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370d919271
AHB BIST gate is actually controlled with bit 7.
This bug was detected while trying to use the NAND controller which is
using the DMA engine to transfer data to the NAND.
Since the ahb_bist_clk gate bit conflicts with the ahb_dma_clk gate bit,
the core was disabling the DMA engine clock as part of its 'disable
unused clks' procedure, which was causing all DMA transfers to fail after
this point.
Fixes: 5e73761786 ("clk: sunxi-ng: Add sun5i CCU driver")
Cc: stable@vger.kernel.org
Reported-by: Angus Ainslie <angus@akkea.ca>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Angus Ainslie <angus@akkea.ca>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1495643669-28221-1-git-send-email-boris.brezillon@free-electrons.com
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.