[PATCH] usb: xhci-dwc3: Add support for USB 3.1 controllers

[Mark Kettenis]

This adds support for the DWC_sub31 controllers such as those
found on Apple's M1 SoC.  This version of the controller
seems to work fine with the existing driver.

Signed-off-by: Mark Kettenis 
---
 drivers/usb/host/xhci-dwc3.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
index 3e0ae80cec..a2ea40bae0 100644
--- a/drivers/usb/host/xhci-dwc3.c
+++ b/drivers/usb/host/xhci-dwc3.c
@@ -70,7 +70,8 @@ int dwc3_core_init(struct dwc3 *dwc3_reg)
 
revision = readl(&dwc3_reg->g_snpsid);
/* This should read as U3 followed by revision number */
-   if ((revision & DWC3_GSNPSID_MASK) != 0x5533) {
+   if ((revision & DWC3_GSNPSID_MASK) != 0x5533 &&
+   (revision & DWC3_GSNPSID_MASK) != 0x3331) {
puts("this is not a DesignWare USB3 DRD Core\n");
return -1;
}
-- 
2.33.0

Re: [PATCH] usb: xhci-dwc3: Add support for USB 3.1 controllers

[Bin Meng]

On Thu, Sep 16, 2021 at 10:00 PM Mark Kettenis  wrote:
>
> This adds support for the DWC_sub31 controllers such as those
> found on Apple's M1 SoC.  This version of the controller
> seems to work fine with the existing driver.
>
> Signed-off-by: Mark Kettenis 
> ---
>  drivers/usb/host/xhci-dwc3.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>

Reviewed-by: Bin Meng 

Re: [PATCH] usb: xhci-dwc3: Add support for USB 3.1 controllers

[Bin Meng]

Hi Marek,

On Thu, Sep 16, 2021 at 10:08 PM Bin Meng  wrote:
>
> On Thu, Sep 16, 2021 at 10:00 PM Mark Kettenis  wrote:
> >
> > This adds support for the DWC_sub31 controllers such as those
> > found on Apple's M1 SoC.  This version of the controller
> > seems to work fine with the existing driver.
> >
> > Signed-off-by: Mark Kettenis 
> > ---
> >  drivers/usb/host/xhci-dwc3.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
>
> Reviewed-by: Bin Meng 

I see this is assigned to me on patchwork. Would you like this to go
via the x86 tree?

Regards,
Bin

Re: [PATCH] usb: xhci-dwc3: Add support for USB 3.1 controllers

[Marek Vasut]

On 9/19/21 10:40 AM, Bin Meng wrote:

Hi Marek,

On Thu, Sep 16, 2021 at 10:08 PM Bin Meng  wrote:


On Thu, Sep 16, 2021 at 10:00 PM Mark Kettenis  wrote:


This adds support for the DWC_sub31 controllers such as those
found on Apple's M1 SoC.  This version of the controller
seems to work fine with the existing driver.

Signed-off-by: Mark Kettenis 
---
  drivers/usb/host/xhci-dwc3.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)



Reviewed-by: Bin Meng 


I see this is assigned to me on patchwork. Would you like this to go
via the x86 tree?


Since it's just one patch, I suspect Tom can just pick it directly.

Re: [PATCH] usb: xhci-dwc3: Add support for USB 3.1 controllers

[Bin Meng]

On Mon, Sep 20, 2021 at 6:44 AM Marek Vasut  wrote:
>
> On 9/19/21 10:40 AM, Bin Meng wrote:
> > Hi Marek,
> >
> > On Thu, Sep 16, 2021 at 10:08 PM Bin Meng  wrote:
> >>
> >> On Thu, Sep 16, 2021 at 10:00 PM Mark Kettenis  
> >> wrote:
> >>>
> >>> This adds support for the DWC_sub31 controllers such as those
> >>> found on Apple's M1 SoC.  This version of the controller
> >>> seems to work fine with the existing driver.
> >>>
> >>> Signed-off-by: Mark Kettenis 
> >>> ---
> >>>   drivers/usb/host/xhci-dwc3.c | 3 ++-
> >>>   1 file changed, 2 insertions(+), 1 deletion(-)
> >>>
> >>
> >> Reviewed-by: Bin Meng 
> >
> > I see this is assigned to me on patchwork. Would you like this to go
> > via the x86 tree?
>
> Since it's just one patch, I suspect Tom can just pick it directly.

Thanks, I have re-assigned it to Tom on patchwork.

Regards,
Bin