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PCI: rcar-gen4: Drop documentation about obtaining platform firmware

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Renesas R-Car V4H (r8a779g0) has a PCIe controller, and it requires
specific firmware downloading. The firmware is now available via
linux-firmware.git repository. So the existing documentation about
obtaining the firmware becomes obsolete. Hence, drop it.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260921203716.73663-1-marek.vasut+renesas@mailbox.org
This commit is contained in:
Marek Vasut 2026-09-21 22:36:46 +02:00 committed by Bjorn Helgaas
parent 3283c4db60
commit 056fd7eb01
3 changed files with 0 additions and 34 deletions
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1
Documentation/PCI/controller/index.rst
View File

@ -8,4 +8,3 @@ PCI Native Host Bridge and Endpoint Drivers
:maxdepth: 2
pci-controller-drivers
rcar-pcie-firmware

32
Documentation/PCI/controller/rcar-pcie-firmware.rst
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@ -1,32 +0,0 @@
.. SPDX-License-Identifier: GPL-2.0
=================================================
Firmware of PCIe controller for Renesas R-Car V4H
=================================================
Renesas R-Car V4H (r8a779g0) has a PCIe controller, requiring a specific
firmware download during startup.
However, Renesas currently cannot distribute the firmware free of charge.
The firmware file "104_PCIe_fw_addr_data_ver1.05.txt" (note that the file name
might be different between different datasheet revisions) can be found in the
datasheet encoded as text, and as such, the file's content must be converted
back to binary form. This can be achieved using the following example script:
.. code-block:: sh
$ awk '/^\s*0x[0-9A-Fa-f]{4}\s+0x[0-9A-Fa-f]{4}/ { print substr($2,5,2) substr($2,3,2) }' \
104_PCIe_fw_addr_data_ver1.05.txt | \
xxd -p -r > rcar_gen4_pcie.bin
Once the text content has been converted into a binary firmware file, verify
its checksum as follows:
.. code-block:: sh
$ sha1sum rcar_gen4_pcie.bin
1d0bd4b189b4eb009f5d564b1f93a79112994945 rcar_gen4_pcie.bin
The resulting binary file called "rcar_gen4_pcie.bin" should be placed in the
"/lib/firmware" directory before the driver runs.

1
MAINTAINERS
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@ -20954,7 +20954,6 @@ M: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
L: linux-pci@vger.kernel.org
L: linux-renesas-soc@vger.kernel.org
S: Maintained
F: Documentation/PCI/controller/rcar-pcie-firmware.rst
F: Documentation/devicetree/bindings/pci/*rcar*
F: drivers/pci/controller/*rcar*
F: drivers/pci/controller/dwc/*rcar*