Hi, Rajesh Bhagat <[email protected]> writes: > [ text/plain ] > Some freescale QorIQ platforms require to disable receiver detection > in P3 for correct detection of USB devices. If GUSB3PIPECTL(DISRXDETINP3) > is set, Core will change PHY power state to P2 and then perform receiver > detection. After receiver detection, Core will change PHY power state to > P3. Same quirk would be added in dts file in future patches. > > Signed-off-by: Sriram Dash <[email protected]> > Signed-off-by: Rajesh Bhagat <[email protected]> > --- > drivers/usb/dwc3/core.c | 6 ++++++ > drivers/usb/dwc3/core.h | 2 ++ > drivers/usb/dwc3/platform_data.h | 1 + > 3 files changed, 9 insertions(+), 0 deletions(-) > > diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c > index de5e01f..b2f2b08 100644 > --- a/drivers/usb/dwc3/core.c > +++ b/drivers/usb/dwc3/core.c > @@ -446,6 +446,9 @@ static int dwc3_phy_setup(struct dwc3 *dwc) > if (dwc->u2ss_inp3_quirk) > reg |= DWC3_GUSB3PIPECTL_U2SSINP3OK; > > + if (dwc->dis_rxdet_inp3_quirk) > + reg |= DWC3_GUSB3PIPECTL_DISRXDETINP3; > + > if (dwc->req_p1p2p3_quirk) > reg |= DWC3_GUSB3PIPECTL_REQP1P2P3; > > @@ -903,6 +906,8 @@ static int dwc3_probe(struct platform_device *pdev) > "snps,u2exit_lfps_quirk"); > dwc->u2ss_inp3_quirk = device_property_read_bool(dev, > "snps,u2ss_inp3_quirk"); > + dwc->dis_rxdet_inp3_quirk = device_property_read_bool(dev, > + "snps,dis_rxdet_inp3_quirk");
not documented under Documentation/devicetree/bindings/usb/dwc3.txt.
> diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
> index e4f8b90..41cc22c 100644
> --- a/drivers/usb/dwc3/core.h
> +++ b/drivers/usb/dwc3/core.h
> @@ -193,6 +193,7 @@
> /* Global USB3 PIPE Control Register */
> #define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
> #define DWC3_GUSB3PIPECTL_U2SSINP3OK (1 << 29)
> +#define DWC3_GUSB3PIPECTL_DISRXDETINP3 (1 << 28)
> #define DWC3_GUSB3PIPECTL_REQP1P2P3 (1 << 24)
> #define DWC3_GUSB3PIPECTL_DEP1P2P3(n) ((n) << 19)
> #define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK DWC3_GUSB3PIPECTL_DEP1P2P3(7)
> @@ -873,6 +874,7 @@ struct dwc3 {
>
> unsigned tx_de_emphasis_quirk:1;
> unsigned tx_de_emphasis:2;
> + unsigned dis_rxdet_inp3_quirk:1;
_must_ be sorted alphabetically and you _must_ update the kernel doc
above this structure.
> };
>
> /*
> -------------------------------------------------------------------------- */
> diff --git a/drivers/usb/dwc3/platform_data.h
> b/drivers/usb/dwc3/platform_data.h
> index 2bb4d3a..9df1dfb 100644
> --- a/drivers/usb/dwc3/platform_data.h
> +++ b/drivers/usb/dwc3/platform_data.h
> @@ -46,6 +46,7 @@ struct dwc3_platform_data {
>
> unsigned tx_de_emphasis_quirk:1;
> unsigned tx_de_emphasis:2;
> + unsigned dis_rxdet_inp3_quirk:1;
likewise.
--
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