linux-kernel - Re: [PATCH v2 01/10] usb: cdns3: Add support for DRD CDNSP

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Date:   Tue, 10 Nov 2020 09:04:28 +0000
From:   Peter Chen <peter.chen@....com>
To:     Pawel Laszczak <pawell@...ence.com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "balbi@...nel.org" <balbi@...nel.org>,
        "colin.king@...onical.com" <colin.king@...onical.com>,
        "rogerq@...com" <rogerq@...com>,
        "kurahul@...ence.com" <kurahul@...ence.com>,
        "nsekhar@...com" <nsekhar@...com>
Subject: Re: [PATCH v2 01/10] usb: cdns3: Add support for DRD CDNSP

On 20-11-06 12:42:51, Pawel Laszczak wrote:
> - * Value of the strap pins.
> + * Value of the strap pins for:
> + * CDN3:

%/CDN3/CDNS3

Peter
>   * 000 - no default configuration
>   * 010 - Controller initiall configured as Host
>   * 100 - Controller initially configured as Device
> + * CDNSP:
> + * 000 - No default configuration.
> + * 010 - Controller initiall configured as Host.
> + * 100 - Controller initially configured as Device.
>   */
>  #define OTGSTS_STRAP(p)			(((p) & GENMASK(14, 12)) >> 12)
>  #define OTGSTS_STRAP_NO_DEFAULT_CFG	0x00
>  #define OTGSTS_STRAP_HOST_OTG		0x01
>  #define OTGSTS_STRAP_HOST		0x02
>  #define OTGSTS_STRAP_GADGET		0x04
> +#define OTGSTS_CDNSP_STRAP_HOST		0x01
> +#define OTGSTS_CDNSP_STRAP_GADGET	0x02
> +
>  /* Host mode is turned on. */
> -#define OTGSTS_XHCI_READY		BIT(26)
> +#define OTGSTS_CDNS3_XHCI_READY		BIT(26)
> +#define OTGSTS_CDNSP_XHCI_READY		BIT(27)
> +
>  /* "Device mode is turned on .*/
> -#define OTGSTS_DEV_READY		BIT(27)
> +#define OTGSTS_CDNS3_DEV_READY		BIT(27)
> +#define OTGSTS_CDNSP_DEV_READY		BIT(26)
>  
>  /* OTGSTATE- bitmasks */
>  #define OTGSTATE_DEV_STATE_MASK		GENMASK(2, 0)
> @@ -152,6 +194,8 @@ struct cdns3_otg_common_regs {
>  #define OVERRIDE_IDPULLUP		BIT(0)
>  /* Only for CDNS3_CONTROLLER_V0 version */
>  #define OVERRIDE_IDPULLUP_V0		BIT(24)
> +/* Vbusvalid/Sesvalid override select. */
> +#define OVERRIDE_SESS_VLD_SEL		BIT(10)
>  
>  /* PHYRST_CFG - bitmasks */
>  #define PHYRST_CFG_PHYRST_A_ENABLE     BIT(0)
> @@ -170,6 +214,5 @@ int cdns3_drd_gadget_on(struct cdns3 *cdns);
>  void cdns3_drd_gadget_off(struct cdns3 *cdns);
>  int cdns3_drd_host_on(struct cdns3 *cdns);
>  void cdns3_drd_host_off(struct cdns3 *cdns);
> -int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode);
>  
>  #endif /* __LINUX_CDNS3_DRD */
> -- 
> 2.17.1
> 

-- 

Thanks,
Peter Chen