linux-kernel - Re: [PATCH v6 2/2] arm64: dts: qcom: ipq5424: Enable PCIe PHYs and controllers

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Message-ID: <1445a751-b629-4647-ad69-a1efbb471c21@quicinc.com>
Date: Wed, 9 Apr 2025 11:34:42 +0530
From: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
CC: <andersson@...nel.org>, <konradybcio@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_varada@...cinc.com>,
        <quic_srichara@...cinc.com>
Subject: Re: [PATCH v6 2/2] arm64: dts: qcom: ipq5424: Enable PCIe PHYs and
 controllers



On 4/8/2025 7:00 PM, Dmitry Baryshkov wrote:
> On 08/04/2025 15:49, Manikanta Mylavarapu wrote:
>>
>>
>> On 4/3/2025 3:02 PM, Dmitry Baryshkov wrote:
>>> On Thu, 3 Apr 2025 at 08:08, Manikanta Mylavarapu
>>> <quic_mmanikan@...cinc.com> wrote:
>>>>
>>>>
>>>>
>>>> On 4/2/2025 7:50 PM, Dmitry Baryshkov wrote:
>>>>> On Wed, Apr 02, 2025 at 03:57:23PM +0530, Manikanta Mylavarapu wrote:
>>>>>> Enable the PCIe controller and PHY nodes corresponding to RDP466.
>>>>>>
>>>>>> Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
>>>>>> ---
>>>>>> Changes in V6:
>>>>>>       - No change.
>>>>>>
>>>>>>   arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts | 41 ++++++++++++++++++++-
>>>>>>   1 file changed, 40 insertions(+), 1 deletion(-)
>>>>>>
>>>>>> diff --git a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
>>>>>> index 0fd0ebe0251d..1f89530cb035 100644
>>>>>> --- a/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
>>>>>> +++ b/arch/arm64/boot/dts/qcom/ipq5424-rdp466.dts
>>>>>> @@ -82,6 +82,32 @@ &dwc_1 {
>>>>>>       dr_mode = "host";
>>>>>>   };
>>>>>>
>>>>>> +&pcie2 {
>>>>>> +    pinctrl-0 = <&pcie2_default_state>;
>>>>>> +    pinctrl-names = "default";
>>>>>> +
>>>>>> +    perst-gpios = <&tlmm 31 GPIO_ACTIVE_LOW>;
>>>>>
>>>>>
>>>>> No wake-gpios? Please document it in the commit message.
>>>>>
>>>>
>>>> Hi Dmitry,
>>>>
>>>> Thank you for reviewing the patch.
>>>>
>>>> The wake GPIO is dropped because the PCIe on the IPQ5424 doesn't support low power mode.
>>>> I will document this information in the commit message and post the next version.
>>>
>>> If the GPIO is routed on the PCB I think it should still be described in the DT.
>>>
>>>
>>
>> Hi Dmitry,
>>
>>     I have confirmed with the hardware team that the wake GPIO is not routed on the PCB.
> 
> Sad. Please mention it in the commit message.
> 

Okay, sure.

Thanks & Regards,
Manikanta.