On Thu, Feb 3, 2022 at 7:09 AM Angus Ainslie <[email protected]> wrote: > > The kernel devicetree has definitions for port and hub nodes as subnodes > to the USB devices. These subnodes don't contain all of the data required > to properly configure the dwc3. Check the parent nodes if the data is not > in the port/hub node. > > Here's an example from the librem5 kernel dts file > > &usb_dwc3_0 { > #address-cells = <1>; > #size-cells = <0>; > dr_mode = "otg"; > snps,dis_u3_susphy_quirk; > status = "okay"; > > port@0 { > reg = <0>; > > typec_hs: endpoint { > remote-endpoint = <&usb_con_hs>; > }; > }; > > port@1 { > reg = <1>; > > typec_ss: endpoint { > remote-endpoint = <&usb_con_ss>; > }; > }; > }; > > &usb_dwc3_1 { > dr_mode = "host"; > status = "okay"; > #address-cells = <1>; > #size-cells = <0>; > > /* Microchip USB2642 */ > hub@1 { > compatible = "usb424,2640"; > reg = <1>; > #address-cells = <1>; > #size-cells = <0>; > > mass-storage@1 { > compatible = "usb424,4041"; > reg = <1>; > }; > }; > }; > > Signed-off-by: Angus Ainslie <[email protected]> > --- > drivers/usb/dwc3/dwc3-generic.c | 25 ++++++++++++++++++++----- > 1 file changed, 20 insertions(+), 5 deletions(-) >
Reviewed-by: Bin Meng <[email protected]>
