[PATCH 0/2] PCI: mediatek-gen3: Fix the control timing of PERST#

[Jian Yang]

Dear maintainers,

The purpose of this patch series is to fix the PERST# control timing
in the MediaTek PCIe Gen3 controller driver so that it complies with
the PCIe CEM specification.

In the current MediaTek PCIe Gen3 controller driver, there are two
issues with PERST# timing:
1. During the power-up phase (i.e., before PCIe link-up), on some
MediaTek SoCs PERST# is de-asserted before the REFCLK becomes stable;
2. During system shutdown, PERST# is not asserted before power is
removed.

Patch 1 fixes the reset signal sequencing during the power-up phase.

Patch 2 adds a shutdown callback to control PERST# during system
shutdown.

Best regards,
Jian Yang

Jian Yang (2):
  PCI: mediatek-gen3: Fix PERST# control sequence at system startup
    phase
  PCI: mediatek-gen3: Add shutdown callback to cotnrol PERST# signal

 drivers/pci/controller/pcie-mediatek-gen3.c | 30 ++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

-- 
2.45.2