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At imx7ulp, the USB related analog register is located in PHY register
region too, so we need to control PLL at PHY driver directly.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
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add compatible string "fsl,imx6ul-usbphy"
Signed-off-by: Peter Chen <peter.chen@freescale.com>
(cherry picked from commit 45583aa93ee7d3f8e930854603121f7facdcffb9)
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Add tx-d-cal property
Signed-off-by: Peter Chen <peter.chen@freescale.com>
(cherry picked from commit ebb97b3d3ca99516d3daac09813ae480de2adffe)
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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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Move USB PHY bindings under usb directory to phy directory which already
contains other USB PHY bindings.
The Samsung USB PHY binding is obsolete and can be removed.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
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