diff options
| author | Nikhil Badola | 2014-11-21 17:25:21 +0530 |
|---|---|---|
| committer | York Sun | 2015-05-04 09:23:50 -0700 |
| commit | 0dc78ff857337a82d39d7e4390e317ffbc93097f (patch) | |
| tree | d584241cdf4866dadf0659d1fdb073e82b00279e /arch/powerpc/cpu | |
| parent | 7fc63cca611b9d2b5f170f9f37e6f99ddf5992a9 (diff) | |
drivers: usb: fsl: Workaround for Erratum A004477
Add a delay of 1 microsecond before issuing soft reset to the
controller to let ongoing ULPI transaction complete.
This prevents corruption of ULPI Function Control Register which
eventually prevents phy clock from entering to low power mode
Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/cpu')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/cmd_errata.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c index 2d5ddf012b6..b368562a245 100644 --- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c +++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c @@ -299,6 +299,10 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (has_erratum_a007798()) puts("Work-around for Erratum A007798 enabled\n"); #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_A004477 + if (has_erratum_a004477()) + puts("Work-around for Erratum A004477 enabled\n"); +#endif #ifdef CONFIG_SYS_FSL_ERRATUM_I2C_A004447 if ((SVR_SOC_VER(svr) == SVR_8548 && IS_SVR_REV(svr, 3, 1)) || (SVR_REV(svr) <= CONFIG_SYS_FSL_A004447_SVR_REV)) |