[U-Boot] [RFC PATCH 2/2] ARM: omap5_uevm: Example usage of alternative HSIC USB device reset

[Lubomir Popov <lpopov@mm-sol.com>]

This patch demonstrates the usage of the alternative method for HSIC
devices reset (via the ehci-hcd and omap-ehci drivers, where this
method is implemented through a separate patch; must be applied prior
to this one). Board functionality is not altered; a minor improvement
is the removal of the second call to omap_ehci_hcd_init() after reset
which is not needed anymore.

On some other OMAP4/5 boards however this is the only method that
works.

Signed-off-by: Lubomir Popov <l-popov@ti.com>
---
 board/ti/omap5_uevm/evm.c    |    2 ++
 include/configs/omap5_uevm.h |   13 ++++++++++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/board/ti/omap5_uevm/evm.c b/board/ti/omap5_uevm/evm.c
index af854da..cae9fd8 100644
--- a/board/ti/omap5_uevm/evm.c
+++ b/board/ti/omap5_uevm/evm.c
@@ -210,6 +210,7 @@ int ehci_hcd_stop(void)
 	return ret;
 }

+#if !defined(CONFIG_OMAP_HSIC_PORT3_RESET_GPIO)
 void usb_hub_reset_devices(int port)
 {
 	/* The LAN9730 needs to be reset after the port power has been set. */
@@ -220,6 +221,7 @@ void usb_hub_reset_devices(int port)
 	}
 }
 #endif
+#endif

 #ifdef CONFIG_USB_XHCI_OMAP
 /**
diff --git a/include/configs/omap5_uevm.h b/include/configs/omap5_uevm.h
index 2f128b8..96b5f23 100644
--- a/include/configs/omap5_uevm.h
+++ b/include/configs/omap5_uevm.h
@@ -50,10 +50,17 @@
 #define CONFIG_USB_EHCI_OMAP
 #define CONFIG_USB_STORAGE
 #define CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS 3
-#define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+/*#define CONFIG_EHCI_HCD_INIT_AFTER_RESET*/

-#define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO 80
-#define CONFIG_OMAP_EHCI_PHY3_RESET_GPIO 79
+/* No ULPI PHYs on this board */
+/*#define CONFIG_OMAP_EHCI_PHY2_RESET_GPIO 80*/
+/*#define CONFIG_OMAP_EHCI_PHY3_RESET_GPIO 79*/
+/*
+ * Due to HSIC connect ussues with some devices, a reset is required
+ * upon applying port power. A GPIO is needed per HSIC device:
+ */
+#define CONFIG_OMAP_HSIC_PORT2_RESET_GPIO	80	/* Hub */
+#define CONFIG_OMAP_HSIC_PORT3_RESET_GPIO	79	/* Ethernet Ctrlr */

 /* Enabled commands */
 #define CONFIG_CMD_DHCP		/* DHCP Support			*/
-- 
1.7.9.5