Re: [PATCH RFT 2/3] arm64: dts: qcom: glymur: Add USB related nodes
From: Konrad Dybcio
Date: Tue Jan 27 2026 - 06:49:01 EST
On 1/27/26 12:41 PM, Abel Vesa wrote:
> On 26-01-13 14:13:32, Konrad Dybcio wrote:
>> On 1/13/26 1:33 PM, Abel Vesa wrote:
>>> From: Wesley Cheng <wesley.cheng@xxxxxxxxxxxxxxxx>
>>>
>>> The Glymur USB system contains 3 USB type C ports, 1 USB multiport
>>> controller and a USB 2.0 only controller. This encompasses 5 SS USB QMP
>>> PHYs (3 combo and 2 uni) and 6 M31 eUSB2 PHYs. All controllers are SNPS
>>> DWC3 based, so describe them as flattened DWC3 QCOM nodes.
>>>
>>> Signed-off-by: Wesley Cheng <wesley.cheng@xxxxxxxxxxxxxxxx>
>>> Co-developed-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
>>> Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxxxxxxxx>
>>> ---
>>
>> [...]
>>
>>> + snps,dis_u2_susphy_quirk;
>>> + snps,dis_enblslpm_quirk;
>>> + snps,dis_u3_susphy_quirk;
>>> + snps,usb2-lpm-disable;
>>
>> Other SoCs have a list that's much longer, please consult Wesley if
>> this list is enough
>
> Checked with Wesley. He confirmed that this trimmed list is fine.
> He said he dropped the rest since they are related to the power saving
> features like USB2/3 LPM (l1 or u1/u2) and we don't seem need those.
Is that to say that those erratas were fixed in this hardware?
Low-power states of the link are no less than desired is possible..
Konrad