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SubjectRe: [PATCH v2 0/2] usb: dwc2: fill in gadget caps, configure it for stm32mp15
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On 10/8/21 9:53 AM, Fabrice Gasnier wrote:
> This patchset fills in 'otg_caps' of the usb_gadget structure, and
> configures it on stm32mp15.
>
> When dwc2 is configured as dual role (OTG), the USB gadget descriptors
> (device mode) are configured via configfs. This lead in calling
> usb_otg_descriptor_init().
> In usb_otg_descriptor_init() (drivers/usb/gadget/config.c):
> - If otg caps structure is provided -> use it
> - If otg caps structure isn't provided -> HNP and SRP are enabled by default
>
> This could lead to a configuration mismatch beetween:
> - OTG controller: HNP and SRP aren't enabled
> - gadget descriptors: HNP and SRP are advertised
>
> ---

Hi All, I just sent a v3 of this series, to add the dt-bindings.

Please rather review the v3.

Thanks in advance,
Fabrice


> Changes in v2:
> - replace otg_cap bit field by otg_caps structure.
> - Fix build issue when HOST only mode is selected [1]
> - DT patch for stm32mp151 merged in v1, so not resent
>
> [1] https://syzkaller.appspot.com/bug?extid=7af597ce2b38596c16ea
>
> Fabrice Gasnier (2):
> usb: dwc2: add otg_rev and otg_caps information for gadget driver
> usb: dwc2: stm32mp15: set otg_rev
>
> drivers/usb/dwc2/core.h | 19 ++++++------
> drivers/usb/dwc2/debugfs.c | 4 ++-
> drivers/usb/dwc2/gadget.c | 1 +
> drivers/usb/dwc2/hcd.c | 12 +++-----
> drivers/usb/dwc2/params.c | 75 ++++++++++++++++++++++++++--------------------
> 5 files changed, 59 insertions(+), 52 deletions(-)
>

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