linux-kernel - [PATCH v8 1/4] arm64: dts: qcom: x1e80100: Add PCIe lane equalization preset properties

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250316-preset_v6-v8-1-0703a78cb355@oss.qualcomm.com>
Date: Sun, 16 Mar 2025 09:39:01 +0530
From: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>, Jingoo Han <jingoohan1@...il.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        quic_mrana@...cinc.com, quic_vbadigan@...cinc.com,
        Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v8 1/4] arm64: dts: qcom: x1e80100: Add PCIe lane
 equalization preset properties

Add PCIe lane equalization preset properties for 8 GT/s and 16 GT/s data
rates used in lane equalization procedure.

Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
---
This patch depends on the this dt binding pull request which got recently
merged: https://github.com/devicetree-org/dt-schema/pull/146
---
---
 arch/arm64/boot/dts/qcom/x1e80100.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
index 4936fa5b98ff..9f14dd13d02e 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
@@ -3209,6 +3209,10 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 			phys = <&pcie3_phy>;
 			phy-names = "pciephy";
 
+			eq-presets-8gts = /bits/ 16 <0x5555 0x5555 0x5555 0x5555
+						     0x5555 0x5555 0x5555 0x5555>;
+			eq-presets-16gts = /bits/ 8 <0x55 0x55 0x55 0x55 0x55 0x55 0x55 0x55>;
+
 			operating-points-v2 = <&pcie3_opp_table>;
 
 			status = "disabled";
@@ -3411,6 +3415,9 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 			phys = <&pcie6a_phy>;
 			phy-names = "pciephy";
 
+			eq-presets-8gts = /bits/ 16 <0x5555 0x5555 0x5555 0x5555>;
+			eq-presets-16gts = /bits/ 8 <0x55 0x55 0x55 0x55>;
+
 			status = "disabled";
 		};
 
@@ -3538,6 +3545,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 			phys = <&pcie5_phy>;
 			phy-names = "pciephy";
 
+			eq-presets-8gts = /bits/ 16 <0x5555 0x5555>;
+
 			status = "disabled";
 		};
 
@@ -3662,6 +3671,8 @@ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>,
 			phys = <&pcie4_phy>;
 			phy-names = "pciephy";
 
+			eq-presets-8gts = /bits/ 16 <0x5555 0x5555>;
+
 			status = "disabled";
 
 			pcie4_port0: pcie@0 {

-- 
2.34.1