Re: [PATCH 1/2] arm64: dts: qcom: Use consistent naming for dwc3 usb nodes for sm8150

From: Bhupesh Sharma
Date: Sat Jun 26 2021 - 14:26:21 EST


Hi Bjorn,

On Sat, 26 Jun 2021 at 04:05, Bjorn Andersson
<bjorn.andersson@xxxxxxxxxx> wrote:
>
> On Fri 25 Jun 17:03 CDT 2021, Bhupesh Sharma wrote:
>
> > The dwc3 usb nodes in sm8150.dtsi are currently named differently,
> > leading to some confusion when one sees the entries in sysfs or
> > dmesg:
> > [ 1.943482] dwc3 a600000.usb: Adding to iommu group 1
> > [ 2.266127] dwc3 a800000.dwc3: Adding to iommu group 2
> >
> > Name both the nodes as dwc3@<addr> for consistency.
> >
> > While at it also arrange the two usb controller, hs-phy and
> > ss-phy nodes closer in the dts for better readability.
> >
> > Cc: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> > Signed-off-by: Bhupesh Sharma <bhupesh.sharma@xxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/qcom/sm8150.dtsi | 30 ++++++++++++++--------------
> > 1 file changed, 15 insertions(+), 15 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
> > index 612dda0fef43..3be6d093a99b 100644
> > --- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
> > @@ -2205,6 +2205,20 @@ glink-edge {
> > };
> > };
> >
> > + dc_noc: interconnect@9160000 {
> > + compatible = "qcom,sm8150-dc-noc";
> > + reg = <0 0x09160000 0 0x3200>;
> > + #interconnect-cells = <1>;
> > + qcom,bcm-voters = <&apps_bcm_voter>;
> > + };
> > +
> > + gem_noc: interconnect@9680000 {
> > + compatible = "qcom,sm8150-gem-noc";
> > + reg = <0 0x09680000 0 0x3e200>;
> > + #interconnect-cells = <1>;
> > + qcom,bcm-voters = <&apps_bcm_voter>;
> > + };
> > +
> > usb_1_hsphy: phy@88e2000 {
> > compatible = "qcom,sm8150-usb-hs-phy",
> > "qcom,usb-snps-hs-7nm-phy";
> > @@ -2266,20 +2280,6 @@ usb_1_ssphy: lanes@88e9200 {
> > };
> > };
> >
> > - dc_noc: interconnect@9160000 {
> > - compatible = "qcom,sm8150-dc-noc";
> > - reg = <0 0x09160000 0 0x3200>;
> > - #interconnect-cells = <1>;
> > - qcom,bcm-voters = <&apps_bcm_voter>;
> > - };
> > -
> > - gem_noc: interconnect@9680000 {
> > - compatible = "qcom,sm8150-gem-noc";
> > - reg = <0 0x09680000 0 0x3e200>;
> > - #interconnect-cells = <1>;
> > - qcom,bcm-voters = <&apps_bcm_voter>;
> > - };
> > -
> > usb_2_qmpphy: phy@88eb000 {
> > compatible = "qcom,sm8150-qmp-usb3-uni-phy";
> > reg = <0 0x088eb000 0 0x200>;
> > @@ -2344,7 +2344,7 @@ usb_1: usb@a6f8800 {
> >
> > resets = <&gcc GCC_USB30_PRIM_BCR>;
> >
> > - usb_1_dwc3: usb@a600000 {
> > + usb_1_dwc3: dwc3@a600000 {
>
> "usb@" is actually the right one, per the rather recent standardization
> across the dwc3 bindings.

Ok, yes that makes more sense.
Although a grep for the keyword 'dwc3@', does lead up to quite a few
qcom dts files which use 'dwc3@ 'instead of 'usb@', which seem
inconsistent as per the bindings doc (see [1]).

Maybe I can fix those in v2 as well.

[1]. Documentation/devicetree/bindings/usb/qcom,dwc3.yaml

Thanks,
Bhupesh
>
> > compatible = "snps,dwc3";
> > reg = <0 0x0a600000 0 0xcd00>;
> > interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
> > --
> > 2.31.1
> >