linux-kernel - Re: [PATCH 0/5] arm64: dts: qcom: fix USB wakeup interrupts again

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Date:   Wed, 13 Dec 2023 19:49:50 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Johan Hovold <johan+linaro@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     Andy Gross <agross@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] arm64: dts: qcom: fix USB wakeup interrupts again



On 12/13/23 18:33, Johan Hovold wrote:
> The USB DP/DM HS PHY interrupts need to be provided by the PDC interrupt
> controller in order to be able to wake the system up from low-power
> states and to be able to detect disconnect events, which requires
> triggering on falling edges.
> 
> A recent commit updated the trigger type but failed to change the
> interrupt provider as required. This leads to the current Linux driver
> failing to probe instead of printing an error during suspend and USB
> wakeup not working as intended.
> 
> While at it, fix also the SS PHY interrupt so that it too can be used to
> wakeup the system up.
> 
> Thanks to Konrad for reporting the probe failure on sc8180x and
> providing the corresponding PDC interrupts and to Krishna for providing
> the remaining PDC interrupts. The exception is for the second controller
> on sm8150 whose PDC vectors I inferred from sdm845.
> 
> Note sdm670 and sm6375 need similar fixes and I believe Bjorn is trying
> to dig out the corresponding vectors. The SS PHY interrupt on sc8180x
> should also be fixed.
sdm670:

pdc 9 DP
pdc 8 DM
pdc 6 usb3

Konrad