Hi,
Rajesh Bhagat <rajesh.bhagat@xxxxxxx> 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 <sriram.dash@xxxxxxx>
> Signed-off-by: Rajesh Bhagat <rajesh.bhagat@xxxxxxx>
> ---
> 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.
--
balbi
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