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authorRamneek Mehresh <ramneek.mehresh@freescale.com>2011-03-23 15:20:43 +0530
committerKumar Gala <galak@kernel.crashing.org>2011-09-29 19:01:03 -0500
commit1b719e66548a50ac763eebf9513bf1e58e8fb6ff (patch)
tree7812fe120bb791f5515985ef0dd5ec1e91673247 /drivers
parent1d5e7fb403257d62f0f2419cb83fdf6b0f02f215 (diff)
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powerpc/85xx: Add ULPI and UTMI USB Phy support for P1010/P1014
Add UTMI and ULPI PHY support for USB controller on qoriq series of processors with internal UTMI PHY implemented, for example P1010/P1014 - Use both getenv() and hwconfig to get USB phy type till getenv() is depricated - Introduce CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY to specify if soc has internal UTMI phy Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Acked-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/host/ehci-fsl.c39
1 files changed, 36 insertions, 3 deletions
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 6e0043a..5a65d92 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -1,5 +1,5 @@
/*
- * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ * (C) Copyright 2009, 2011 Freescale Semiconductor, Inc.
*
* (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
*
@@ -26,6 +26,7 @@
#include <usb.h>
#include <asm/io.h>
#include <usb/ehci-fsl.h>
+#include <hwconfig.h>
#include "ehci.h"
#include "ehci-core.h"
@@ -39,6 +40,11 @@
int ehci_hcd_init(void)
{
struct usb_ehci *ehci;
+ char usb_phy[5];
+ const char *phy_type = NULL;
+ size_t len;
+
+ usb_phy[0] = '\0';
ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB_ADDR;
hccr = (struct ehci_hccr *)((uint32_t)&ehci->caplength);
@@ -52,10 +58,37 @@ int ehci_hcd_init(void)
out_be32(&ehci->snoop2, 0x80000000 | SNOOP_SIZE_2GB);
/* Init phy */
- if (!strcmp(getenv("usb_phy_type"), "utmi"))
- out_le32(&(hcor->or_portsc[0]), PORT_PTS_UTMI);
+ if (hwconfig_sub("usb1", "phy_type"))
+ phy_type = hwconfig_subarg("usb1", "phy_type", &len);
else
+ phy_type = getenv("usb_phy_type");
+
+ if (!phy_type) {
+#ifdef CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
+ /* if none specified assume internal UTMI */
+ strcpy(usb_phy, "utmi");
+ phy_type = usb_phy;
+#else
+ printf("WARNING: USB phy type not defined !!\n");
+ return -1;
+#endif
+ }
+
+ if (!strcmp(phy_type, "utmi")) {
+#if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY)
+ setbits_be32(&ehci->control, PHY_CLK_SEL_UTMI);
+ setbits_be32(&ehci->control, UTMI_PHY_EN);
+ udelay(1000); /* delay required for PHY Clk to appear */
+#endif
+ out_le32(&(hcor->or_portsc[0]), PORT_PTS_UTMI);
+ } else {
+#if defined(CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY)
+ clrbits_be32(&ehci->control, UTMI_PHY_EN);
+ setbits_be32(&ehci->control, PHY_CLK_SEL_ULPI);
+ udelay(1000); /* delay required for PHY Clk to appear */
+#endif
out_le32(&(hcor->or_portsc[0]), PORT_PTS_ULPI);
+ }
/* Enable interface. */
setbits_be32(&ehci->control, USB_EN);