linux-kernel - Re: [PATCH v13 08/10] arm64: dts: qcom: sc8280xp: Add multiport controller node for SC8280

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Message-ID: <ZTduh5LULBMYf3wq@hovoldconsulting.com>
Date:   Tue, 24 Oct 2023 09:13:11 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Krishna Kurapati PSSNV <quic_kriskura@...cinc.com>
Cc:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Felipe Balbi <balbi@...nel.org>,
        Wesley Cheng <quic_wcheng@...cinc.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        quic_pkondeti@...cinc.com, quic_ppratap@...cinc.com,
        quic_jackp@...cinc.com, ahalaney@...hat.com,
        quic_shazhuss@...cinc.com
Subject: Re: [PATCH v13 08/10] arm64: dts: qcom: sc8280xp: Add multiport
 controller node for SC8280

On Mon, Oct 23, 2023 at 11:04:38PM +0530, Krishna Kurapati PSSNV wrote:
> On 10/23/2023 9:39 PM, Johan Hovold wrote:
> > On Sat, Oct 07, 2023 at 09:18:04PM +0530, Krishna Kurapati wrote:

> > The interrupt order does not match the binding, where the power event
> > interrupts come first.
> > 
> > And we probably also want the hs_phy_irqs here after fixing the
> > incomplete binding.
> 
> You want to update the driver code for this as well ? I have no problem 
> in adding it in DT and binding but not in driver.

Possibly both.
 
> >> +			usb_2_dwc3: usb@...0000 {
> >> +				compatible = "snps,dwc3";
> >> +				reg = <0 0x0a400000 0 0xcd00>;
> >> +				interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
> > 
> > I'd also like to know what that second dwc3 interrupt is for and whether
> > it should be defined here as well.
> 
> Second interrupts is for HW acceleration I believe for which support is 
> not there currently.

But the interrupt is there. And devicetree describes the hardware, not
the implementation, as I've pointed out before.

Johan