[U-Boot] [PATCH 1/2] powerpc/85xx: Add ULPI and UTMI USB Phy support for P1010/P1014

[Kumar Gala]

From: Ramneek Mehresh <ramneek.mehresh at freescale.com>

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 at freescale.com>
CC: Remy Bohmer <linux at bohmer.net>
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
 arch/powerpc/include/asm/config_mpc85xx.h |    2 +
 drivers/usb/host/ehci-fsl.c               |   37 ++++++++++++++++++++++++++--
 2 files changed, 36 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 04ca989..d9d04e7 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -97,6 +97,7 @@
 #define CONFIG_NUM_DDR_CONTROLLERS	1
 #define CONFIG_SYS_CCSRBAR_DEFAULT	0xff700000
 #define CONFIG_SYS_FSL_PCIE_COMPAT	"fsl,qoriq-pcie-v2.2"
+#define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
 
 /* P1011 is single core version of P1020 */
 #elif defined(CONFIG_P1011)
@@ -141,6 +142,7 @@
 #define CONFIG_SYS_FSL_ERRATUM_ESDHC111
 #define CONFIG_NUM_DDR_CONTROLLERS	1
 #define CONFIG_SYS_CCSRBAR_DEFAULT	0xff700000
+#define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
 
 /* P1015 is single core version of P1024 */
 #elif defined(CONFIG_P1015)
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 6e0043a..66b7da5 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 +58,35 @@ 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);
-- 
1.7.3.4