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| Filename | Latest commit message | Latest commit date |
|---|---|---|
7f3ff14b7e
sdma_disable_channel() cannot ensure dma is stopped to access module's FIFOs. There is chance SDMA core is running and accessing BD when disable of corresponding channel, this may cause sometimes even after call of .sdma_disable_channel(), SDMA core still be running and accessing module's FIFOs. According to NXP R&D team a delay of one BD SDMA cost time (maximum is 1ms) should be added after disable of the channel bit, to ensure SDMA core has really been stopped after SDMA clients call .device_terminate_all. This patch introduces adds a new function sdma_disable_channel_with_delay() which simply adds 1ms delay after call sdma_disable_channel(), and set it as .device_terminate_all. Signed-off-by: Jiada Wang <jiada_wang@mentor.com> Signed-off-by: Vinod Koul <vinod.koul@intel.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.