From 944a4894c047f9fc17d21f1e4ca92d5909b8405b Mon Sep 17 00:00:00 2001
From: Ajay Kumar Gupta <ajay.gupta@ti.com>
Date: Thu, 10 Jun 2010 11:20:50 +0530
Subject: [PATCH] musb: Program extvbus for OMAP3EVM Rev >= E
OMAP3EVM Rev >=E uses external Vbus supply so setting 'extvbus'
to '1' for OMAP3EVM Rev >=E runtime based on EVM revision.
CC: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
---
board/ti/evm/evm.c | 13 +++++++++++++
drivers/usb/musb/omap3.c | 3 +++
drivers/usb/musb/omap3.h | 4 ++++
3 files changed, 20 insertions(+)
diff --git a/board/ti/evm/evm.c b/board/ti/evm/evm.c
index fcc1803bcd..9948b9cd30 100644
--- a/board/ti/evm/evm.c
+++ b/board/ti/evm/evm.c
@@ -64,6 +64,19 @@ static void omap3_evm_get_revision(void)
}
}
+/*
+ * MUSB port on OMAP3EVM Rev >= E requires extvbus programming.
+ */
+u8 omap3_evm_need_extvbus(void)
+{
+ u8 retval = 0;
+
+ if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2)
+ retval = 1;
+
+ return retval;
+}
+
/*
* Routine: board_init
* Description: Early hardware init.
diff --git a/drivers/usb/musb/omap3.c b/drivers/usb/musb/omap3.c
index 785629cb7b..a983552357 100644
--- a/drivers/usb/musb/omap3.c
+++ b/drivers/usb/musb/omap3.c
@@ -119,6 +119,9 @@ int musb_platform_init(void)
stdby &= ~OMAP3_OTG_FORCESTDBY_STANDBY;
writel(stdby, &otg->forcestdby);
+#ifdef CONFIG_OMAP3_EVM
+ musb_cfg.extvbus = omap3_evm_need_extvbus();
+#endif
platform_needs_initialization = 0;
}
diff --git a/drivers/usb/musb/omap3.h b/drivers/usb/musb/omap3.h
index b591862b2d..c934e0cadd 100644
--- a/drivers/usb/musb/omap3.h
+++ b/drivers/usb/musb/omap3.h
@@ -44,4 +44,8 @@
int musb_platform_init(void);
+#ifdef CONFIG_OMAP3_EVM
+extern u8 omap3_evm_use_extvbus(void);
+#endif
+
#endif /* _MUSB_OMAP3_H */
--
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