linux-kernel - Re: [PATCH v8 4/5] PCI: qcom: Disable ASPM L0s for X1E80100

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Message-ID: <ZyjaPtGtRlsIO64b@hovoldconsulting.com>
Date: Mon, 4 Nov 2024 15:29:18 +0100
From: Johan Hovold <johan@...nel.org>
To: Qiang Yu <quic_qianyu@...cinc.com>
Cc: manivannan.sadhasivam@...aro.org, vkoul@...nel.org, kishon@...nel.org,
	robh@...nel.org, andersson@...nel.org, konradybcio@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, mturquette@...libre.com,
	sboyd@...nel.org, abel.vesa@...aro.org, quic_msarkar@...cinc.com,
	quic_devipriy@...cinc.com, dmitry.baryshkov@...aro.org,
	kw@...ux.com, lpieralisi@...nel.org, neil.armstrong@...aro.org,
	linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
	johan+linaro@...nel.org
Subject: Re: [PATCH v8 4/5] PCI: qcom: Disable ASPM L0s for X1E80100

On Thu, Oct 31, 2024 at 08:09:01PM -0700, Qiang Yu wrote:
> Currently, the cfg_1_9_0 which is being used for X1E80100 doesn't disable
> ASPM L0s. However, hardware team recommends to disable L0s as the PHY init
> sequence is not tuned support L0s. Hence reuse cfg_sc8280xp for X1E80100.
> 
> Note that the config_sid() callback is not present in cfg_sc8280xp, don't
> concern about this because config_sid() callback is originally a no-op
> for X1E80100.
> 
> Signed-off-by: Qiang Yu <quic_qianyu@...cinc.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

This one should also have been marked for backporting:

Fixes: 6d0c39324c5f ("PCI: qcom: Add X1E80100 PCIe support")
Cc: stable@...r.kernel.org	# 6.9

Looks much better now either way:

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