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Simple PCIe FMC carrier SPEC
Commit 97532bff authored by Federico Vaga's avatar Federico Vaga
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doc: update attribute description 

Signed-off-by: Federico Vaga's avatarFederico Vaga <federico.vaga@cern.ch>
parent 3b1aaab0
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doc/sw-driver.rst
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......@@ -180,10 +180,9 @@ attributes. Here we focus only on those.
At PCI device top-level we can see the `DMA Engine`_ interface and the
GN412x sub-devices for :ref:`GPIO<gn4124_gpio>` and :ref:`FCL<gn4124_fcl>`.
Still at the PCI device top-level there is the directory ``fpga-options``
that contains additional attributes to control the FPGA.
Still at the PCI device top-level there are also the following attributes.
``fpga-options/bootselect`` [R/W]
``bootselect`` [R/W]
It selects (returns) the FPGA access mode. Possible values are:
- fpga-flash: (default) the FPGA has access to the SPI flash, it uses it
......@@ -193,8 +192,12 @@ that contains additional attributes to control the FPGA.
- gn4124-flash: the SPI flash is accessible form the PCI bridge, it is used
to load an FPGA configuration on the SPI flash
``fpga-options/load_golden_fpga`` [W]
It loads the SPEC golden FPGA (if installed). Just write '1' to this file.
``firmware_name`` [W]
It configures the FPGA with a bitstream which name is provided as input.
Remember that firmwares are installed in ``/lib/firmware`` and alternatively
you can provide your own path by setting it in
``/sys/module/firmware_class/parameters/path``.
If the FPGA is correctly programmed (an FPGA configuration that uses the
:ref:`SPEC base<spec_hdl_spec_base>`) then there will be a directory named
......@@ -238,12 +241,6 @@ attributes. Here we focus only on those.
``<pci-id>/info`` [R]
Miscellaneous information about the card status: IRQ mapping.
``<pci-id>/fpga_firmware`` [W]
It configures the FPGA with a bitstream which name is provided as input.
Remember that firmwares are installed in ``/lib/firmware`` and alternatively
you can provide your own path by setting it in
``/sys/module/firmware_class/parameters/path``.
``<pci-id>/spec-<pci-id>/csr_regs`` [R]
It dumps the Control/Status register for
the :ref:`SPEC base<spec_hdl_spec_base>`
......
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