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From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>,
	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
Subject: Re: [PATCH 1/8] arm64: dts: qcom: kodiak: Add t-power-on-us property for PCIe root ports
Date: Fri, 16 Oct 2026 12:32:12 +0200	[thread overview]
Message-ID: <21aac057-68fe-4a63-a1e1-15770830d7dc@oss.qualcomm.com> (raw)
In-Reply-To: <20260911-t_pwr_on-v1-1-c9eee197d082@oss.qualcomm.com>

On 9/11/26 8:50 AM, Krishna Chaitanya Chundru wrote:
> 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 ports 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/kodiak.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
> index f2da3706d5c8..54acc7d9bdea 100644
> --- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
> +++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
> @@ -2306,6 +2306,8 @@ pcie0_port: pcie@0 {
>  				#address-cells = <3>;
>  				#size-cells = <2>;
>  				ranges;
> +
> +				t-power-on-us = <80>;

nit: please put it there in all patches:

@@ -2316,6 +2316,8 @@ pcie0_port: pcie@0 {
 
                                phys = <&pcie0_phy>;
 
+                               t-power-on-us = <80>;
+
                                #address-cells = <3>;
                                #size-cells = <2>;
                                ranges;

and re-run the list of SoCs that need it (LLM should do at least
the first part for you in ~20 seconds)

Konrad

  reply	other threads:[~2026-10-16 10:32 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-11  6:50 [PATCH 0/8] arm64: dts: qcom: " Krishna Chaitanya Chundru
2026-09-11  6:50 ` [PATCH 1/8] arm64: dts: qcom: kodiak: " Krishna Chaitanya Chundru
2026-10-16 10:32   ` Konrad Dybcio [this message]
2026-09-11  6:50 ` [PATCH 2/8] arm64: dts: qcom: lemans: " Krishna Chaitanya Chundru
2026-09-11  6:50 ` [PATCH 3/8] arm64: dts: qcom: monaco: " Krishna Chaitanya Chundru
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 ` [PATCH 6/8] arm64: dts: qcom: talos: Add t-power-on-us property for PCIe root port Krishna Chaitanya Chundru
2026-09-11  6:50 ` [PATCH 7/8] arm64: dts: qcom: sm8750: " Krishna Chaitanya Chundru
2026-09-11  6:50 ` [PATCH 8/8] arm64: dts: qcom: kaanapali: " Krishna Chaitanya Chundru
2026-09-21  8:39 ` [PATCH 0/8] arm64: dts: qcom: Add t-power-on-us property for PCIe root ports Konrad Dybcio
2026-09-21 11:10   ` Krishna Chaitanya Chundru
2026-09-21 11:34     ` Manivannan Sadhasivam
2026-09-21 11:44       ` Konrad Dybcio
2026-09-21 11:54         ` Manivannan Sadhasivam
  -- strict thread matches above, loose matches on Subject: below --
2026-09-11  6:48 [PATCH 0/8] Subject: " Krishna Chaitanya Chundru
2026-09-11  6:48 ` [PATCH 1/8] arm64: dts: qcom: kodiak: " Krishna Chaitanya Chundru

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