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| Filename | Latest commit message | Latest commit date |
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36914111e6
Some quirky UDCs (like dwc3 on Exynos) need to have their phys calibrated e.g. for using super speed. This patch adds a new phy_calibrate() method. When the calibration should be used is dependent on actual chip. In case of dwc3 on Exynos the calibration must happen after usb_add_hcd() (while in host mode), because certain phy parameters like Tx LOS levels and boost levels need to be calibrated further post initialization of xHCI controller, to get SuperSpeed operations working. But an hcd must be prepared first in order to pass it to usb_add_hcd(), so, in particular, dwc3 registers must be available first, and in order for the latter to happen the phys must be initialized. This poses a chicken and egg problem if the calibration were to be performed in phy_init(). To break the circular dependency a separate method is added which can be called at a desired moment after phy intialization. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.