[U-Boot] [PATCH v2 2/3] usb: host: xhci-dwc3: Add dual role mode support from DT

[Marek Vasut]

On 05/22/2017 09:42 AM, patrice.chotard at st.com wrote:
> From: Patrice Chotard <patrice.chotard at st.com>
> 
> DWC3 dual role mode is selected using DT "dr_mode"
> property. If not found, DWC3 controller is configured
> in HOST mode by default
> 
> Signed-off-by: Patrice Chotard <patrice.chotard at st.com>

Reviewed-by: Marek Vasut <marex at denx.de>

> ---
> 
> v2:	_ none
> 
>  drivers/usb/host/xhci-dwc3.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
> index ab75fb7..8367ba2 100644
> --- a/drivers/usb/host/xhci-dwc3.c
> +++ b/drivers/usb/host/xhci-dwc3.c
> @@ -15,6 +15,7 @@
>  #include "xhci.h"
>  #include <asm/io.h>
>  #include <linux/usb/dwc3.h>
> +#include <linux/usb/otg.h>
>  
>  DECLARE_GLOBAL_DATA_PTR;
>  
> @@ -114,6 +115,7 @@ static int xhci_dwc3_probe(struct udevice *dev)
>  	struct xhci_hcor *hcor;
>  	struct xhci_hccr *hccr;
>  	struct dwc3 *dwc3_reg;
> +	enum usb_dr_mode dr_mode;
>  
>  	hccr = (struct xhci_hccr *)dev_get_addr(dev);
>  	hcor = (struct xhci_hcor *)((phys_addr_t)hccr +
> @@ -123,6 +125,13 @@ static int xhci_dwc3_probe(struct udevice *dev)
>  
>  	dwc3_core_init(dwc3_reg);
>  
> +	dr_mode = usb_get_dr_mode(dev_of_offset(dev));
> +	if (dr_mode == USB_DR_MODE_UNKNOWN)
> +		/* by default set dual role mode to HOST */
> +		dr_mode = USB_DR_MODE_HOST;
> +
> +	dwc3_set_mode(dwc3_reg, dr_mode);
> +
>  	return xhci_register(dev, hccr, hcor);
>  }
>  
> 


-- 
Best regards,
Marek Vasut