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Main-line Linux kernel tree
http://www.kernel.org
20567be9d2
The device tree binding for the SDHCI controller found on Tegra SoCs specifies that a reset control can be provided by the device tree. No code was ever added to support the module reset, which can cause the driver to try and access registers from a module that's in reset. On most Tegra SoC generations doing so would cause a hang. Note that it's unlikely to see this happen because on most platforms these resets will have been deasserted by the bootloader. However the portability can be improved by making sure the driver deasserts the reset before accessing any registers. Since resets are synchronous on Tegra SoCs, the platform driver needs to implement a custom ->remove() callback now to make sure the clock is disabled after the reset is asserted. Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
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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.