On 06/08/2016 12:35 AM, Steve Rae wrote:
> Define CONFIG_USB_GADGET_DWC2_OTG_PHY_BUS_WIDTH_8 to allow the
> physical interface to be 8-bit (rather than 16-bit).
>
> Signed-off-by: Steve Rae <s...@broadcom.com>
Applied both, thanks.
> ---
> from [1] (line ~124)
>
> /* The Kona PHY supports an 8-bit wide UTMI interface */
> [...snip...]
>
> module_platform_driver(bcm_kona_usb2_driver);
>
> MODULE_ALIAS("platform:bcm-kona-usb2");
> MODULE_AUTHOR("Matt Porter <mpor...@linaro.org>");
> MODULE_DESCRIPTION("BCM Kona USB 2.0 PHY driver");
> MODULE_LICENSE("GPL v2");
>
> [1]
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/phy/phy-bcm-kona-usb2.c
>
> Changes in v5: None
> Changes in v4:
> - split defconfig's into separate patch (per Marek)
>
> Changes in v3:
> - implement Marek's suggestion
>
> Changes in v2:
> - implement as Kconfig
>
> drivers/usb/gadget/Kconfig | 10 ++++++++++
> drivers/usb/gadget/dwc2_udc_otg.c | 4 ++++
> 2 files changed, 14 insertions(+)
>
> diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
> index a35a1c7..ae62476 100644
> --- a/drivers/usb/gadget/Kconfig
> +++ b/drivers/usb/gadget/Kconfig
> @@ -52,6 +52,16 @@ config USB_GADGET_DWC2_OTG
> driver to operate in Peripheral mode. This option requires
> USB_GADGET to be enabled.
>
> +if USB_GADGET_DWC2_OTG
> +
> +config USB_GADGET_DWC2_OTG_PHY_BUS_WIDTH_8
> + bool "DesignWare USB2.0 HS OTG controller 8-bit PHY bus width"
> + help
> + Set the Designware USB2.0 high-speed OTG controller
> + PHY interface width to 8 bits, rather than the default (16 bits).
> +
> +endif # USB_GADGET_DWC2_OTG
> +
> config CI_UDC
> bool "ChipIdea device controller"
> select USB_GADGET_DUALSPEED
> diff --git a/drivers/usb/gadget/dwc2_udc_otg.c
> b/drivers/usb/gadget/dwc2_udc_otg.c
> index cb20b00..a23278d 100644
> --- a/drivers/usb/gadget/dwc2_udc_otg.c
> +++ b/drivers/usb/gadget/dwc2_udc_otg.c
> @@ -415,7 +415,11 @@ static void reconfig_usbd(struct dwc2_udc *dev)
> |0<<7 /* Ulpi DDR sel*/
> |0<<6 /* 0: high speed utmi+, 1: full speed serial*/
> |0<<4 /* 0: utmi+, 1:ulpi*/
> +#ifdef CONFIG_USB_GADGET_DWC2_OTG_PHY_BUS_WIDTH_8
> + |0<<3 /* phy i/f 0:8bit, 1:16bit*/
> +#else
> |1<<3 /* phy i/f 0:8bit, 1:16bit*/
> +#endif
> |0x7<<0; /* HS/FS Timeout**/
>
> if (dev->pdata->usb_gusbcfg)
>
--
Best regards,
Marek Vasut
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