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The TX settings can be calibrated for particular hardware. The phy is reset by Linux, so this cannot be handled by the bootloader. The TRM mentions that the maximum resistance should be used for the DN/DP calibration in order to pass USB certification. The values for the TX registers are poorly described in the TRM. The meanings of the register values were taken from another NXP-provided document: https://community.nxp.com/message/566147#comment-566912 Acked-by: Peter Chen <peter.chen@nxp.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jaret Cantu <jaret.cantu@timesys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| of.c | ||
| phy-ab8500-usb.c | ||
| phy-am335x-control.c | ||
| phy-am335x-control.h | ||
| phy-am335x.c | ||
| phy-fsl-usb.c | ||
| phy-fsl-usb.h | ||
| phy-generic.c | ||
| phy-generic.h | ||
| phy-gpio-vbus-usb.c | ||
| phy-isp1301-omap.c | ||
| phy-isp1301.c | ||
| phy-keystone.c | ||
| phy-msm-usb.c | ||
| phy-mv-usb.c | ||
| phy-mv-usb.h | ||
| phy-mxs-usb.c | ||
| phy-omap-otg.c | ||
| phy-qcom-8x16-usb.c | ||
| phy-tahvo.c | ||
| phy-tegra-usb.c | ||
| phy-twl6030-usb.c | ||
| phy-ulpi-viewport.c | ||
| phy-ulpi.c | ||
| phy.c | ||