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The usb3tousb2_en BIT will be clear to 0 in probe(), it make USB controller work at USB3 mode, and if the USB phy is turned on with DP only mode(4 lanes DP), the rockchip_usb3_phy_power_on() will return directly, so usb3_host_disable and usb3_host_port these 2 BIT will keep a same value as coreboot. In coreboot, these 3 BITs are set as USB2 mode, but now one of the bits is changed to USB3, it make USB controller work at a unknown status. These 3 BITs should be changed to USB2, if the Type-C works at 4 lanes mode, and then switch it back to USB3 mode, when USB disconnect. Signed-off-by: Chris Zhong <zyw@rock-chips.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> 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.