linux-kernel - Re: [PATCH v6 0/4] PCI: qcom: Add 16.0 GT/s equalization and margining settings

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Message-ID: <ZtgutzysJ-3GeSDE@hovoldconsulting.com>
Date: Wed, 4 Sep 2024 11:56:07 +0200
From: Johan Hovold <johan@...nel.org>
To: manivannan.sadhasivam@...aro.org
Cc: Richard Zhu <hongxing.zhu@....com>,
	Lucas Stach <l.stach@...gutronix.de>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Chuanhua Lei <lchuanhua@...linear.com>,
	Marek Vasut <marek.vasut+renesas@...il.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	abel.vesa@...aro.org, johan+linaro@...nel.org,
	Shashank Babu Chinta Venkata <quic_schintav@...cinc.com>
Subject: Re: [PATCH v6 0/4] PCI: qcom: Add 16.0 GT/s equalization and
 margining settings

On Wed, Sep 04, 2024 at 12:41:56PM +0530, Manivannan Sadhasivam via B4 Relay wrote:

> This series adds 16.0 GT/s specific equalization and RX lane margining settings
> to the Qcom RC and EP drivers. This series is mandatory for the stable operation
> of the PCIe link at 16.0 GT/s on the Qcom platforms.

> Changes in v6:
> 
> - Dropped the code refactoring patch as suggested by Johan
> - Added 2 patches to fix the caching of maximum supported link speed value that
>   is needed to apply the equalization/margining settings
> - Updated the commit message of patch 3 as per Bjorn's suggestion

Thanks for the update. This series fixes the NVMe link errors on the
x1e80100 CRD:

Tested-by: Johan Hovold <johan+linaro@...nel.org>

Johan