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Groups > linux.kernel > #1490411 > unrolled thread
| Started by | Rob Herring <robh@kernel.org> |
|---|---|
| First post | 2016-09-23 21:50 +0200 |
| Last post | 2016-09-26 11:10 +0200 |
| Articles | 2 — 2 participants |
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Re: [PATCH v5 2/2] usb: chipidea: imx: Add binding to disable USB 60Mhz clock Rob Herring <robh@kernel.org> - 2016-09-23 21:50 +0200
Re: [PATCH v5 2/2] usb: chipidea: imx: Add binding to disable USB 60Mhz clock Fabien Lahoudere <fabien.lahoudere@collabora.co.uk> - 2016-09-26 11:10 +0200
| From | Rob Herring <robh@kernel.org> |
|---|---|
| Date | 2016-09-23 21:50 +0200 |
| Subject | Re: [PATCH v5 2/2] usb: chipidea: imx: Add binding to disable USB 60Mhz clock |
| Message-ID | <skEDU-80F-21@gated-at.bofh.it> |
On Wed, Sep 21, 2016 at 11:07:07AM +0200, Fabien Lahoudere wrote: > This binding allow to disable the internal 60Mhz clock for USB host2 or > host3. > > Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.co.uk> > --- > Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 1 + > drivers/usb/chipidea/ci_hdrc_imx.c | 2 ++ > drivers/usb/chipidea/ci_hdrc_imx.h | 1 + > drivers/usb/chipidea/usbmisc_imx.c | 13 +++++++++++++ > 4 files changed, 17 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > index 0e03344..f83da66 100644 > --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt > @@ -84,6 +84,7 @@ i.mx specific properties > - over-current-active-high: over current signal polarity is high active, > typically over current signal polarity is low active. > - external-vbus-divider: enables off-chip resistor divider for Vbus > +- disable-int60ck: disable internal 60MHz clock for usb host2 or host3 on imx53 Doesn't this depend on something else like the type of phy connected? If not, when can you do this or not? Rob
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| From | Fabien Lahoudere <fabien.lahoudere@collabora.co.uk> |
|---|---|
| Date | 2016-09-26 11:10 +0200 |
| Message-ID | <slA5b-1Xk-3@gated-at.bofh.it> |
| In reply to | #1490411 |
Hi, On 23/09/16 21:47, Rob Herring wrote: > On Wed, Sep 21, 2016 at 11:07:07AM +0200, Fabien Lahoudere wrote: >> This binding allow to disable the internal 60Mhz clock for USB host2 or >> host3. >> >> Signed-off-by: Fabien Lahoudere <fabien.lahoudere@collabora.co.uk> >> --- >> Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 1 + >> drivers/usb/chipidea/ci_hdrc_imx.c | 2 ++ >> drivers/usb/chipidea/ci_hdrc_imx.h | 1 + >> drivers/usb/chipidea/usbmisc_imx.c | 13 +++++++++++++ >> 4 files changed, 17 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt >> index 0e03344..f83da66 100644 >> --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt >> +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt >> @@ -84,6 +84,7 @@ i.mx specific properties >> - over-current-active-high: over current signal polarity is high active, >> typically over current signal polarity is low active. >> - external-vbus-divider: enables off-chip resistor divider for Vbus >> +- disable-int60ck: disable internal 60MHz clock for usb host2 or host3 on imx53 > > Doesn't this depend on something else like the type of phy connected? If > not, when can you do this or not? > We can disable it in OTG mode and with ULPI phy and Sascha Hauer think we can do it without dt binding for example based on PHY mode. So I will remove the binding and just disable clock if ULPI is selected. > Rob > Fabien
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