[U-Boot] [PATCH 0/2] usb: xhci: dwc3 core reset requirement changes

[U-Boot] [PATCH 0/2] usb: xhci: dwc3 core reset requirement changes

[Rajesh Bhagat]

This patch series adds the reset delay requirement in common dwc3 code and removes an 
unused function in usb fsl driver. 

Rajesh Bhagat (2):
  usb: xhci: dwc3: Adding reset delay requirement as per dwc3     
    databook
  usb: xhci: fsl: Removing unused function usb_phy_reset

 drivers/usb/host/xhci-dwc3.c |  2 ++
 drivers/usb/host/xhci-fsl.c  | 17 -----------------
 2 files changed, 2 insertions(+), 17 deletions(-)

-- 
2.6.2.198.g614a2ac

[U-Boot] [PATCH 1/2] usb: xhci: dwc3: Adding reset delay requirement as per dwc3 databook

[Rajesh Bhagat]

As per dwc3 databook, delay is required before taking the core out of reset.
This delay is required so that the PHY are stable, and then we can take core
out of reset.

Reference is taken from linux dwc3 code, file: drivers/usb/dwc3/core.c.

Signed-off-by: Sriram Dash <sriram.dash@freescale.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@freescale.com>
---
 drivers/usb/host/xhci-dwc3.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/host/xhci-dwc3.c b/drivers/usb/host/xhci-dwc3.c
index c722c50..33961cd 100644
--- a/drivers/usb/host/xhci-dwc3.c
+++ b/drivers/usb/host/xhci-dwc3.c
@@ -44,6 +44,8 @@ void dwc3_core_soft_reset(struct dwc3 *dwc3_reg)
 	/* reset USB3 phy - if required */
 	dwc3_phy_reset(dwc3_reg);
 
+	mdelay(100);
+
 	/* After PHYs are stable we can take Core out of reset state */
 	clrbits_le32(&dwc3_reg->g_ctl, DWC3_GCTL_CORESOFTRESET);
 }
-- 
2.6.2.198.g614a2ac

[U-Boot] [PATCH 2/2] usb: xhci: fsl: Removing unused function usb_phy_reset

[Rajesh Bhagat]

This patch removes unsued function usb_phy_reset, rather common function
dwc3_phy_reset is used.

Signed-off-by: Rajesh Bhagat <rajesh.bhagat@freescale.com>
---
 drivers/usb/host/xhci-fsl.c | 17 -----------------
 1 file changed, 17 deletions(-)

diff --git a/drivers/usb/host/xhci-fsl.c b/drivers/usb/host/xhci-fsl.c
index 6481e07..05f09d7 100644
--- a/drivers/usb/host/xhci-fsl.c
+++ b/drivers/usb/host/xhci-fsl.c
@@ -27,23 +27,6 @@ __weak int __board_usb_init(int index, enum usb_init_type init)
 	return 0;
 }
 
-void usb_phy_reset(struct dwc3 *dwc3_reg)
-{
-	/* Assert USB3 PHY reset */
-	setbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST);
-
-	/* Assert USB2 PHY reset */
-	setbits_le32(&dwc3_reg->g_usb2phycfg, DWC3_GUSB2PHYCFG_PHYSOFTRST);
-
-	mdelay(200);
-
-	/* Clear USB3 PHY reset */
-	clrbits_le32(&dwc3_reg->g_usb3pipectl[0], DWC3_GUSB3PIPECTL_PHYSOFTRST);
-
-	/* Clear USB2 PHY reset */
-	clrbits_le32(&dwc3_reg->g_usb2phycfg, DWC3_GUSB2PHYCFG_PHYSOFTRST);
-}
-
 static int fsl_xhci_core_init(struct fsl_xhci *fsl_xhci)
 {
 	int ret = 0;
-- 
2.6.2.198.g614a2ac