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authorStefan Agner <stefan.agner@toradex.com>2016-07-13 00:25:38 -0700
committerStefano Babic <sbabic@denx.de>2016-07-19 19:52:14 +0200
commitc4483093f38f20c4122bd27456bffdda518e4d71 (patch)
treed6b6735a7ce1cff267cd97d3371e732ac8c3f3b4 /drivers
parent9a88180bfbb6ee7b2fba5516391ff0e611794de5 (diff)
usb: ehci-mx6: introduce config for high active power pin
Add a new config CONFIG_MXC_USB_OTG_HACTIVE which configures the OTG Power Pin to be high active. Low active is the reset value of the affected configuration register, hence the config option is named by the non-reset configuration. Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/host/Kconfig9
-rw-r--r--drivers/usb/host/ehci-mx6.c4
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 7992cb4632..09db938f20 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -81,6 +81,15 @@ config USB_EHCI_MX7
---help---
Enables support for the on-chip EHCI controller on i.MX7 SoCs.
+if USB_EHCI_MX7
+
+config MXC_USB_OTG_HACTIVE
+ bool "USB Power pin high active"
+ ---help---
+ Set the USB Power pin polarity to be high active (PWR_POL)
+
+endif
+
config USB_EHCI_MSM
bool "Support for Qualcomm on-chip EHCI USB controller"
depends on DM_USB
diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
index 277f461646..8352c2bfc5 100644
--- a/drivers/usb/host/ehci-mx6.c
+++ b/drivers/usb/host/ehci-mx6.c
@@ -216,7 +216,11 @@ static void usb_power_config(int index)
clrbits_le32(phy_cfg2, USBNC_PHYCFG2_ACAENB);
/* Set power polarity to high active */
+#ifdef CONFIG_MXC_USB_OTG_HACTIVE
setbits_le32(ctrl, UCTRL_PWR_POL);
+#else
+ clrbits_le32(ctrl, UCTRL_PWR_POL);
+#endif
}
int usb_phy_mode(int port)