From: Shawn Guo <shengchao.guo@oss.qualcomm.com>
To: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Cc: "Vinod Koul" <vkoul@kernel.org>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kwilczynski@kernel.org>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Bjorn Andersson" <andersson@kernel.org>,
"Maxime Chevallier" <maxime.chevallier@bootlin.com>,
"Philipp Zabel" <p.zabel@pengutronix.de>,
linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-pci@vger.kernel.org
Subject: Re: [PATCH v3 1/5] dt-bindings: phy: qcom: add Nord QMP PCIe PHY binding
Date: Thu, 10 Sep 2026 14:43:45 +0800 [thread overview]
Message-ID: <aqJRob8DsjOeEiPJ@QCOM-aGQu4IUr3Y> (raw)
In-Reply-To: <20260909-nord-v3-1-b0a82721c547@oss.qualcomm.com>
On Wed, Sep 09, 2026 at 05:18:16PM +0530, Krishna Chaitanya Chundru wrote:
> Document the PCIe PHY found on the Qualcomm Nord platform.
>
> Nord has a Gen5-capable QMP PCIe PHY that can operate in multiple
> lane configurations using four PHY segments (A/B/C/D). The active
> topology is selected by firmware through a TCSR configuration
> register and may be configured as x16, x8+x8, x8+x4+x4, or
> x8+x4+x2+x2.
>
> The binding describes the register regions, clocks, resets, power
> domains, regulators, PHY provider interface, clock provider interface,
> and the qcom,link-mode property used by the driver to discover the
> active lane configuration programmed by firmware.
>
> Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
> ---
> .../phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml | 272 +++++++++++++++++++++
> 1 file changed, 272 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml
> new file mode 100644
> index 000000000000..624ad7e7d13e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml
> @@ -0,0 +1,272 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/phy/qcom,nord-qmp-gen5x16-pcie-phy.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Nord QMP Quadfurcated PCIe multiple link-mode PHY
> +
> +maintainers:
> + - Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
> +
> +description: |
Can we drop "|" like below?
@@ -9,7 +9,7 @@ title: Qualcomm Nord QMP Quadfurcated PCIe multiple link-mode PHY
maintainers:
- Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
-description: |
+description:
The Qualcomm Nord PCIe PHY is a Gen5-capable QMP PCIe PHY composed
of four PHY ports (A/B/C/D). The ports can be combined to support
multiple lane topologies, including x16, x8+x8, x8+x4+x4 and
@@ -101,7 +101,7 @@ properties:
vdda-pll-d-supply: true
qcom,link-mode:
- description: |
+ description:
Reference to the TCSR syscon and the offset of the
TCSR_PCIE_LINK_CONFIG_MODE register.
0 (QMP_PCIE_NORD_MODE_X16) — all ports ganged as x16
@@ -129,8 +129,8 @@ properties:
"#phy-cells":
const: 1
- description: |
- Selects the PHY instance by index:
+ description:
+ Selects the PHY instance by index.
0 — port A (up to Gen5 x8; anchor in x16 mode)
1 — port B (up to Gen5 x4)
2 — port C (up to Gen5 x2)
Shawn
next prev parent reply other threads:[~2026-09-10 6:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-09 11:48 [PATCH v3 0/5] Add PCIe support for Qualcomm Nord platform Krishna Chaitanya Chundru
2026-09-09 11:48 ` [PATCH v3 1/5] dt-bindings: phy: qcom: add Nord QMP PCIe PHY binding Krishna Chaitanya Chundru
2026-09-10 6:43 ` Shawn Guo [this message]
2026-09-10 7:14 ` Manivannan Sadhasivam
2026-09-10 10:03 ` Krzysztof Kozlowski
2026-09-15 5:23 ` Krishna Chaitanya Chundru
2026-09-09 11:48 ` [PATCH v3 2/5] dt-bindings: pci: qcom: add Nord PCIe controller compatible Krishna Chaitanya Chundru
2026-09-10 6:46 ` Shawn Guo
2026-09-09 11:48 ` [PATCH v3 3/5] PCI: qcom: Add CGC disable workaround for Nord PCIe Krishna Chaitanya Chundru
2026-09-10 6:47 ` Shawn Guo
2026-09-10 7:20 ` Manivannan Sadhasivam
2026-09-10 7:29 ` Konrad Dybcio
2026-09-10 7:36 ` Manivannan Sadhasivam
2026-09-09 11:48 ` [PATCH v3 4/5] phy: qcom: qmp: Move qphy_setbits/clrbits/checkbits to common header Krishna Chaitanya Chundru
2026-09-10 6:48 ` Shawn Guo
2026-09-10 7:24 ` Manivannan Sadhasivam
2026-09-09 11:48 ` [PATCH v3 5/5] phy: qcom: qmp-pcie: Add Nord Gen5x16 PCIe multi-PHY support Krishna Chaitanya Chundru
2026-09-10 5:52 ` Shawn Guo
2026-09-16 13:26 ` Krishna Chaitanya Chundru
2026-09-10 7:35 ` Manivannan Sadhasivam
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