Linux kernel for uConsole
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67e830aef3
The QPIC NAND BAM has multiple flags to control the transfer. This patch adds flags parameter in register and data transfer DMA helper functions and modifies all these functions call with appropriate flags using following rule 1. Read and write can’t go in single command descriptor so separate SGL should be used. 2. For some of the requests, NWD flag should be set in BAM DMA descriptor. 3. For Data write, the BAM has internal buffer for each codeword. All write request will modify the data in internal buffer and this buffer will be flushed to NAND device once EOT flag is set. So for all the write requests in single codeword, the EOT should be cleared for all tx data descriptors except the last one. Reviewed-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Abhishek Sahu <absahu@codeaurora.org> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.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.