization successful<br>
2021-07-08 14:58:18,195 # TIMER_0: stopped<br>
2021-07-08 14:58:18,197 # TIMER_0: set channel 0 to 5000<br>
2021-07-08 14:58:18,200 # TIMER_0: set channel 1 to 10000<br>
2021-07-08 14:58:18,203 # TIMER_0: set channel 2 to 15000<br>
2021-07-08 14:58:18,206 # TIMER_0: set channel 3 to 20000<br>
2021-07-08 14:58:18,207 # TIMER_0: starting<br>
2021-07-08 14:58:18,232 # TIMER_0: channel 0 fired at SW count    59902 - init:    59902<br>
2021-07-08 14:58:18,237 # TIMER_0: channel 1 fired at SW count   119653 - diff:    59751<br>
2021-07-08 14:58:18,243 # TIMER_0: channel 2 fired at SW count   179554 - diff:    59901<br>
2021-07-08 14:58:18,248 # TIMER_0: channel 3 fired at SW count   239461 - diff:    59907<br>
2021-07-08 14:58:18,249 #<br>
2021-07-08 14:58:18,250 # TEST SUCCEEDED</p>
<p>tests/periph_timer_short_relative_set:</p>
<p>2021-07-08 14:59:29,875 # START<br>
2021-07-08 14:59:29,882 # main(): This is RIOT! (Version: 2021.10-devel-27-g732dc-cpu_rp2040_periph_timer)<br>
2021-07-08 14:59:29,882 #<br>
2021-07-08 14:59:29,886 # Test for peripheral TIMER short timer_set()<br>
2021-07-08 14:59:29,886 #<br>
2021-07-08 14:59:29,891 # This test tries timer_set() with decreasing intervals down to 0.<br>
2021-07-08 14:59:29,898 # You should see lines like 'interval  ok', followed by a success message.<br>
2021-07-08 14:59:29,902 # On failure, this test prints an error message.<br>
2021-07-08 14:59:29,902 #<br>
2021-07-08 14:59:29,905 # testing periph_timer 0, freq 1000000<br>
2021-07-08 14:59:29,906 # interval 99 ok<br>
2021-07-08 14:59:29,908 # interval 98 ok<br>
2021-07-08 14:59:29,909 # interval 97 ok<br>
2021-07-08 14:59:29,910 # interval 96 ok<br>
2021-07-08 14:59:29,912 # interval 95 ok<br>
2021-07-08 14:59:29,913 # interval 94 ok<br>
2021-07-08 14:59:29,914 # interval 93 ok<br>
2021-07-08 14:59:29,916 # interval 92 ok<br>
2021-07-08 14:59:29,917 # interval 91 ok<br>
2021-07-08 14:59:29,918 # interval 90 ok<br>
2021-07-08 14:59:29,920 # interval 89 ok<br>
2021-07-08 14:59:29,921 # interval 88 ok<br>
2021-07-08 14:59:29,922 # interval 87 ok<br>
2021-07-08 14:59:29,923 # interval 86 ok<br>
2021-07-08 14:59:29,925 # interval 85 ok<br>
2021-07-08 14:59:29,927 # interval 84 ok<br>
2021-07-08 14:59:29,927 # interval 83 ok<br>
2021-07-08 14:59:29,929 # interval 82 ok<br>
2021-07-08 14:59:29,930 # interval 81 ok<br>
2021-07-08 14:59:29,931 # interval 80 ok<br>
2021-07-08 14:59:29,933 # interval 79 ok<br>
2021-07-08 14:59:29,934 # interval 78 ok<br>
2021-07-08 14:59:29,935 # interval 77 ok<br>
2021-07-08 14:59:29,937 # interval 76 ok<br>
2021-07-08 14:59:29,938 # interval 75 ok<br>
2021-07-08 14:59:29,939 # interval 74 ok<br>
2021-07-08 14:59:29,940 # interval 73 ok<br>
2021-07-08 14:59:29,942 # interval 72 ok<br>
2021-07-08 14:59:29,943 # interval 71 ok<br>
2021-07-08 14:59:29,945 # interval 70 ok<br>
2021-07-08 14:59:29,946 # interval 69 ok<br>
2021-07-08 14:59:29,947 # interval 68 ok<br>
2021-07-08 14:59:29,948 # interval 67 ok<br>
2021-07-08 14:59:29,950 # interval 66 ok<br>
2021-07-08 14:59:29,951 # interval 65 ok<br>
2021-07-08 14:59:29,952 # interval 64 ok<br>
2021-07-08 14:59:29,953 # interval 63 ok<br>
2021-07-08 14:59:29,955 # interval 62 ok<br>
2021-07-08 14:59:29,956 # interval 61 ok<br>
2021-07-08 14:59:29,957 # interval 60 ok<br>
2021-07-08 14:59:29,959 # interval 59 ok<br>
2021-07-08 14:59:29,960 # interval 58 ok<br>
2021-07-08 14:59:29,961 # interval 57 ok<br>
2021-07-08 14:59:29,963 # interval 56 ok<br>
2021-07-08 14:59:29,965 # interval 55 ok<br>
2021-07-08 14:59:29,966 # interval 54 ok<br>
2021-07-08 14:59:29,966 # interval 53 ok<br>
2021-07-08 14:59:29,968 # interval 52 ok<br>
2021-07-08 14:59:29,969 # interval 51 ok<br>
2021-07-08 14:59:29,970 # interval 50 ok<br>
2021-07-08 14:59:29,972 # interval 49 ok<br>
2021-07-08 14:59:29,973 # interval 48 ok<br>
2021-07-08 14:59:29,974 # interval 47 ok<br>
2021-07-08 14:59:29,976 # interval 46 ok<br>
2021-07-08 14:59:29,977 # interval 45 ok<br>
2021-07-08 14:59:29,978 # interval 44 ok<br>
2021-07-08 14:59:29,980 # interval 43 ok<br>
2021-07-08 14:59:29,981 # interval 42 ok<br>
2021-07-08 14:59:29,982 # interval 41 ok<br>
2021-07-08 14:59:29,983 # interval 40 ok<br>
2021-07-08 14:59:29,985 # interval 39 ok<br>
2021-07-08 14:59:29,986 # interval 38 ok<br>
2021-07-08 14:59:29,987 # interval 37 ok<br>
2021-07-08 14:59:29,989 # interval 36 ok<br>
2021-07-08 14:59:29,990 # interval 35 ok<br>
2021-07-08 14:59:29,992 # interval 34 ok<br>
2021-07-08 14:59:29,993 # interval 33 ok<br>
2021-07-08 14:59:29,994 # interval 32 ok<br>
2021-07-08 14:59:29,995 # interval 31 ok<br>
2021-07-08 14:59:29,996 # interval 30 ok<br>
2021-07-08 14:59:29,998 # interval 29 ok<br>
2021-07-08 14:59:29,999 # interval 28 ok<br>
2021-07-08 14:59:30,000 # interval 27 ok<br>
2021-07-08 14:59:30,002 # interval 26 ok<br>
2021-07-08 14:59:30,003 # interval 25 ok<br>
2021-07-08 14:59:30,004 # interval 24 ok<br>
2021-07-08 14:59:30,006 # interval 23 ok<br>
2021-07-08 14:59:30,008 # interval 22 ok<br>
2021-07-08 14:59:30,009 # interval 21 ok<br>
2021-07-08 14:59:30,010 # interval 20 ok<br>
2021-07-08 14:59:30,011 # interval 19 ok<br>
2021-07-08 14:59:30,012 # interval 18 ok<br>
2021-07-08 14:59:30,013 # interval 17 ok<br>
2021-07-08 14:59:30,015 # interval 16 ok<br>
2021-07-08 14:59:30,016 # interval 15 ok<br>
2021-07-08 14:59:30,017 # interval 14 ok<br>
2021-07-08 14:59:30,019 # interval 13 ok<br>
2021-07-08 14:59:30,020 # interval 12 ok<br>
2021-07-08 14:59:30,021 # interval 11 ok<br>
2021-07-08 14:59:30,022 # interval 10 ok<br>
2021-07-08 14:59:30,024 # interval 9 ok<br>
2021-07-08 14:59:30,025 # interval 8 ok<br>
2021-07-08 14:59:30,026 # interval 7 ok<br>
2021-07-08 14:59:30,027 # interval 6 ok<br>
2021-07-08 14:59:30,029 # interval 5 ok<br>
2021-07-08 14:59:30,030 # interval 4 ok<br>
2021-07-08 14:59:30,031 # interval 3 ok<br>
2021-07-08 14:59:30,032 # interval 2 ok<br>
2021-07-08 14:59:30,033 # interval 1 ok<br>
2021-07-08 14:59:30,035 # interval 0 ok<br>
2021-07-08 14:59:30,035 #<br>
2021-07-08 14:59:30,036 # TEST SUCCEEDED</p>

<h3>Issues/PRs references</h3>


<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/RIOT-OS/RIOT/pull/16627'>https://github.com/RIOT-OS/RIOT/pull/16627</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>cpu/rpx0xx: implement periph_uart</li>
  <li>boards/rpi-pico: add the Raspberry Pi Pico</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! boards/rpi-pico: add the Raspberry Pi Pico</li>
  <li>fixup! boards/rpi-pico: add the Raspberry Pi Pico</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! boards/rpi-pico: add the Raspberry Pi Pico</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! cpu/rpx0xx: implement periph_uart</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! boards/rpi-pico: add the Raspberry Pi Pico</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! cpu/rpx0xx: implement periph_uart</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! boards/rpi-pico: add the Raspberry Pi Pico</li>
  <li>fixup! cpu/rpx0xx: implement periph_uart</li>
  <li>fixup! cpu/rpx0xx: add support for the RP2040 MCU</li>
  <li>fixup! boards/rpi-pico: add the Raspberry Pi Pico</li>
  <li>fixup! cpu/rpx0xx: implement periph_uart</li>
  <li>fixup! cpu/rpx0xx: implement periph_uart</li>
  <li>cpu/rpx0xx: implement periph timer</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-911f6008d4557e65207fdcc262483bd7a16a4a93cba27ddee42328a91c08f87c">boards/rpi-pico/Kconfig</a>
    (17)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-e1673bab70458ab4c1549d8afeabb7f8d688ccf68b679bd6eab06adf7288ede0">boards/rpi-pico/Makefile</a>
    (3)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-972760ae6359dc62b37694ba283e8738a6730da9c513340c6ba4f89710d624eb">boards/rpi-pico/Makefile.dep</a>
    (3)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-80d79e8f85fdeb79ccde7c25f3725a1f38ef1ac6f9d7bc7b206f232cb4423d61">boards/rpi-pico/Makefile.features</a>
    (5)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-8458842de372767ab08e927a92c1633c3f0afed7a68439e97486bf71fc4d2720">boards/rpi-pico/Makefile.include</a>
    (2)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-57371854ec26b7454ffb3af833c2e6534d4e5c7c6141173c37b977969373d68f">boards/rpi-pico/board.c</a>
    (29)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-36e8f14e867bd7fd27f24cd56b264020931c55222cff01f07e7d2dc3673b602c">boards/rpi-pico/dist/openocd.cfg</a>
    (3)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-e8fff8aa0e6073f09fdaf75b9a8e927fbbbbe82dab93b43383399a2f157b22c8">boards/rpi-pico/doc.txt</a>
    (142)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-2eb524186cb4538617aa306d4cb6a0a67f5a1bc3f7b7c849e2fd671152189191">boards/rpi-pico/include/board.h</a>
    (52)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-d3e2491058ebfebf4c5c84a7310e2e381a46fb6b728ef8b230fa43a34afdba3d">boards/rpi-pico/include/gpio_params.h</a>
    (48)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-6f193d57314a6c9004df698dd1b0d9649deb2e3befd085a835921d5048222926">boards/rpi-pico/include/periph_conf.h</a>
    (86)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-8e2a648b40e26241b261cb8a9bf3e2e5e0d81137d01e7c413895d82769e85923">cpu/rpx0xx/Kconfig</a>
    (33)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-f5082fc41450a33ecff55d9433b92379004e6448223b52af4a366fcfe4f0033e">cpu/rpx0xx/Makefile</a>
    (5)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-6529ffc3f13b807d019718ea07e97567abbbf5f49111c3766b514fb157f89fd6">cpu/rpx0xx/Makefile.dep</a>
    (1)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-a7e0ec15865c041276fd0574a6eda40b2718f757caff5e1602f08f550ede410f">cpu/rpx0xx/Makefile.features</a>
    (8)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-57cf37bef13e3f40a54f846f4378dc6475d63e9691eab7f60c635fc627997aed">cpu/rpx0xx/Makefile.include</a>
    (19)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-4a5d59cce4f592577b784a67f84010f45e1fbc8d303ecc63dedb9a09b519ce6d">cpu/rpx0xx/boot2_w25q080_padded_checksummed.S</a>
    (23)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-91d7ac9cc6bee27075fde56fd5834fb44e39573cd81517d8251557a0ef2b3385">cpu/rpx0xx/clock.c</a>
    (179)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-8aeb53119bdf3577668d1c28a62831fa0f4293aca6314571c5d6927c2f4a5d53">cpu/rpx0xx/cpu.c</a>
    (96)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-cdd6e58df50b607deca55b4696d57cc799653638bd884183f3a1ec600ba8a2cf">cpu/rpx0xx/doc.txt</a>
    (9)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-e2e8dbdc67df107c0403c515fe514fefdb64df8732411b86c14e58ab38c77160">cpu/rpx0xx/include/.gitignore</a>
    (1)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-8e78b9a6b1cb8413c581affc06a0062c630444602c04a5085a4b3db6383d6bde">cpu/rpx0xx/include/cpu_conf.h</a>
    (47)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-42218d5a09a350fe378adc08e871a1d79ec6dad94bc226fa2206d1caf102e8c9">cpu/rpx0xx/include/io_reg.h</a>
    (138)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-0b053b9b5e88f5aea8badb5f3e44718058743c2e5dbb7287a79dd158557ec2d2">cpu/rpx0xx/include/periph_cpu.h</a>
    (694)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-35006c6709dcfe67c0e3047dfceedf2e705a034c8774a171885e70c45f0f031e">cpu/rpx0xx/include/vendor/RP2040.h</a>
    (29410)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-6529bae9d8ebe4232b0eea0112d75cb086054e7c266e55a57ed1199858d0bc2e">cpu/rpx0xx/include/vendor/system_RP2040.h</a>
    (67)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-776c62441974e75750bcbea8c91cba15a53d5821a0c8a124cccb332624f2c3f1">cpu/rpx0xx/ldscripts/RP2040.ld</a>
    (46)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-e3440ee42d30617fc35378a92310704c22c31e30b6cb1c685f59272d43ba9d29">cpu/rpx0xx/periph/Makefile</a>
    (1)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-5ca2fc675272fe0b1ec2d65eff316741399065879887c719e79ae410163ce648">cpu/rpx0xx/periph/gpio.c</a>
    (222)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-9ee6c25c2631fca7fc6c444675df966703cb141b7b18630dbad03585791f1746">cpu/rpx0xx/periph/timer.c</a>
    (241)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-0206cdb96c4f524493133cff7b6996da618164fbf9db3e78d31199ce1c65a5f1">cpu/rpx0xx/periph/uart.c</a>
    (205)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-8b13f1f933422eadf202d1f525807748eb10810652d77725b5f3cd58fb46bdce">cpu/rpx0xx/pll.c</a>
    (119)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-5ee12494411637a66c7a1afbbaf080f7ff79fe5f0a67e4fca4788c244754f7f8">cpu/rpx0xx/rosc.c</a>
    (57)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-1affe00285650ca65daa08e276751949696667b647eb40237d634fd1d83375cd">cpu/rpx0xx/vectors.c</a>
    (95)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-d3a3d86738c6ed2a3002d64e93e17522fbb8b13fd47ad2c275280694432a2af5">cpu/rpx0xx/vendor/boot_stage2/.gitignore</a>
    (1)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-d6e23d41710bda806a0b65c5ee9caaf9a24be5f1fa7046618ce2a9fd67b0a64b">cpu/rpx0xx/vendor/boot_stage2/Makefile</a>
    (33)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-ebd02ec6b481bc5efcebb7220db2dafd273ceb7d2a7da7c7b77c2fa8c6aceca6">cpu/rpx0xx/vendor/boot_stage2/README.md</a>
    (5)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-5f3407be02b45d75bd508a3eef3caf8082718fb8a0389ea377ca4994dbc0d967">cpu/rpx0xx/vendor/boot_stage2/boot2_at25sf128a.S</a>
    (285)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-e4e01e86d8dd821f6426a295420574c14c613fab06d7fa57e8a8a813e7d20439">cpu/rpx0xx/vendor/boot_stage2/boot2_generic_03h.S</a>
    (103)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-84703cb35d870db9aca4191c8ce278bf87fd93daf9dce7802134f4c076c8a6ce">cpu/rpx0xx/vendor/boot_stage2/boot2_is25lp080.S</a>
    (262)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-ed879b4b78b7bc3fc09e36121314e05033853ca15f910a9581c98f55bdfbb773">cpu/rpx0xx/vendor/boot_stage2/boot2_usb_blinky.S</a>
    (53)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-13d7cec191de0e572edca3d9507466ae1fb57ccfe70f28250915a2547367c627">cpu/rpx0xx/vendor/boot_stage2/boot2_w25q080.S</a>
    (287)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-3320f2d3e97a8def966cc484cc2fb47fe61ffa650c23ebc8f90d3eb944028816">cpu/rpx0xx/vendor/boot_stage2/boot2_w25x10cl.S</a>
    (196)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-2cd3ba15b7e4db2a2370b95515e7e6f401be41e554c415f6c935ed87b287cea5">cpu/rpx0xx/vendor/boot_stage2/boot_stage2.ld</a>
    (13)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-37d083f96be2a1e6e6912abd0da300ac8abf65f016095124bbfd13bb9328c335">cpu/rpx0xx/vendor/boot_stage2/compile_time_choice.S</a>
    (19)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-28b4c138b3db34980fc9d5bee5a56536c8d13567c9d36a11f1c2065dd917df02">cpu/rpx0xx/vendor/boot_stage2/config.h</a>
    (92)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-b547c6d26bac1c23e16688a42c8f2d725785d87a60539ecc577fe0352d0a094b">cpu/rpx0xx/vendor/boot_stage2/include/boot2_helpers/exit_from_boot2.S</a>
    (28)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-4cc58bb3584e80a45a2d89b2fcf8160f1b8f47d7a3dd62bb82acdb17a2149bc5">cpu/rpx0xx/vendor/boot_stage2/include/boot2_helpers/read_flash_sreg.S</a>
    (30)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-ae9fafaf63704ce038460698c9584b9522c57aa1bb9c26192ae27a3eae02722c">cpu/rpx0xx/vendor/boot_stage2/include/boot2_helpers/wait_ssi_ready.S</a>
    (26)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-625f055d86fa3bbfe45f4f21bfef7f2e5fe70add164d3ff790debc2e16253e41">cpu/rpx0xx/vendor/boot_stage2/include/hardware/platform_defs.h</a>
    (55)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-3f7444b376078bb3b43b04d7348e35650a966b946ad41cc4d2697ad00298f717">cpu/rpx0xx/vendor/boot_stage2/include/hardware/regs/addressmap.h</a>
    (74)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-4cf63ed1ffaa720e994d9ae17972d0b212547b673d0ca5b26991c8aa95967333">cpu/rpx0xx/vendor/boot_stage2/include/hardware/regs/m0plus.h</a>
    (1149)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-3a78f30d81f1980308812eee199c1bbb14c828a5fba7bc15c1e32b4f2eaf6d94">cpu/rpx0xx/vendor/boot_stage2/include/hardware/regs/pads_qspi.h</a>
    (454)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-ca7b53ce08fa6498c30dfd03bb49b86e30e64cfc4dcbd051f5a9fdd14cd55b7c">cpu/rpx0xx/vendor/boot_stage2/include/hardware/regs/ssi.h</a>
    (809)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-0da49a5df43fd4ef396dc9b819f04667d9ad63e40ba90dabcd5ff29661289d45">cpu/rpx0xx/vendor/boot_stage2/include/pico/asm_helper.S</a>
    (38)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-27c028097386c3f4886e8830fc8890749cb3bde14c87d6403bb37675c2ddcdc2">cpu/rpx0xx/vendor/boot_stage2/include/pico/config.h</a>
    (85)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-872470e0c3f3fc5483ab3c84764b8e69c0da4695ecca7d14d31ca56ad0d396a0">cpu/rpx0xx/vendor/boot_stage2/include/pico/platform.h</a>
    (180)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-8989f26737bc3252ccf1c60b00980d3910eecee7657511de5812a6ec7baf994d">cpu/rpx0xx/vendor/boot_stage2/pad_checksum</a>
    (55)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-4ea56859174c72ff9f3212ae05b6b48556322471a066d9728bf8e85d93611c42">cpu/rpx0xx/vendor/boot_stage2/read_flash_sreg.S</a>
    (30)
  </li>
  <li>
    <strong>A</strong>
    <a href="https://github.com/RIOT-OS/RIOT/pull/16627/files#diff-7ea69fb35bea34087bde0ffccaae4b9546044857a50ebb75b870dbb582f72ad4">cpu/rpx0xx/xosc.c</a>
    (48)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/RIOT-OS/RIOT/pull/16627.patch'>https://github.com/RIOT-OS/RIOT/pull/16627.patch</a></li>
  <li><a href='https://github.com/RIOT-OS/RIOT/pull/16627.diff'>https://github.com/RIOT-OS/RIOT/pull/16627.diff</a></li>
</ul>

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