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drivers: usb: fsl: Workaround for USB erratum-A005275

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Incoming packets in high speed are randomly corrupted by h/w
resulting in multiple errors. This workaround makes FS as
default mode in all affected socs by disabling HS chirp
signalling.This errata does not affect FS and LS mode.

Forces all HS devices to connect in FS mode for all socs
affected by this erratum:
P3041 and P2041 rev 1.0 and 1.1
P5020 and P5010 rev 1.0 and 2.0
P5040, P1010 and T4240 rev 1.0

Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com>
Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nikhil Badola 2015-08-06 14:51:27 +05:30 • committed by Greg Kroah-Hartman
parent d50f14805e
commit f8786a9154
5 changed files with 28 additions and 0 deletions
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1
include/linux/fsl_devices.h
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@ -99,6 +99,7 @@ struct fsl_usb2_platform_data {
unsigned suspended:1;
unsigned already_suspended:1;
unsigned has_fsl_erratum_a007792:1;
unsigned has_fsl_erratum_a005275:1;
unsigned check_phy_clk_valid:1;
/* register save area for suspend/resume */