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authorHans de Goede <hdegoede@redhat.com>2015-03-29 13:50:46 +0300
committerFelipe Balbi <balbi@ti.com>2015-05-27 20:20:36 +0300
commit24fe86a617c550fb9bdc6c8bd7cf647d3955f8ba (patch)
tree64618dd2e6e7af38b76e0a710d1408e3c85e4517 /include/linux/phy
parent7a64c7283ef83c82cb2125339c5d12092256614e (diff)
downloadlinux-24fe86a617c550fb9bdc6c8bd7cf647d3955f8ba.tar.xz
phy: sun4i-usb: Add a sunxi specific function for setting squelch-detect
The sunxi otg phy has a bug where it wrongly detects a high speed squelch when reset on the root port gets de-asserted with a lo-speed device. The workaround for this is to disable squelch detect before de-asserting reset, and re-enabling it after the reset de-assert is done. Add a sunxi specific phy function to allow the sunxi-musb glue to do this. Acked-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'include/linux/phy')
-rw-r--r--include/linux/phy/phy-sun4i-usb.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/phy/phy-sun4i-usb.h b/include/linux/phy/phy-sun4i-usb.h
new file mode 100644
index 000000000000..50aed92ea89c
--- /dev/null
+++ b/include/linux/phy/phy-sun4i-usb.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2015 Hans de Goede <hdegoede@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef PHY_SUN4I_USB_H_
+#define PHY_SUN4I_USB_H_
+
+#include "phy.h"
+
+/**
+ * sun4i_usb_phy_set_squelch_detect() - Enable/disable squelch detect
+ * @phy: reference to a sun4i usb phy
+ * @enabled: wether to enable or disable squelch detect
+ */
+void sun4i_usb_phy_set_squelch_detect(struct phy *phy, bool enabled);
+
+#endif