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From: Niklas Cassel <cassel@kernel.org>
To: "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
	"Rob Herring" <robh@kernel.org>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Heiko Stuebner" <heiko@sntech.de>,
	"Niklas Cassel" <cassel@kernel.org>,
	"Krishna chaitanya chundru" <quic_krichai@quicinc.com>
Cc: "Wilfred Mallawa" <wilfred.mallawa@wdc.com>,
	"Damien Le Moal" <dlemoal@kernel.org>,
	"Hans Zhang" <18255117159@163.com>,
	"Laszlo Fiat" <laszlo.fiat@proton.me>,
	"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
	linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org,
	linux-arm-msm@vger.kernel.org
Subject: [PATCH 0/4] PCI: dwc: Link Up IRQ fixes
Date: Mon,  5 May 2025 11:26:04 +0200	[thread overview]
Message-ID: <20250505092603.286623-6-cassel@kernel.org> (raw)

Hello there,

Commit 8d3bf19f1b58 ("PCI: dwc: Don't wait for link up if driver can detect
Link Up event") added support for DWC to not wait for link up before
enumerating the bus. However, we cannot simply enumerate the bus after
receiving a Link Up IRQ, we still need to wait PCIE_T_RRS_READY_MS time
to allow a device to become ready after deasserting PERST. To avoid
bringing back an conditional delay during probe, perform the wait in the
threaded IRQ handler instead.

Please review.


Kind regards,
Niklas


Niklas Cassel (4):
  PCI: dw-rockchip: Do not enumerate bus before endpoint devices are
    ready
  PCI: qcom: Do not enumerate bus before endpoint devices are ready
  PCI: dw-rockchip: Replace PERST sleep time with proper macro
  PCI: qcom: Replace PERST sleep time with proper macro

 drivers/pci/controller/dwc/pcie-dw-rockchip.c | 3 ++-
 drivers/pci/controller/dwc/pcie-qcom.c        | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

-- 
2.49.0



             reply	other threads:[~2025-05-05  9:28 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-05  9:26 Niklas Cassel [this message]
2025-05-05  9:26 ` [PATCH 1/4] PCI: dw-rockchip: Do not enumerate bus before endpoint devices are ready Niklas Cassel
2025-05-05 14:09   ` Niklas Cassel
2025-05-05  9:26 ` [PATCH 3/4] PCI: dw-rockchip: Replace PERST sleep time with proper macro Niklas Cassel

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