linux-kernel - [PATCH] Fixed gpio polarity of gpio USB-phy reset.

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Date:	Thu, 14 Apr 2011 09:31:43 +0200
From:	Juergen Kilb <J.Kilb@...tec.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	dbrownell@...rs.sourceforge.net, balbi@...com, gregkh@...e.de,
	linux-usb@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, sameo@...ux.intel.com,
	Juergen Kilb <J.Kilb@...tec.de>
Subject: [PATCH] Fixed gpio polarity of gpio USB-phy reset.

With commit 19403165 a main part of ehci-omap.c moved to
drivers/mfd/omap-usb-host.c created by commit 17cdd29d.
Due to this reorganisation the polarity used to reset the
external USB phy changed and USB host doesn't recognize
any devices.

Signed-off-by: Juergen Kilb <J.Kilb@...tec.de>
---
 drivers/mfd/omap-usb-host.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 53450f4..491cac5 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -719,14 +719,14 @@ static int usbhs_enable(struct device *dev)
 			gpio_request(pdata->ehci_data->reset_gpio_port[0],
 						"USB1 PHY reset");
 			gpio_direction_output
-				(pdata->ehci_data->reset_gpio_port[0], 1);
+				(pdata->ehci_data->reset_gpio_port[0], 0);
 		}
 
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {
 			gpio_request(pdata->ehci_data->reset_gpio_port[1],
 						"USB2 PHY reset");
 			gpio_direction_output
-				(pdata->ehci_data->reset_gpio_port[1], 1);
+				(pdata->ehci_data->reset_gpio_port[1], 0);
 		}
 
 		/* Hold the PHY in RESET for enough time till DIR is high */
@@ -906,11 +906,11 @@ static int usbhs_enable(struct device *dev)
 
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
 			gpio_set_value
-				(pdata->ehci_data->reset_gpio_port[0], 0);
+				(pdata->ehci_data->reset_gpio_port[0], 1);
 
 		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
 			gpio_set_value
-				(pdata->ehci_data->reset_gpio_port[1], 0);
+				(pdata->ehci_data->reset_gpio_port[1], 1);
 	}
 
 end_count:
-- 
1.7.0.4

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