From: gautam.vivek@samsung.com (Vivek Gautam)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 4/4] phy: exynos5-usbdrd: Calibrate LOS levels for exynos5420/5800
Date: Wed, 10 Sep 2014 09:09:57 +0530 [thread overview]
Message-ID: <CAFp+6iHRJ5oAA+K1Y0Y2uadPhsR6wmrd13DM39dqiL4jj+swHg@mail.gmail.com> (raw)
In-Reply-To: <CAFp+6iHJKmeothDM67WW60Sqqj8BQroBCzZ8zecKwM_GcYL8HA@mail.gmail.com>
On Wed, Sep 10, 2014 at 9:07 AM, Vivek Gautam <gautam.vivek@samsung.com> wrote:
> adding Julius here,
i think i had missed adding Julius for this entire series :-(
I should be more careful with the CC list in future.
Added his chromium id, since that seems to be more active.
>
>
> On Tue, Sep 9, 2014 at 8:12 PM, Felipe Balbi <balbi@ti.com> wrote:
>> On Tue, Sep 09, 2014 at 07:19:50AM +0530, Vivek Gautam wrote:
>>> Hi,
>>>
>>>
>>> On Mon, Sep 8, 2014 at 7:14 PM, Felipe Balbi <balbi@ti.com> wrote:
>>> > Hi,
>>> >
>>> > On Mon, Sep 08, 2014 at 09:53:09AM +0530, Vivek Gautam wrote:
>>> >> On Fri, Sep 5, 2014 at 11:26 PM, Felipe Balbi <balbi@ti.com> wrote:
>>> >> > On Thu, Sep 04, 2014 at 12:01:19PM +0530, Vivek Gautam wrote:
>>> >> >> > Don't we have phy_power_on()
>>> >> >> > for that ? It looks like you could just as well do this from
>>> >> >> > phy_power_on() ?
>>> >> >>
>>> >> >> No, unfortunately keeping these calibration settings in phy_power_on()
>>> >> >> doesn't help, since we need to do this after XHCI reset has happened.
>>> >> >
>>> >> > teach xHCI about PHYs ?
>>> >>
>>> >> sorry i couldn't understand you here.
>>> >> Aren't we trying to do the same with Heikki's patch about dwc3 :
>>> >> [PATCH 6/6] usb: dwc3: host: convey the PHYs to xhci
>>> >>
>>> >> and the 2nd patch in this series :
>>> >> [PATCH v6 2/4] usb: host: xhci-plat: Get PHYs for xhci's hcds
>>> >>
>>> >> Is there something else that is expected ?
>>> >
>>> > right, use that to call phy_init() at the right time, then you need to
>>> > add a new ->calibrate() method which, likely, will only be used by you
>>> > ;-)
>>>
>>> so you mean, the xhci should itself call phy_init() at a time suitable,
>>> so that ->calibrate() is not required at all ?
>>>
>>> i think you meant there - "then you __do not__ need to
>>
>> right :-)
>
> alright, i will prepare a patch for the suggested change.
>
> But AFAI remember we had discussion for this patch in earlier version,
> and Julius suggested to use a generic approach for such
> change wherein other users in future may be able to use the
> facility.
> Julius any thoughts about the change suggested by Felipe.
--
Best Regards
Vivek Gautam
Samsung R&D Institute, Bangalore
India
next prev parent reply other threads:[~2014-09-10 3:39 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 11:12 [PATCH v6 0/4] Fine tune USB 3.0 PHY on exynos5420 Vivek Gautam
2014-09-02 11:12 ` [PATCH v6 1/4] phy: Add provision for calibrating phy Vivek Gautam
2014-09-02 11:12 ` [PATCH v6 2/4] usb: host: xhci-plat: Get PHYs for xhci's hcds Vivek Gautam
2014-09-02 11:12 ` [PATCH v6 3/4] usb: hcd: Calibrate PHY post hcd reset Vivek Gautam
2014-09-02 11:12 ` [PATCH v6 4/4] phy: exynos5-usbdrd: Calibrate LOS levels for exynos5420/5800 Vivek Gautam
2014-09-02 14:34 ` Felipe Balbi
2014-09-03 7:29 ` Vivek Gautam
2014-09-03 14:42 ` Felipe Balbi
2014-09-04 6:31 ` Vivek Gautam
2014-09-05 17:56 ` Felipe Balbi
2014-09-08 4:23 ` Vivek Gautam
2014-09-08 13:44 ` Felipe Balbi
2014-09-09 1:49 ` Vivek Gautam
2014-09-09 14:42 ` Felipe Balbi
2014-09-10 3:37 ` Vivek Gautam
2014-09-10 3:39 ` Vivek Gautam [this message]
2014-09-10 4:53 ` Felipe Balbi
2014-09-10 5:23 ` Vivek Gautam
2014-09-10 7:56 ` Vivek Gautam
2014-09-10 20:22 ` Julius Werner
2014-09-11 3:20 ` Vivek Gautam
2014-09-11 15:40 ` Kishon Vijay Abraham I
2014-09-11 16:54 ` Felipe Balbi
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