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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>
This commit is contained in:
Ajay Kumar Gupta 2010-06-10 11:20:50 +05:30 committed by Remy Bohmer
parent b5abf644aa
commit 944a4894c0
3 changed files with 20 additions and 0 deletions
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13
board/ti/evm/evm.c
View File

@ -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 * Routine: board_init
* Description: Early hardware init. * Description: Early hardware init.

3
drivers/usb/musb/omap3.c
View File

@ -119,6 +119,9 @@ int musb_platform_init(void)
stdby &= ~OMAP3_OTG_FORCESTDBY_STANDBY; stdby &= ~OMAP3_OTG_FORCESTDBY_STANDBY;
writel(stdby, &otg->forcestdby); writel(stdby, &otg->forcestdby);
#ifdef CONFIG_OMAP3_EVM
musb_cfg.extvbus = omap3_evm_need_extvbus();
#endif
platform_needs_initialization = 0; platform_needs_initialization = 0;
} }

4
drivers/usb/musb/omap3.h
View File

@ -44,4 +44,8 @@
int musb_platform_init(void); int musb_platform_init(void);
#ifdef CONFIG_OMAP3_EVM
extern u8 omap3_evm_use_extvbus(void);
#endif
#endif /* _MUSB_OMAP3_H */ #endif /* _MUSB_OMAP3_H */