Linux ARM-MSM sub-architecture
 help / color / mirror / Atom feed
From: Mrinmay Sarkar <mrinmay.sarkar@oss.qualcomm.com>
To: Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konradybcio@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-phy@lists.infradead.org, devicetree@vger.kernel.org,
	krishna.chundru@oss.qualcomm.com, quic_vbadigan@quicinc.com,
	quic_nayiluri@quicinc.com, quic_ramkri@quicinc.com,
	quic_nitegupt@quicinc.com,
	Mrinmay Sarkar <mrinmay.sarkar@oss.qualcomm.com>
Subject: [PATCH 2/2] arm64: dts: qcom: sa8775p: Set max link speed to Gen4 for PCIe EP
Date: Wed, 23 Apr 2025 16:45:44 +0530	[thread overview]
Message-ID: <20250423-update_phy-v1-2-30eb51703bb8@oss.qualcomm.com> (raw)
In-Reply-To: <20250423-update_phy-v1-0-30eb51703bb8@oss.qualcomm.com>

The maximum link speed was previously restricted to Gen3 due to
the absence of Gen4 equalization support in the driver.

Add this change to set the maximum link speed to Gen4, as Gen4
equalization support has now been added into the driver.

Signed-off-by: Mrinmay Sarkar <mrinmay.sarkar@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 5bd0c03476b143444543c68cd1c1d475c3302555..65d9433a298f80eb782439120ad9c3c74025b441 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -6462,7 +6462,7 @@ pcie0_ep: pcie-ep@1c00000 {
 		power-domains = <&gcc PCIE_0_GDSC>;
 		phys = <&pcie0_phy>;
 		phy-names = "pciephy";
-		max-link-speed = <3>; /* FIXME: Limiting the Gen speed due to stability issues */
+		max-link-speed = <4>;
 		num-lanes = <2>;
 		linux,pci-domain = <0>;
 
@@ -6620,7 +6620,7 @@ pcie1_ep: pcie-ep@1c10000 {
 		power-domains = <&gcc PCIE_1_GDSC>;
 		phys = <&pcie1_phy>;
 		phy-names = "pciephy";
-		max-link-speed = <3>; /* FIXME: Limiting the Gen speed due to stability issues */
+		max-link-speed = <4>;
 		num-lanes = <4>;
 		linux,pci-domain = <1>;
 

-- 
2.25.1


  parent reply	other threads:[~2025-04-23 11:16 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-23 11:15 [PATCH 0/2] Update PCIe PHY settings for SA8775P Mrinmay Sarkar
2025-04-23 11:15 ` [PATCH 1/2] phy: qcom: qmp-pcie: Update " Mrinmay Sarkar
2025-04-23 11:25   ` Konrad Dybcio
2025-04-23 13:37   ` Dmitry Baryshkov
     [not found]     ` <CAMyL0qMQCGE-JNwTjqJk8TrGLBDr_1W7Sv_nECkW9Xp1fXgeuw@mail.gmail.com>
2025-05-02 13:41       ` Konrad Dybcio
2025-04-23 11:15 ` Mrinmay Sarkar [this message]
2025-04-23 11:23   ` [PATCH 2/2] arm64: dts: qcom: sa8775p: Set max link speed to Gen4 for PCIe EP Konrad Dybcio

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20250423-update_phy-v1-2-30eb51703bb8@oss.qualcomm.com \
    --to=mrinmay.sarkar@oss.qualcomm.com \
    --cc=andersson@kernel.org \
    --cc=conor+dt@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=kishon@kernel.org \
    --cc=konradybcio@kernel.org \
    --cc=krishna.chundru@oss.qualcomm.com \
    --cc=krzk+dt@kernel.org \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-phy@lists.infradead.org \
    --cc=quic_nayiluri@quicinc.com \
    --cc=quic_nitegupt@quicinc.com \
    --cc=quic_ramkri@quicinc.com \
    --cc=quic_vbadigan@quicinc.com \
    --cc=robh@kernel.org \
    --cc=vkoul@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox