Devicetree
 help / color / mirror / Atom feed
* [PATCH 0/4] Add PCIe support for Qualcomm Nord platform
@ 2026-08-25  3:40 Krishna Chaitanya Chundru
  2026-08-25  3:40 ` [PATCH 1/4] dt-bindings: phy: qcom: add Nord QMP PCIe PHY binding Krishna Chaitanya Chundru
                   ` (3 more replies)
  0 siblings, 4 replies; 6+ messages in thread
From: Krishna Chaitanya Chundru @ 2026-08-25  3:40 UTC (permalink / raw)
  To: Vinod Koul, Neil Armstrong, Rob Herring, Krzysztof Kozlowski,
	Conor Dooley, Lorenzo Pieralisi, Krzysztof Wilczyński,
	Manivannan Sadhasivam, Bjorn Helgaas, Bjorn Andersson,
	Maxime Chevallier, Philipp Zabel
  Cc: Krishna Chaitanya Chundru, linux-arm-msm, linux-phy, devicetree,
	linux-kernel, linux-pci

This series adds PCIe support for the Qualcomm Nord (SA8797P) platform.

Nord has a single Gen5-capable QMP PCIe PHY block split into four
independently-clocked and independently-resettable ports (A/B/C/D).
Firmware selects the active lane topology at boot via a TCSR
configuration register, and the same PHY block can appear as a single
x16 port, x8+x8, x8+x4+x4, or x8+x4+x2+x2 depending on that mode. This
is similar in spirit to the Glymur multi-PHY support already posted,
except Nord's PHY registers are programmed by Linux rather than by
firmware, so this series adds the PLL, TXRXZ, PCS and PCS-lane init
tables along with the power-up/power-down/soft-reset sequencing needed
to bring each port up.

The series also documents and wires up the qcom,nord-pcie compatible
(reusing the existing SA8775P PCIe controller binding), and adds a
CORE_CLK_CGC_DIS/AUX_PWR_DET workaround required to avoid a timing
convergence issue in the PCIe power domain.

Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
---
To: Vinod Koul <vkoul@kernel.org>
To: Neil Armstrong <neil.armstrong@linaro.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
To: Lorenzo Pieralisi <lpieralisi@kernel.org>
To: Krzysztof Wilczyński <kwilczynski@kernel.org>
To: Manivannan Sadhasivam <mani@kernel.org>
To: Bjorn Helgaas <bhelgaas@google.com>
To: Bjorn Andersson <andersson@kernel.org>
To: Maxime Chevallier <maxime.chevallier@bootlin.com>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-phy@lists.infradead.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-pci@vger.kernel.org

---
Krishna Chaitanya Chundru (4):
      dt-bindings: phy: qcom: add Nord QMP PCIe PHY binding
      dt-bindings: pci: qcom: add Nord PCIe controller compatible
      PCI: qcom: Add CGC disable workaround for Nord PCIe
      phy: qcom: qmp-pcie: Add Nord Gen5x16 PCIe multi-PHY support

 .../devicetree/bindings/pci/qcom,pcie-sa8775p.yaml |    1 +
 .../bindings/phy/qcom,nord-qmp-pcie-phy.yaml       |  276 +++++
 drivers/pci/controller/dwc/pcie-qcom.c             |   16 +
 drivers/phy/qualcomm/phy-qcom-qmp-pcie-multiphy.c  | 1077 +++++++++++++++++++-
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-pcie-v6_40.h |   56 +
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-v6_40.h      |   14 +
 .../qualcomm/phy-qcom-qmp-qserdes-com-pcie-v6_40.h |   94 ++
 .../phy-qcom-qmp-qserdes-txrxz-pcie-v6_40.h        |  194 ++++
 8 files changed, 1688 insertions(+), 40 deletions(-)
---
base-commit: c76bb6ed13d3c7dcd1ab3b248299c5a6f1460ec4
change-id: 20260810-nord-461809f1d5ae

Best regards,
--  
Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2026-08-25  9:04 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-08-25  3:40 [PATCH 0/4] Add PCIe support for Qualcomm Nord platform Krishna Chaitanya Chundru
2026-08-25  3:40 ` [PATCH 1/4] dt-bindings: phy: qcom: add Nord QMP PCIe PHY binding Krishna Chaitanya Chundru
2026-08-25  9:04   ` Krzysztof Kozlowski
2026-08-25  3:40 ` [PATCH 2/4] dt-bindings: pci: qcom: add Nord PCIe controller compatible Krishna Chaitanya Chundru
2026-08-25  3:40 ` [PATCH 3/4] PCI: qcom: Add CGC disable workaround for Nord PCIe Krishna Chaitanya Chundru
2026-08-25  3:40 ` [PATCH 4/4] phy: qcom: qmp-pcie: Add Nord Gen5x16 PCIe multi-PHY support Krishna Chaitanya Chundru

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox