From 6ce4f3567bb597a7762cf62a45ed6311aa24639a Mon Sep 17 00:00:00 2001
From: yangkai <yangkai@ubuntu-fs>
Date: Fri, 18 Feb 2011 16:28:20 +0800
Subject: [PATCH] adjust usb phy suspend timing

---
 drivers/usb/dwc_otg/dwc_otg_driver.c | 4 +++-
 drivers/usb/dwc_otg/dwc_otg_hcd.c    | 2 +-
 drivers/usb/dwc_otg/dwc_otg_pcd.c    | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/dwc_otg/dwc_otg_driver.c b/drivers/usb/dwc_otg/dwc_otg_driver.c
index 54cd562390d9..9aa650cb4321 100755
--- a/drivers/usb/dwc_otg/dwc_otg_driver.c
+++ b/drivers/usb/dwc_otg/dwc_otg_driver.c
@@ -364,6 +364,7 @@ static ssize_t dwc_otg_enable_store( struct device *_dev,
         if (_core_if->hcd_cb && _core_if->hcd_cb->suspend) {
                 _core_if->hcd_cb->suspend( _core_if->hcd_cb->p, val);
         }
+        udelay(3);
         clk_disable(otg_dev->phyclk);
         clk_disable(otg_dev->ahbclk);
 	}
@@ -956,6 +957,7 @@ static __devinit int dwc_otg_driver_probe(struct platform_device *pdev)
 	
     *otg_phy_con1 = regval;
     
+    udelay(3);
     clk_disable(phyclk);
     clk_disable(ahbclk);
 #endif
@@ -983,7 +985,7 @@ static __devinit int dwc_otg_driver_probe(struct platform_device *pdev)
     regval |= (0x01<<13);    // software control
 
     *otg_phy_con1 = regval;
-    
+    udelay(3);
     clk_disable(phyclk);
     clk_disable(ahbclk);
 #endif
diff --git a/drivers/usb/dwc_otg/dwc_otg_hcd.c b/drivers/usb/dwc_otg/dwc_otg_hcd.c
index 5271b33000ae..cd49d0788ad4 100755
--- a/drivers/usb/dwc_otg/dwc_otg_hcd.c
+++ b/drivers/usb/dwc_otg/dwc_otg_hcd.c
@@ -104,7 +104,7 @@ static int dwc_otg_hcd_suspend(struct usb_hcd *hcd)
                 core_if->hcd_cb->suspend( core_if->hcd_cb->p, 0);
         }
     }
-    udelay(1);
+    udelay(3);
     clk_disable(core_if->otg_dev->phyclk);
     clk_disable(core_if->otg_dev->ahbclk);
     //power off
diff --git a/drivers/usb/dwc_otg/dwc_otg_pcd.c b/drivers/usb/dwc_otg/dwc_otg_pcd.c
index 1ade6b05a809..e6733894e4f5 100755
--- a/drivers/usb/dwc_otg/dwc_otg_pcd.c
+++ b/drivers/usb/dwc_otg/dwc_otg_pcd.c
@@ -1552,7 +1552,7 @@ int rk28_usb_suspend( int exitsuspend )
         pcd->phy_suspend = 1;
         *otg_phy_con1 |= (0x01<<2);
         *otg_phy_con1 &= ~(0x01<<3);    // enter suspend.
-        udelay(1);
+        udelay(3);
         clk_disable(pcd->otg_dev->phyclk);
         clk_disable(pcd->otg_dev->ahbclk);
         //*otg_phy_con1 &= ~(0x01<<2);
-- 
2.34.1