linux-kernel - [PATCH v2 4/4] arm64: dts: qcom: sa8775p: add link

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: <20250617021617.2793902-5-quic_ziyuzhan@quicinc.com>
Date: Tue, 17 Jun 2025 10:16:17 +0800
From: Ziyue Zhang <quic_ziyuzhan@...cinc.com>
To: andersson@...nel.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, jingoohan1@...il.com,
        mani@...nel.org, lpieralisi@...nel.org, kwilczynski@...nel.org,
        bhelgaas@...gle.com, johan+linaro@...nel.org, vkoul@...nel.org,
        kishon@...nel.org, neil.armstrong@...aro.org, abel.vesa@...aro.org,
        kw@...ux.com
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-phy@...ts.infradead.org, qiang.yu@....qualcomm.com,
        quic_krichai@...cinc.com, quic_vbadigan@...cinc.com,
        Ziyue Zhang <quic_ziyuzhan@...cinc.com>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v2 4/4] arm64: dts: qcom: sa8775p: add link_down reset for pcie

SA8775p supports 'link_down' reset on hardware, so add it for both pcie0
and pcie1, which can provide a better user experience.

Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Signed-off-by: Ziyue Zhang <quic_ziyuzhan@...cinc.com>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index d7248014368b..c8ce3d42c894 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -7152,8 +7152,11 @@ pcie0: pcie@...0000 {
 		iommu-map = <0x0 &pcie_smmu 0x0000 0x1>,
 			    <0x100 &pcie_smmu 0x0001 0x1>;
 
-		resets = <&gcc GCC_PCIE_0_BCR>;
-		reset-names = "pci";
+		resets = <&gcc GCC_PCIE_0_BCR>,
+			 <&gcc GCC_PCIE_0_LINK_DOWN_BCR>;
+		reset-names = "pci",
+			      "link_down";
+
 		power-domains = <&gcc PCIE_0_GDSC>;
 
 		phys = <&pcie0_phy>;
@@ -7312,8 +7315,11 @@ pcie1: pcie@...0000 {
 		iommu-map = <0x0 &pcie_smmu 0x0080 0x1>,
 			    <0x100 &pcie_smmu 0x0081 0x1>;
 
-		resets = <&gcc GCC_PCIE_1_BCR>;
-		reset-names = "pci";
+		resets = <&gcc GCC_PCIE_1_BCR>,
+			 <&gcc GCC_PCIE_1_LINK_DOWN_BCR>;
+		reset-names = "pci",
+			      "link_down";
+
 		power-domains = <&gcc PCIE_1_GDSC>;
 
 		phys = <&pcie1_phy>;
-- 
2.34.1