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Some SoCs do not support clk delays for MMC in the clock control unit. These include the old controllers in A10/A10s/A13/R8, and the new eMMC controller in A64. The config structure for these controllers do not specify clk_delays, but the check for this was replaced in change "mmc: sunxi: Support controllers that can use both old and new timings". This patch adds back the check for clk_delays, and also adds comments for both checks in sunxi_mmc_clk_set_phase(). Signed-off-by: Chen-Yu Tsai <wens@csie.org> Tested-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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.