On Tue, Sep 16, 2014 at 11:27:52AM -0700, Jack Pham wrote:
> Hi Andy,
>
> On Fri, Sep 12, 2014 at 02:28:08PM -0500, Andy Gross wrote:
> > +static int qcom_dwc3_hs_phy_init(struct qcom_dwc3_usb_phy *phy_dwc3)
> > +{
> > + u32 val;
> > +
> > + /*
> > + * HSPHY Initialization: Enable UTMI clock, select 19.2MHz fsel
> > + * enable clamping, and disable RETENTION (power-on default is ENABLED)
> > + */
> > + val = HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_DMSEHV_CLAMP |
> > + HSUSB_CTRL_RETENABLEN | HSUSB_CTRL_COMMONONN |
> > + HSUSB_CTRL_OTGSESSVLD_CLAMP | HSUSB_CTRL_ID_HV_CLAMP |
> > + HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_UTMI_OTG_VBUS_VALID |
> > + HSUSB_CTRL_UTMI_CLK_EN | HSUSB_CTRL_CLAMP_EN | 0x70;
> > +
> > + /* use core clock if external reference is not present */
> > + if (!phy_dwc3->xo_clk)
> > + val |= HSUSB_CTRL_USE_CLKCORE;
> > +
> > + writel(val, phy_dwc3->base + HSUSB_PHY_CTRL_REG);
> > + usleep_range(2000, 2200);
> > +
> > + /* Disable (bypass) VBUS and ID filters */
> > + writel(HSUSB_GCFG_XHCI_REV, phy_dwc3->base + QSCRATCH_GENERAL_CFG);
>
> Is this comment accurate? I believe this bit forces the IP to behave in
> XHCI rev 1.0. In which case, shouldn't it be done in the glue driver?
I'll double check. I was taking the bit values and converting them to names.
If this is doing that, then I'll move it to the glue.
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