diff options
| author | Peter Chen <peter.chen@freescale.com> | 2014-01-10 00:51:27 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-13 18:55:19 -0500 |
| commit | ed8f8318d2ef3e5f9e4ddf79349508c116b68d7f (patch) | |
| tree | fc8309d0c9eb301472c321c3eb339e49ccc72f65 /include/linux/usb | |
| parent | feffe09f510c475df082546815f9e4a573f6a233 (diff) | |
usb: chipidea: add freescale imx28 special write register method
According to Freescale imx28 Errata, "ENGR119653 USB: ARM to USB
register error issue", All USB register write operations must
use the ARM SWP instruction. So, we implement special hw_write
and hw_test_and_clear for imx28.
Discussion for it at below:
http://marc.info/?l=linux-usb&m=137996395529294&w=2
This patch is needed for stable tree 3.11+.
Cc: stable@vger.kernel.org
Cc: robert.hodaszi@digi.com
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/chipidea.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h index 7d399671a566..708bd119627f 100644 --- a/include/linux/usb/chipidea.h +++ b/include/linux/usb/chipidea.h | |||
| @@ -24,6 +24,7 @@ struct ci_hdrc_platform_data { | |||
| 24 | * but otg is not supported (no register otgsc). | 24 | * but otg is not supported (no register otgsc). |
| 25 | */ | 25 | */ |
| 26 | #define CI_HDRC_DUAL_ROLE_NOT_OTG BIT(4) | 26 | #define CI_HDRC_DUAL_ROLE_NOT_OTG BIT(4) |
| 27 | #define CI_HDRC_IMX28_WRITE_FIX BIT(5) | ||
| 27 | enum usb_dr_mode dr_mode; | 28 | enum usb_dr_mode dr_mode; |
| 28 | #define CI_HDRC_CONTROLLER_RESET_EVENT 0 | 29 | #define CI_HDRC_CONTROLLER_RESET_EVENT 0 |
| 29 | #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1 | 30 | #define CI_HDRC_CONTROLLER_STOPPED_EVENT 1 |