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This patch contains the minimal changes required to support imx6sx OPP of 198 Mhz. Without this patch cpufreq still reports success but the frequency is not changed, the "arm" clock will still be at 396000000 in clk_summary. In order to do this PLL1 needs to be still kept enabled while changing the ARM clock. This is a hardware requirement: when ARM_PODF is changed in CCM we need to check the busy bit of CCM_CDHIPR bit 16 arm_podf_busy, and this bit is sync with PLL1 clock, so if PLL1 NOT enabled, this bit will never get clear. Keep pll1_sys explicitly enabled until after the rate is change to deal with this. Otherwise from the clk framework perspective pll1_sys is unused and gets turned off. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.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.