Hi,
On 26/09/16 10:18, Sascha Hauer 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@xxxxxxxxxxxxxxx>
---
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
Why do we need a binding for this? I would assume the driver should know
whether this clock is in use or not. If it doesn't that's a problem we
should solve.
Yes you are right because we can disable this clock for OTG and with
ULPI PHY. I think that it will be better to have a dt binding but if it
is useless I can remove it and disable clock when ULPI mode is enabled.
Sascha
Fabien
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