diff --git a/index.rst b/index.rst
index 95c2503..d03d7c0 100644
--- a/index.rst
+++ b/index.rst
@@ -2,7 +2,7 @@
 Linux FireWire subsystem
 =========================
 
-2023/05/26 Takashi Sakamoto
+2024/04/02 Takashi Sakamoto
 
 .. contents:: Contents
    :depth: 2
@@ -76,6 +76,7 @@
    :hidden:
 
    about
+   phy
    migration
    specifications
    libraw1394
@@ -87,6 +88,10 @@
 
   * The overview of subsystem is available.
 
+* :doc:`Database of PHY device IDs <phy>`
+
+  * The database of PHY device embedded in 1394 OHCI hardware.
+
 * :doc:`Migration from old driver stack <migration>`
 
   * Linux kernel 2.6.37 or before includes old generation of stack. The guide provides the way to
diff --git a/phy.rst b/phy.rst
new file mode 100644
index 0000000..9a1e546
--- /dev/null
+++ b/phy.rst
@@ -0,0 +1,143 @@
+==========================
+Database of PHY device IDs
+==========================
+
+2024/04/02 Takashi Sakamoto
+
+.. contents:: Contents
+   :depth: 2
+   :local:
+   :backlinks: top
+
+Overview
+========
+
+A PHY connects the controller to the actual ports and manages the low-level electrical details.
+
+Most motherboard and add-on card controllers have the PHY integrated in the same chip; most
+embedded devices have a separate PHY chip, often from TI.
+
+For example, for a PCI FireWire controller, the chip model is identified by its PCI ID on the PCI
+side (shown by ``lspci``, and by its !FireWire ID on the FireWire side (shown by ``lsfirewirephy``
+command in
+`linux-firewire-utils <https://git.kernel.org/pub/scm/utils/ieee1394/linux-firewire-utils.git/>`_)
+
+::
+
+          PCI(e) bus  +------------++-----+   FireWire bus
+    ... --+----+------| controller || PHY |----+-----+----- ...
+          |    |      +------------++-----+    |     |
+         ...  ...                             ...   ...
+
+How to add new entries
+======================
+
+Run ``lsfirewirephy`` in
+`linux-firewire-utils <https://git.kernel.org/pub/scm/utils/ieee1394/linux-firewire-utils.git/>`_
+to get a list of PHY vendor/device IDs.
+
+Please post the numbers and the chip name to the
+`linux1394-devel <http://lists.sourceforge.net/mailman/listinfo/linux1394-devel>`_.
+
+PHY device IDs
+==============
+
+* 00000e: `Fujitsu <http://www.fujitsu.com/>`_
+
+  * 00000e:086613 MB86613
+
+* 00004c: `NEC <http://www.nec.co.jp/>`_
+
+  * 00004c:000201 PD728xx “OrangeLink”
+  * 00004c:050160 PD72873 “Firewarden”
+
+* 00053d: `Broadcom <http://www.broadcom.com/>`_ (formerly known as `Agere <http://agere.com/>`_,
+  `LSI <http://www.lsi.com/>`_, `Avago <http://www.avagotech.com/>`_)
+
+  * 00053d:0533xx FW533E “TrueFire”
+  * 00053d:0643xx FW643 “TrueFire”
+  * 00053d:0643xx FW643E “TrueFire”
+  * 00053d:0843xx FW843
+
+* 000cc2: ControlNet India (chip design for O2Micro)
+
+  * 000cc2:401104 OZxxx
+
+* 001163: `System S.p.A. <http://www.system-group.it/>`_ (actually from
+  `VIA <http://www.via.com.tw/>`_, but with a wrong ID)
+
+  * 001163:306001 `VT6306 “Fire” <http://www.via.com.tw/en/products/peripherals/1394/vt6306l/>`_
+  * 001163:306001 `VT6307 “Fire IIM” <http://www.via.com.tw/en/products/peripherals/1394/vt6307ls/>`_
+  * 001163:306001 `VT6308 “Fire IIM” <http://www.via.com.tw/en/products/peripherals/1394/vt6308ps/>`_
+  * 001163:306001 `VT6312 “Fire” <http://www.via.com.tw/en/products/peripherals/1394/vt6312/>`_
+  * 001163:306001 `VT6315 “Fire” <http://www.via.com.tw/en/products/peripherals/1394/vt6315/>`_
+  * 001163:306001 `VT6320 “Fire” <http://www.via.com.tw/en/products/peripherals/1394/vt6320/>`_
+  * 001163:306001 `VT6325 “Fire” <http://www.via.com.tw/en/products/peripherals/1394/vt6325/>`_
+  * 001163:306001 `VT6330 “Fire” <http://www.via.com.tw/en/products/peripherals/1394/vt6330/>`_
+
+* 001454: `Microchip <http://www.microchip.com/>`_ (formerly known as
+  `Symwave <http://symwave.com/>`_)
+
+  * 001454:003181 SW3080 “FirePHY”
+
+* 001b8c: `JMicron <http://www.jmicron.com/>`_
+
+  * 001b8c:038100 `JMB381 <http://www.jmicron.com/JMB38X.html>`_
+
+* 004063: `VIA <http://www.via.com.tw/>`_
+
+  * (see above)
+
+* 00601d: `Broadcom <http://www.broadcom.com/>`_ (formerly known as
+  `Lucent <http://www.lucent.com>`_, `LSI <http://www.lsi.com/>`_,
+  `Avago <http://www.avagotech.com/>`_)
+
+  * 00601d:0322xx FW322 “TrueFire”
+  * 00601d:0323xx FW323 “TrueFire”
+  * 00601d:0802xx FW802 “TrueFire”
+
+* 006037: `NXP <http://www.nxp.com/>`_ (formerly known as `Philips <http://www.philips.com/>`_)
+
+  * 006037:412801 PDI1394P25
+  * 006037:422001 PDI1394P23
+  * 006037:4239x0 PDI1394P24
+  * 006037:431000 PDI1394P21
+  * 006037:431100 PDI1394P22
+
+* 00c02d: `Fujifilm <http://www.fujifilm.com/>`_
+
+  * 00c02d:303562 MD8405B
+  * 00c02d:303565 MD8405E
+
+* 080028: `Texas Instruments <http://www.ti.com/>`_
+
+  * 080028:42308a `TSB41LV02A <http://www.ti.com/product/tsb41lv02a>`_
+  * 080028:424296 `TSB41AB1 <http://www.ti.com/product/tsb41ab1>`_
+  * 080028:424296 `TSB41AB2 <http://www.ti.com/product/tsb41ab2>`_
+  * 080028:424499 `TSB43AB22 “iOHCI-Lynx” <http://www.ti.com/product/tsb43ab22>`_
+  * 080028:424499 `TSB43AB22A “iOHCI-Lynx” <http://www.ti.com/product/tsb43ab22a>`_
+  * 080028:424729 `XIO2200A <http://www.ti.com/product/xio2200a>`_
+  * 080028:434195 `TSB41AB3 <http://www.ti.com/product/tsb41ab3>`_
+  * 080028:434502 `TSB43AB23 <http://www.ti.com/product/tsb43ab23>`_
+  * 080028:434615 `TSB43CB43A “iceLynx Micro” <http://www.ti.com/product/tsb43cb43a>`_
+  * 080028:46318a `TSB41LV06A <http://www.ti.com/product/tsb41lv06a>`_
+  * 080028:831304 `TSB81BA3 <http://www.ti.com/product/tsb81ba3>`_
+  * 080028:831304 TSB81BA3A
+  * 080028:831306 `TSB81BA3D <http://www.ti.com/product/tsb81ba3d>`_
+  * 080028:831307 `TSB81BA3E <http://www.ti.com/product/tsb81ba3e>`_
+  * 080028:831307 `XIO2213A “Cheetah Express” <http://www.ti.com/product/xio2213a>`_
+  * 080028:831307 `XIO2213B “Cheetah Express” <http://www.ti.com/product/xio2213b>`_
+  * 080028:833003 `TSB41BA3B <http://www.ti.com/product/tsb41ba3b>`_
+  * 080028:833005 `TSB41BA3D <http://www.ti.com/product/tsb41ba3d>`_
+
+* 10005a: `IBM <http://www.ibm.com/>`_
+
+  * 10005a:21860x IBM21S860
+  * 10005a:21861x IBM21S861
+  * 10005a:21862x IBM21S862
+
+Original document
+=================
+
+This page is copied from `<https://github.com/cladisch/linux-firewire-utils/wiki/PhyIDs>`_ in the
+original repository for ``linux-firewire-utils``.