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fsl/usb: Workaround for USB erratum-A007075

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Put a delay of 5 millisecond after reset so that ULPI phy
gets enough time to come out of reset. Erratum A007075 applies
to following SOCs and their variants, if any
        P1010 rev 1.0
        B4860 rev 1.0, 2.0
        P4080 rev 2.0, 3.0

Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
This commit is contained in:
Nikhil Badola
2014-02-26 17:43:15 +05:30
committed by York Sun
parent c60dee03c0
commit 11856919f2
4 changed files with 33 additions and 0 deletions
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16
arch/powerpc/include/asm/fsl_errata.h
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@ -60,4 +60,20 @@ static inline bool has_erratum_a006261(void)
}
#endif
static inline bool has_erratum_a007075(void)
{
u32 svr = get_svr();
u32 soc = SVR_SOC_VER(svr);
switch (soc) {
case SVR_B4860:
case SVR_B4420:
return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 2, 0);
case SVR_P1010:
return IS_SVR_REV(svr, 1, 0);
case SVR_P4080:
return IS_SVR_REV(svr, 2, 0) || IS_SVR_REV(svr, 3, 0);
}
return false;
}
#endif