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As reported by Kojima-san, the PHY reference clock value we use in our
ACPI and DT descriptions is out of sync with the hardware. Replace
125 MHz with 250 MHz throughout.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
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On the SynQuacer Evalution Board, PCIe RC #0 is not clocked if no card
is inserted into the PCIe slot, and so any attempt to access the device
registers will lock up the system.
So let's check the presence detect pin directly in the _STA implementation
of PCI0. This needs to be done before the config space check, because that
access itself will lock the system if no card is inserted.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
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We have a couple of workarounds available for the ECAM ghosting issue
that affects the Synopsys Designware PCIe RCs. First of all, we can be
optimistic and hope that the silicon gets fixed at some point. Then,
there is a SCP firmware hack that hides these ghosts by remapping the
ECAM region using the SMMU sitting between the CPU and the PCIe RC
slave interface. Finally, we have a workaround involving stage 2
translation tables that may be enabled at will using a DIP switch on
the board.
Instead of adding elaborate logic to infer which of these situations we
may find ourselves in, let's just test for the symptom directly in the
_STA method implementation of the PNP0A08 devices, and deactivate the
device if the ECAM space does not appear sane.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
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Add the ACPI tables describing various parts of the SynQuacer SoC and
its peripherals, and the drivers to expose them to the EvalBoard and
DeveloperBox platforms.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org>
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