From: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
To: 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-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, mani@kernel.org,
Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
Subject: [PATCH 6/8] arm64: dts: qcom: talos: Add t-power-on-us property for PCIe root port
Date: Fri, 11 Sep 2026 12:20:07 +0530 [thread overview]
Message-ID: <20260911-t_pwr_on-v1-6-c9eee197d082@oss.qualcomm.com> (raw)
In-Reply-To: <20260911-t_pwr_on-v1-0-c9eee197d082@oss.qualcomm.com>
Currently the PCIe controller is not programming the T_POWER_ON value,
which can result in improper L1.2 exit behavior. Add the
t-power-on-us property to the PCIe root port so that this value is
correctly programmed during host initialization.
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/talos.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/talos.dtsi b/arch/arm64/boot/dts/qcom/talos.dtsi
index eedfdce3c479..ceb1dfc5189d 100644
--- a/arch/arm64/boot/dts/qcom/talos.dtsi
+++ b/arch/arm64/boot/dts/qcom/talos.dtsi
@@ -1401,6 +1401,8 @@ pcie_port0: pcie@0 {
#size-cells = <2>;
ranges;
bus-range = <0x01 0xff>;
+
+ t-power-on-us = <80>;
};
};
--
2.34.1
next prev parent reply other threads:[~2026-09-11 6:50 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-11 6:50 [PATCH 0/8] arm64: dts: qcom: Add t-power-on-us property for PCIe root ports Krishna Chaitanya Chundru
2026-09-11 6:50 ` [PATCH 1/8] arm64: dts: qcom: kodiak: " Krishna Chaitanya Chundru
2026-09-11 6:50 ` [PATCH 2/8] arm64: dts: qcom: lemans: " Krishna Chaitanya Chundru
2026-09-11 7:03 ` sashiko-bot
2026-09-11 6:50 ` [PATCH 3/8] arm64: dts: qcom: monaco: " Krishna Chaitanya Chundru
2026-09-11 7:02 ` sashiko-bot
2026-09-11 6:50 ` [PATCH 4/8] arm64: dts: qcom: hamoa: " Krishna Chaitanya Chundru
2026-09-11 6:50 ` [PATCH 5/8] arm64: dts: qcom: glymur: " Krishna Chaitanya Chundru
2026-09-11 6:50 ` Krishna Chaitanya Chundru [this message]
2026-09-11 6:50 ` [PATCH 7/8] arm64: dts: qcom: sm8750: Add t-power-on-us property for PCIe root port Krishna Chaitanya Chundru
2026-09-11 6:58 ` sashiko-bot
2026-09-11 6:50 ` [PATCH 8/8] arm64: dts: qcom: kaanapali: " Krishna Chaitanya Chundru
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