[ARM] Orion: add the option to support different ehci phy initialization

The Orion ehci driver serves the Orion, kirkwood and DD Soc families.
Since each of those integrate a different USB phy we should have the
ability to use few initialization sequences or to leave the boot loader
phy settings as is.

Signed-off-by: Ronen Shitrit <rshitrit@marvell.com>

5 files changed, 25 insertions, 3 deletions

diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index 0bb1fbd84ccb..b5c684d96e4e 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -57,6 +57,7 @@ void __init kirkwood_map_io(void)
  ****************************************************************************/
 static struct orion_ehci_data kirkwood_ehci_data = {
         .dram           = &kirkwood_mbus_dram_info,
+        .phy_version    = EHCI_PHY_NA,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;
diff --git a/arch/arm/mach-mv78xx0/common.c b/arch/arm/mach-mv78xx0/common.c
index 238a2f8c2d52..b0e4e0d8f506 100644
--- a/arch/arm/mach-mv78xx0/common.c
+++ b/arch/arm/mach-mv78xx0/common.c
@@ -167,6 +167,7 @@ void __init mv78xx0_map_io(void)
  ****************************************************************************/
 static struct orion_ehci_data mv78xx0_ehci_data = {
         .dram           = &mv78xx0_mbus_dram_info,
+        .phy_version    = EHCI_PHY_NA,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;
diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
index 437065c25c9c..0a623379789f 100644
--- a/arch/arm/mach-orion5x/common.c
+++ b/arch/arm/mach-orion5x/common.c
@@ -72,6 +72,7 @@ void __init orion5x_map_io(void)
  ****************************************************************************/
 static struct orion_ehci_data orion5x_ehci_data = {
         .dram           = &orion5x_mbus_dram_info,
+        .phy_version    = EHCI_PHY_ORION,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;
diff --git a/arch/arm/plat-orion/include/plat/ehci-orion.h b/arch/arm/plat-orion/include/plat/ehci-orion.h
index 64343051095a..4ec668e77460 100644
--- a/arch/arm/plat-orion/include/plat/ehci-orion.h
+++ b/arch/arm/plat-orion/include/plat/ehci-orion.h
@@ -11,8 +11,16 @@
 
 #include <linux/mbus.h>
 
+enum orion_ehci_phy_ver {
+        EHCI_PHY_ORION,
+        EHCI_PHY_DD,
+        EHCI_PHY_KW,
+        EHCI_PHY_NA,
+};
+
 struct orion_ehci_data {
         struct mbus_dram_target_info    *dram;
+        enum orion_ehci_phy_ver phy_version;
 };
 
 
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 5416cf969005..9d487908012e 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -33,8 +33,9 @@
 /*
  * Implement Orion USB controller specification guidelines
  */
-static void orion_usb_setup(struct usb_hcd *hcd)
+static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
 {
+        /* The below GLs are according to the Orion Errata document */
         /*
          * Clear interrupt cause and mask
          */
@@ -258,9 +259,19 @@ static int __init ehci_orion_drv_probe(struct platform_device *pdev)
                 ehci_orion_conf_mbus_windows(hcd, pd->dram);
 
         /*
-         * setup Orion USB controller
+         * setup Orion USB controller.
          */
-        orion_usb_setup(hcd);
+        switch (pd->phy_version) {
+        case EHCI_PHY_NA:       /* dont change USB phy settings */
+                break;
+        case EHCI_PHY_ORION:
+                orion_usb_phy_v1_setup(hcd);
+                break;
+        case EHCI_PHY_DD:
+        case EHCI_PHY_KW:
+        default:
+                printk(KERN_WARNING "Orion ehci -USB phy version isn't supported.\n");
+        }
 
         err = usb_add_hcd(hcd, irq, IRQF_SHARED | IRQF_DISABLED);
         if (err)