diff options
| author | Suresh Gupta <suresh.gupta@freescale.com> | 2014-02-26 14:29:12 +0530 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-03-07 14:52:16 -0800 |
| commit | 9c641a872aa54edc97d69281f705819e96a5c90e (patch) | |
| tree | 11db11fdabd9982050f247542e3bbb6c74cc1249 /arch/powerpc/include/asm/fsl_errata.h | |
| parent | 7af9a07403e80415d097b4175616c7a7686b7deb (diff) | |
powerpc/usb: Workaround for erratum-A006261
USB spec says that the minimum disconnect threshold should be
over 525 mV. However, internal USB PHY threshold value is below
this specified value. Due to this some devices disconnect at
run-time. Hence, phy settings are tweaked to increased disconnect
threshold to be above 525mV by using this workaround.
Signed-off-by: Suresh Gupta <suresh.gupta@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/include/asm/fsl_errata.h')
| -rw-r--r-- | arch/powerpc/include/asm/fsl_errata.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/fsl_errata.h b/arch/powerpc/include/asm/fsl_errata.h index a59091977ef..c9982cc8ec4 100644 --- a/arch/powerpc/include/asm/fsl_errata.h +++ b/arch/powerpc/include/asm/fsl_errata.h @@ -26,4 +26,38 @@ static inline bool has_erratum_a006379(void) } #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_A006261 +static inline bool has_erratum_a006261(void) +{ + u32 svr = get_svr(); + u32 soc = SVR_SOC_VER(svr); + + switch (soc) { + case SVR_P1010: + return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 2, 0); + case SVR_P2041: + case SVR_P2040: + return IS_SVR_REV(svr, 1, 0) || + IS_SVR_REV(svr, 1, 1) || IS_SVR_REV(svr, 2, 1); + case SVR_P3041: + return IS_SVR_REV(svr, 1, 0) || + IS_SVR_REV(svr, 1, 1) || + IS_SVR_REV(svr, 2, 0) || IS_SVR_REV(svr, 2, 1); + case SVR_P5010: + case SVR_P5020: + case SVR_P5021: + return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 2, 0); + case SVR_T4240: + case SVR_T4160: + return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 2, 0); + case SVR_T1040: + return IS_SVR_REV(svr, 1, 0); + case SVR_P5040: + return IS_SVR_REV(svr, 1, 0); + } + + return false; +} +#endif + #endif |