linux-kernel - Re: [PATCH v6 2/3] dt-bindings: pci-imx6: Add one more external reference clock

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Message-ID: <20250917221757.GA1878979@bhelgaas>
Date: Wed, 17 Sep 2025 17:17:57 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Richard Zhu <hongxing.zhu@....com>
Cc: frank.li@....com, l.stach@...gutronix.de, lpieralisi@...nel.org,
	kwilczynski@...nel.org, mani@...nel.org, robh@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, bhelgaas@...gle.com,
	shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
	festevam@...il.com, linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 2/3] dt-bindings: pci-imx6: Add one more external
 reference clock

Update subject line similar to patch 1/3?

Also, I notice most binding commits include "PCI:", e.g.,

  dt-bindings: PCI: brcm,stb-pcie: ...
  dt-bindings: PCI: qcom: ...
  dt-bindings: PCI: altera ...

On Wed, Sep 17, 2025 at 12:52:37PM +0800, Richard Zhu wrote:
> i.MX95 PCIes have two reference clock inputs: one from internal PLL,
> the other from off chip crystal oscillator. Use extref clock name to be
> onhalf of the reference clock comes from external crystal oscillator.

Not sure what "onhalf" means.  Maybe it means something like this?

  The "extref" clock refers to a reference clock from an external
  crystal oscillator.

Same issue in patch 3/3.

> Add one more external reference clock for i.MX95 PCIes.