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The current default of 20ms cause some devices, which are slow to initialize, to not show up during the bus scanning. Change this to the PCIe spec mandated 100ms and document this in the DT binding. From PCIe base spec rev 3.0, chapter "6.6.1. Conventional Reset": To allow components to perform internal initialization, system software must wait a specified minimum period following the end of a Conventional Reset of one or more devices before it is permitted to issue Configuration Requests to those devices. With a Downstream Port that does not support Link speeds greater than 5.0 GT/s, software must wait a minimum of 100 ms before sending a Configuration Request to the device immediately below that Port. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Jason Cooper <jason@lakedaemon.net> |
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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.